Certified Members

NALMS Certified Lake Managers (CLMs) manage lakes, ponds, reservoirs and other bodies of water. CLMs make decisions that affect the quality and use of these water bodies. NALMS Certified Lake Professionals (CLPs), on the other hand, provide vital data used to make decisions that affect the quality and use of a water body. Our certified members are leaders in their fields who have reached the very pinnacle of professional development in lake management; their depth of knowledge is unparalleled.

This listing of our active certified members – both managers and professionals – is sorted alphabetically by state or province.

Click the letter of the state or province you’d like to search below:

A     B     C     D     F     G     H     I     K     M     N     O     P     R     S     T     W


Rick Amalfi, CLM
Aquatic Consulting & Testing, Inc.

Scott Bryan, CLM
Central Arizona Project

Scott is the Biology and Water Quality Administrator for Central Arizona Project (CAP), the water conveyance system that delivers Colorado River water to over 5 million residents in Central and Southern Arizona. He holds a B.S. degree in Environmental Biology from Eastern Illinois University and an M.S. degree in Fisheries Management from South Dakota State University. He started his career as a research biologist for the Arizona Game and Fish Department, primarily focusing on fisheries and aquatic systems. After nearly 10 years with Game and Fish, Scott moved into the private sector and served as the Vice-President of Operations for Aquatic Consultants, Inc. in Albuquerque, NM. In that role, he was involved in nearly every aspect of the business, including the design, construction, and management of recreational and private lakes and streams. In his current position with CAP, Scott develops and executes targeted research for a variety of aquatic and terrestrial issues that impact the CAP system, and he administers the water quality program for the organization.

Douglas Crowl, CLM
Aquatic Consulting & Testing, Inc.

Doug Crowl received his B.A in Environmental science/Biology from Mansfield University of Pennsylvania in 1995. Doug has since then been working at Aquatic Consulting and Testing in Tempe, Arizona. He has over 20 years of experience with algae identification, mosquito identification, weed, and algae treatments, clam/snail treatments and golden algae monitoring/identification. Doug has been a NALMS member since 2018. He currently is a qualifying party for aquatics in Arizona and he also holds grade 4 certifications in drinking water treatment and distribution. In his free time, he enjoys spending time with his family and friends rooting for his Arizona teams.


Brad Hufhines, CLM
Beaver Water District

Bradley Hufhines has 14 years of experience in the water resources field and has been a member of NALMS since 2008. Brad’s formal education includes a Bachelor of Science in Animal Science and Master’s of Science in Environmental Science degrees from the University of Arkansas. Brad is employed at Beaver Water District, the second largest drinking water provider in Arkansas. Beaver Lake, Beaver Water District’s source of raw water, is a multi-purpose reservoir in Northwest Arkansas and is the source of drinking water for over 420,000 Arkansans. Brad blends research, community outreach and education, and project management at Beaver Water District for the protection and monitoring of Beaver Lake. Besides being a CLM, Brad holds Wastewater Treatment, Industrial Wastewater Treatment, Water Treatment, and Water Distribution licenses. Some of Brad’s projects include the Northwest Arkansas Rain Garden Project, tall grass prairie restoration, net-nutrient retention study, and watershed-wide bioassessments. Brad is an outdoorsman who feels blessed to be in a career that serves others and helps to protect natural resources.

Marson Nance, CLM
Northwest Arkansas Land Trust

Marson Nance is Director of Land Protection and Stewardship for Northwest Arkansas Land Trust.  Marson works to permanently conserve critical lands with focus on the Illinois River and Beaver Lake watersheds for ecological and source water protection. Marson has worked as Senior Environmental Specialist and Lake Manager for Orange County, Florida and as an environmental biologist on projects for governments and private-sector clients throughout the Southeast and Desert Southwest.  Marson has 10 years of experience in environmental compliance, threatened and endangered species protection, and management of terrestrial and aquatic habitats.


British Columbia (Canada)

Jesse Montgomery, CLM
Metro Vancouver

Jesse is a biologist working in operations including water supply reservoirs for Metro Vancouver.





Calgary (Canada)

Alan Sosiak, CLM


James Bellis, CLM
Big Bear Municipal Water District

James Bellis began his education at California State Polytechnic University, where he received a Bachelor of Science in Urban and Regional Planning and a Master of Science in Regenerative Studies and Sustainable Design. James also received an ESRI Certification in Geographic Information Systems from San Bernardino Valley College. Growing up in Lake Arrowhead, camping throughout the Western US, and surfing all over the west coast contributed to his love and respect of water at an early age. He is fluent in Spanish and is an avid snow skier. However, he usually dedicates most of his free time to playing in numerous bands. James studied electric bass under the instruction of Tom Fowler (Frank Zappa, Ray Charles). James’ previous employment included the City of Rialto Development Services Department and the Arrowhead Lake Association Lake Management Department. Currently, James is the Lake Manager at the Big Bear Municipal Water District in Big Bear Lake, CA.

Benjamin Chen, CLP
BlueGreen Water Technologies

Benjamin Chen, CLP, has over a decade of providing professional aquatic services. Spurred by a passion for the outdoors and fishing in his home state of Wisconsin, Ben completed his B.S. in Fisheries Management from the University of Minnesota. Afterwards, Ben worked in the fish culture industry in Australia and Alaska and developed skills in maintaining water quality and keeping fish happy. Since then, he has settled in California and began his Lake Management career in Southern California before moving to the San Francisco Bay Area where he currently practices and resides. Today, Ben works for BlueGreen Water Technologies, a leading global WaterTech company that provides innovative, scalable solutions to toxic algal blooms for all bodies of water, irrespective of size or shape. 

Through his career, he has provided private and public entities a myriad of various professional aquatic services, including: nutrient management, algae control, midge & mosquito control, lake biology, fisheries management, integrated pest management, bathymetry & sediment analysis, water quality monitoring and aquatic pesticide applications.

Angela De Palma-Dow, CLM
County of Lake Water Resources – Lakeport, CA

Angela is a Program Coordinator in the County of Lake Water Resources Department where she coordinates and manages various programs such as aquatic plant management, quagga/zebra mussel prevention, MS4 /TMDL/ stormwater, surface-water quality monitoring, cyanobacteria outreach, water resources data management, and post-fire water quality monitoring.  Angela has a BS in Biological Science and Chemistry minor from California State University, Sacramento, and an MS in Fisheries and Wildlife with a Limnology emphasis from Michigan State University. Angela has conducted aquatic surveys and monitoring in over six states and has worked with and for multiple universities, federal, state, and city agencies, tribes and non-profits. Angela is passionate about science communication and providing water science outreach and education to policymakers and the public. Angela has swum from Alcatraz Island twice and has two cats.

Tyler Fowler, CLM
Aqua Terra

Tyler works with Aqua Terra, LLC. an all-inclusive aquatic management company located in the San Francisco Bay Area. Tyler earned an undergraduate degree in Environmental Studies at San Francisco State University in 2005 with a minor in Geography. Tyler entered the field of Lake Management in 2007 and has been managing lake, reservoir and lagoon systems for over fifteen years. Tyler specializes in developing and implementing lake, lagoon, reservoir, and canal management programs as well as providing regulatory compliance and permitting for various private clients and municipalities throughout the Western United States. Tyler is also a licensed applicator in California, Nevada and Oregon.


Eli Kersh, CLM
LakeTech, Inc.

Eli spent many years working in and traveling to remote wilderness areas as a fishing or kayaking guide. Through these and other experiences he developed knowledge and skills that led him to seek an academic path geared towards the Outdoors. He received his undergraduate degree from UC Santa Barbara in 2007 where he majored in Geography. After several years working as an independent GIS analyst for Fire & Police Departments, Indian Tribes, and other agencies, he returned to school in 2011 to obtain a masters degree in Geography with an emphasis in Lake Management. Combing his education, skills, and experiences, he is now the Environmental Service Manager at a professional lake management company in the San Francisco Bay Area and works as a private consultant providing training and education to private and government groups throughout California.

Stephen McCord, CLM
McCord Environmental, Inc.
sam@mccenv.com / 530-220-3165

STEPHEN MCCORD, Ph.D., P.E., is President of McCord Environmental, Inc. He holds a B.S. degree in Civil Engineering from Clemson University, and an M.S. and Ph.D. degrees in Civil & Environmental Engineering from the University of California Davis. As a registered Professional Engineer in the State of California, Dr. McCord has over 20 years of consulting, research and teaching experience in the environmental engineering field with projects throughout California, several other US states, and internationally. He has managed water quality field studies and improvement projects in rivers, lakes, wetlands, deltas, and bays throughout California. He is past President of the California Lake Management Society and works on lakes to address mercury bioaccumulation, eutrophication and drinking water quality concerns.

Terry McNabb, CLM

Terry McNabb is a graduate of Michigan State University with a degree in Water Resource Management and operates Aquatechnex, LLC.  Aquatechnex LLC is a full service lake and aquatic plant management firm that operates from offices in California, Oregon, Washington, Idaho and Montana. The firm has a recognized expertise in the restoration of lake and river systems impacted by invasive aquatic weeds and management of Harmful Algae Blooms. Terry has been involved in lake management for over 40 years. He is a past president of the Aquatic Plant Management Society, the North American Lake Management Society and the Western Aquatic Plant Management Society. He is a recipient of the US Asia Environmental Partnership grant to work with lake restoration activities in Malaysia and Indonesia. He is a cooperator with the US Army Corps of Engineers Aquatic Plant Control Research Program and an instructor for the University of California-Davis Aquatic Weed School. 

Ellen P. Preece, Ph.D., CLM
Robertson-Bryan, Inc.

Ellen Preece is a senior limnologist at Robertson-Bryan, Inc. in Rancho Cordova, California. Dr. Preece received her B.S. from the University of New Hampshire in environmental resource economics. After several years working for the U.S. Forest Service and U.S. Geological Survey as a water quality technician she returned to Washington State University where she earned her M.S. and Ph.D. in environmental and natural resource sciences (limnology). Dr. Preece has over 15 years of consulting and research experience addressing water quality issues in California and beyond. Much of her work has focused on working with stakeholders including federal and state agencies, tribes, non-profits and universities to develop and implement mitigation and management plans to prevent the formation of cyanobacteria harmful algal blooms. Through this work she has also actively developed occupational risk assessments for people that have to work in and around waters that contain cyanotoxins. Dr. Preece has been a member of NALMS since 2008 and served as the region 9 director for NALMS from 2016 to 2019.

Mark Seelos, CLM
Valley Water, San Jose, CA

Mark Seelos is a limnologist with expertise in nutrient and mercury management in aquatic environments. At Valley Water, he manages technical studies and surface water quality improvement projects. Mark has a Bachelor of Science in Environmental Geology from the University of California, Santa Cruz, and is currently pursuing a Ph.D. in Environmental Systems at the University of California, Merced where he is studying mercury control in California reservoirs. He has served on the board of the California Lake Management Society since 2018.


Patrick Simmsgeiger, CLM
Diversified Waterscapes

Founder and President of DWI, Patrick is a Licensed Aquatic Pesticide Applicator, Landscape Contractor and a NALMS Certified Lake Manager since 1999. He is one of the few individuals in the industry that is an expert in all stages of aquatic treatment, from product development and manufacturing to application and treatment with over 40 years of experience throughout California, the US, and internationally.

He specializes in watershed and water quality management in lakes and reservoirs. Patrick is the only applicator that also manufactures an EPA-registered chelated copper algaecide, that is 100% natural and organic, which has been around since the 1970’s. He also manufactures a patented clarifier that has been used successfully nationwide to clear notoriously stubborn water bodies.

Patrick is well known on the speaking circuit with over 100 presentations nationwide, recently having given a presentation at the I.C.A.I.S Conference in Fort Lauderdale and at the California Lake Management Society’s annual Conference in Big Bear, CA.



John Aronson, CLM
AATA International, Inc.

B.S. in Biological Sciences with highest distinction from Nebraska Wesleyan University.  M.S. Zoology/Limnology/Minor Civil Engineering, University of Nebraska-Lincoln.  Postgraduate studies Colorado State University. Senior Ecologist, Ecology Consultants, Inc.; Sr. Aquatic Scientist and Laboratory Director, Environmental Research and Technology, Inc.; Founder and President, Riverside Technology, Inc.; Founder and Director, Aquatic BioSystems, Inc.; Founder and President, Advanced Aquatic Technology Associates, Inc., AATA International, Inc.

John is the author of “Watershed Management in Russia and the Former Soviet Union” IN Reimold, Robert. 1998. McGraw-Hill.  He completed 54 major projects in Russia, Kazakhstan, and the FSU over the past 24 years.  Besides his NALMS membership, John has been an active member of the American Society of Limnology and Oceanography,  North American Diatom Symposium and many other societies.  He created an advanced phycology lab for analysis of diatoms and other phytoplankton and periphyton, and taught Scanning Electron Microscopy at Colorado State University, where he completed post-graduate training in environmental engineering, statistics, and natural sciences.  He is polite in 7 languages and has traveled extensively in nearly 50 countries worldwide.  When asked about his most memorable limnological experience, John indicates that it was seeing Lake Baikal for the first time, (and every time thereafter) on his many trips to Buryatia, Russian Far East.  He has a long history of investigation with the problem diatom, Didymosphenia geminata, which he has studied from Colorado and Russian Federation.

Kelly DiNatale, CLM
DiNatale Water Consultants

Steve Lundt, CLM
Metro Wastewater Reclamation District

Steve Lundt’s love for the outdoors and applied science led him to a B.S. degree from Pacific University (Forest Grove, Oregon) and an M.S. degree in Environmental Science from Indiana University. After acquiring the two-year degree in 1999 and becoming a member of NALMS, Steve traveled back to Oregon and worked on Oswego Lake for three years. While working for the Lake Oswego Corporation, Steve became a Certified Lake Manager and learned how to work for a board of directors. Then in 2002, Steve moved to Denver, Colorado to be a Water Quality Scientist for Metro Wastewater Reclamation District. For the past 15 years, Steve has been a member of CLRMA, chaired the NALMS Lakes Appreciation Month Committee, and has looked after Barr Lake.

Christopher Mikolajczyk, CLM
Princeton Hydro

Christopher Mikolajczyk, CLM, is a senior project manager of aquatics and certified lake manager for Princeton Hydro and conducts the management, oversight, and coordination of aquatic ecology and water resource projects in three main areas: aquatic resource restoration and management, aquatic ecosystem sampling and investigations, and stormwater quality modeling and management.




Trea Nance, CLP
City of Westminster

Trea received her B.S. in Wildlife Ecology and Conservation from the University of Nevada, Reno (2012), where she studied benthic invertebrates in Lake Tahoe.  She received her M.S. in Natural Resources (emphasis: Limnology), from the University of Idaho (2015). Her Master’s Thesis research involved calculating a phosphorus and sediment mass balance for Fernan Lake, a small lake suffering from frequent harmful algal blooms. Throughout her graduate research, she had the opportunity to work closely with landowners, educating them about limnology and gaining insights into the history of Fernan Lake. This led to a passion for public education and presenting data to the public. She is active in the NALMS affiliate, CLRMA (Colorado Lake and Reservoir Management Association), where she serves as Treasurer.

Jillian Taylor, CLP
Metro Wastewater Reclamation District

Jena Vail, CLP
Metro Wastewater Reclamation District, Environmental Services

Jena Vail received her BS in Biology with a Chemistry minor from Colorado State University, where she studied midge flies of Colorado streams. In addition, she was a student with USGS working on the Summitville Gold Mine Superfund site collecting and analyzing water samples. She has over 10 years of experience as a Water Quality Analyst conducting chemical, physical, biological, and bacteriological analyses of raw and treated wastewater, industrial discharges, drinking water, surface, and groundwater. Jena has performed special studies to identify and mitigate non-point source pollutants to a drinking water reservoir in the Denver Metro area. In addition to water quality, Jena has an aptitude in water quantity (accounting) and developing water resources.

Clayton Weese, CLM
Water Resource Specialist
Ute Water Conservancy District

Clayton Weese graduated from Mesa State College with a Bachelor of Science degree in Biology.  He is currently a State of Colorado Certified Class A Water Operator and NALMS Certified Lake Manager.  Clayton has worked in the drinking water industry for almost 18 years now and has held the positions of Water Treatment Plant Operator, Water Quality Analyst, and currently is the Water Resource Specialist for Ute Water Conservancy District in Grand Junction, CO.  In his current position, Clayton samples and manages 23 reservoirs on the Grand Mesa.



Mark June-Wells, CLM
Aquatic Ecosystem Research

Mark obtained his B.S. from Southern Connecticut State University in 2003 and his M.S. from Rutgers University in 2005. In 2010 he completed his Ph.D. in plant community ecology and joined the Connecticut Agricultural Experiment Station’s Invasive Aquatic Plant Program as a post-doctoral scientist. He currently owns Aquatic Ecosystem Research, a freshwater conservation company founded in Connecticut. Additionally, Mark is a NALMS Certified Lake Manager and an ESA Certified Ecologist with OSHA 10, HAZWOPER 24, and CT-state pesticide licenses.


Hillary Kenyon, CLM

Hillary holds a Bachelor of Science degree in Environmental Science from UCONN and a Master of Science degree in Plant and Soil Sciences from UMASS. Her work as a Certified Lake Manager and limnological consultant has allowed her the opportunity to work on lakes across New England and New York. She is committed to interdisciplinary research to better manage widespread lake and reservoir problems related to aquatic invasive species, internal nutrient loading, onsite wastewater treatment, and stormwater.



Kendra Kilson, pCLP
Northeast Aquatic Research

Kendra grew up on Lake Lillinonah, the second largest lake in Connecticut. In 2014, she began volunteering with Friends of the Lake, an organization that strives to protect the lake from eutrophication and aquatic invasive species. It was this experience that fueled her passion for further understanding water quality and preserving lakes and ponds. She received her M.S. in Lake Management from the State University of New York College at Oneonta in 2019. Kendra is currently a research scientist with Northeast Aquatic Research, LLC and is experienced in water quality monitoring and aquatic plant surveying in New England and New York.

George Knoecklein, CLM
Northeast Aquatic Research

Larry Marsicano, CLM
Aquatic Ecosystem Research

Larry obtained his B.A. from Western Connecticut State University in 1988 and his M.A. from Connecticut College in 1993. He managed the Freshwater Ecology Laboratory at Connecticut College for Dr. Peter Siver from 1990 to 1997 which specialized in paleolimnology and regional lake water quality studies. Publications can be viewed at the Silica Secchi Disk website. In 1998 he was hired by the Candlewood Lake Authority and in 2003 became the Executive Director of that public lake management agency on the largest lake in Connecticut.

In 2017 Larry became a Principal Partner at Aquatic Ecosystem Research, LLC. More recent publications he co-authored in the Journal of Lake and Reservoir Management include A laboratory examination of the effectiveness of a winter seasonal lake drawdown to control invasive Eurasian watermilfoil (Myriophyllum spicatum) (2014, 30: 381–392) and Assessment of long-term trends for management of Candlewood Lake, Connecticut, USA (2017, 33: 280-300).

Christopher Mayne, CLM
GZA GeoEnvironmental, Inc.

Chris has over 20 years experience working on lakes, ponds, and reservoirs.  He has worked on various lakes and reservoirs across the country.  He has performed water quality assessments to aid in the protection of source water and to develop restoration strategies for both recreational lakes and drinking water reservoirs.  His work has included in-situ profiling, water chemistry analysis, zooplankton community analysis, algal community analysis, macrophyte identification and mapping, fish community assessments, and GIS evaluations of surrounding watersheds.  He also has assisted lake and reservoir managers address issues associated with algal blooms and invasive aquatic plants.  Chris owned and operated a pond management company for nine years. 

Currently,  Chris is working with GZA GeoEnvironmental as a Project Manager working in both the Ecology Division providing lake and watershed management assistance and in the EHS Compliance Division where he works with industrial, utility, institutional, municipal, and construction sectors with their compliance needs including stormwater and wastewater discharges.

Chris has been a Certified Lake Manager since 2003 and is a NALMS member.  He has also been a long standing board member of the Connecticut Federation of Lakes.



Bruce Richards, CLM


Michael Chimney, CLP
South Florida Water Management District

Jason Danaher, CLM
Lake County Water Authority

Jason is originally from upstate New York and received his bachelor’s degree from the State University of New York at Cobleskill. He earned a master’s degree from Kentucky State University in Aquaculture and Aquatic Sciences and later worked for five-years at the University of the Virgin Islands’ Agriculture Experiment Station on St. Croix. In 2013, Jason earned his Ph.D. in Fisheries and Aquaculture from Auburn University. He worked at Pentair Aquatic Eco-Systems, Inc. for five-years and in 2018 pursued an opportunity with the Lake County Water Authority in Tavares, FL as the Water Resources Manager where he oversees the operation of their Nutrient Reduction Facility.

Amy Giannotti, CLM
AquaSTEM Consulting, LLC

Amy L. Giannotti is the owner of AquaSTEM Consulting, LLC.  Amy holds a B.S. in biology from Marietta College (OH) and earned her M.S. in environmental science at the University of Virginia.  Her current work examines the survival and spread of invasive plant species in freshwater habitats, and specifically considers the effect of urbanization on native plant restoration efforts and water quality.  In addition, Amy serves as editor of the journal Aquatics, the official publication of the Florida Aquatic Plant Management Society, and she serves on the Board of Directors for this organization.  Amy is also an advisor to the University of Florida’s Center for Aquatic and Invasive Plants and has designed curriculum programs for elementary, middle, and high school students highlighting the impacts that exotic plants have on our waterways.  Amy was recently named the Director of Development for Schoolyard Films, a 501c3 not-for-profit organization that produces high-end environmental documentaries for K-12 students to foster environmental stewardship and promote awareness of our natural resources. These natural history programs are available for FREE and come complete with study guides and supplemental materials aligned to state and national science standards.  Amy also serves as past-president of the Cambrian Foundation, a 501c3 not-for-profit organization based in Orlando (FL) that specializes in technical and scientific diving. During her career with the Cambrian Foundation and in conjunction with the Foundation’s research expeditions in Florida, Mexico, and Bermuda, she has initiated many educational and outreach programs, including a variety of projects related to the preservation of cave, karst, and groundwater systems in these regions.

Patrick Goodwin, CLM
Vertex Aquatic Solutions

Patrick Goodwin, CLM, has training and experience in all aspects of water resource management and has completed multiple comprehensive water management plans ranging from 8 to 13,000-acre water bodies. Patrick specializes in using the Lake Loading Response Model (LLRM) and field data collection to evaluate nutrient loading and the consequences of that loading in terms of algal blooms and water clarity. Patrick also has unique industry insight into applied restoration techniques and has conducted numerous experiments evaluating restoration techniques for clients. He has successfully restored multiple water bodies and is considered an expert in oxygenation and circulation techniques. Patrick is a certified lake manager and is the current Region 4 director for the North American Lake Management Society (NALMS). He also serves on the board for the Florida Lake Management Society (FLMS).

Patrick created Good Aquatics in 2021 after spending the prior decade working in the water quality management industry.  Good Aquatics was created with a core belief to provide well-engineered water quality solutions that are backed by science; something that has been lost in the shuffle as the water quality management industry has become more commercialized. Good Aquatics aims to provide technically effective water quality solutions at the lowest possible cost. This is done by collecting the right data (brings direct management utility) to make a management decision. Good Aquatics welcomes scientific evaluation and is transparent with case studies and industry know-how such that water resource managers can make the most informed and best decisions for lake stakeholders. Good Aquatics stands behind its workmanship and technical support.


Mark V. Hoyer, CLM
University of Florida
mvhoyer@ufl.edu / 352 215-0338

Historically (> 35 years), Mark Hoyer’s primary interests lay in defining the relations among nutrients and the ecology of Florida streams, lakes and estuaries. These research interests include algal abundances, aquatic plant, fish and aquatic bird communities. For the same time frame, Mark has worked with Citizen Scientists (Florida LAKEWATCH) both educating them on the functioning of aquatic systems and using them in the collection of data for his research interests. Mark’s current focus is on examining long-term trends in water chemistry of aquatic systems and determining if any significant trends are related to anthropogenic impacts (e.g., land use changes) or long-term climatic cycles related to the Atlantic Multidecadal Oscillation in temperature.

Derek Johnson, CLM
Phoslock Environmental Technologies

Derek Johnson, CLM, is currently the Lead Applications Manager at Phoslock Environmental Technologies Europe.  He holds a B.S. degree in Fisheries Management from Paul Smith’s College in upstate New York, and the first to hold an M.S. degree in Lake Management from SUNY Oneonta, in Oneonta, New York.  Derek has expertise in managing lakes and reservoirs of all sizes in North America and Europe, managing stakeholder needs and expectations, developing lake monitoring plans, and working closely with local/state government agencies.


Melissa Lavigne, CLM
Orange County Environmental Protection Division

For more than 15 years, Melissa Lavigne has worked as an environmental professional focusing on freshwater resources. She studied Limnology as an undergraduate at the University of Central Florida, researched Forest & Fisheries Management in British Columbia, and pursued graduate work in Environmental Science & Engineering at Clarkson University and the University of Florida. Melissa currently serves as the Lake Management Program Supervisor for the Environmental Protection Division in Orange County, Florida. Motivated by aquatic ecosystem function and protection, her career path demonstrates direct experience in aquatic biology, lake management and habitat restoration, surface water quality and the effects of anthropogenic degradation, invasive and exotic aquatic plant control, stormwater pollution prevention and nutrient load reduction, implementation of structural and non-structural BMPs, water quality CIP project management, navigational waterway marker permitting and installation, and special assessment budget management.

Lance Lumbard, CLP

Sam Sardes, CLP
Aquatic Systems Inc.

Sam Sardes received her B.S. from Florida Atlantic University and her M.S. from the University of Florida. The focus of her research has been on aquatic plant and algae management with a primary goal of integration of control methods for more efficient management programs. She has been with Aquatic Systems since 2016 and is currently their weed science director. Her research focuses on plant and algae management along with lake restoration and nutrient mitigation. Her master’s research focused on the interactions of IPM tools (herbicides and biocontrol agents) for management of water hyacinth. She has been a licensed aquatics and demo/research applicator since 2013.



Peter Berrini, CLP
Berrini & Associates, LLC
pberrini@comcast.net / 217-899-2153

Peter is a Professional Geologist and Certified Lake Professional with significant project experience in all aspects of lake and reservoir restoration and has specialized in planning, designing, permitting and implementing lake dredging projects throughout the United States for more than 30 years. He has been integrally involved with the completion of numerous dredging and sediment dewatering projects ranging in size from 300 cubic yards to 3,000,000 cubic yards and is a strong proponent of beneficial sediment reuse. In addition, he has managed numerous Clean Lakes Program Diagnostic-Feasibility Studies and Phase 2 Implementation Projects throughout his career that has included reservoir sedimentation surveys, shoreline protection designs, watershed plans, lake aeration and water quality enhancement alternatives.

Ashlee Haviland, CLM
Clarke Aquatic Services

Ashlee Haviland, CLM, has a Bachelor of Science from Manchester College and a Master of Environmental Science from Taylor University. She spent 10 years working for the Indiana Department of Natural Resources, starting with the Lake and River Enhancement program in 2007. Her work has included using hydroacoustics to create bathymetry, vegetation, bottom classification, and fish surveys. Ashlee has experience with GIS, hydrology, riparian and aquatic species, natural communities, and ecosystem processes. She has authored several reports in watershed evaluation and planning, providing solutions and recommendations to improve water quality and lake management opportunities. She has spent multiple years of leading and managing complex lake and watershed projects in the Midwest.

Sandy Kubillus, CLM
Sr. Environmental Consultant

Specializes in lake and pond management and consulting, especially water and sediment quality, bathymetric mapping, lake management plans, shoreline erosion control, wetland delineations and permitting. Active in the Illinois Lakes Management Association. Sr. Environmental Consultant with ILM since 1994. Adjunct instructor for Environmental Biology at the College of Lake County.



Adam Casey, CLM

Daniel T. Fee, pCLP

Dan earned a B.S. in Biology from Illinois State University.  He has a 40-year background in industrial water treatment working for Nalco Water.  Dan has 10 years’ experience as Lake Committee Chairman for Shorewood Forest in Valparaiso, Indiana. He also holds an Indiana aquatic herbicide license, an Indiana Watershed Certification and is an avid fisherman and boater.




Sara Peel, CLM
Arion Consultants, Inc.

Sara Peel, CLM currently serves as the At-Large Director on the NALMS Board of Directors. Sara is an Environmental Consultant for Arion Consultants and previously served as Director of Watershed Projects for the Wabash River Enhancement Corporation, a nonprofit focused on improving ecological, economic, and social conditions within the Wabash River basin. Sara received her BS in Biology and Chemistry from Alma College and her MS in Environmental Science from Indiana University School of Public and Environmental Affairs. Sara has over 16 years of water quality and watershed management experience. She currently serves as the President for the Indiana Lakes Management Society, is a board member of the Indiana Water Monitoring Council, and on the Purdue University School of Agriculture Dean’s Advisory Council.



Jade Young, CLM
US Army Corps of Engineers Louisville District

Jade L. Young, CLM, currently serves as limnologist and Water Quality Program Lead at the Army Corps of Engineers, Louisville District.  She oversees the management and execution of the District’s Water Quality Program and assures that the program is structured and managed to be responsive to mission requirements.  Jade’s experience includes the study of freshwater systems including small streams, large rivers, lakes and reservoirs.  Her areas of expertise include freshwater algal and macroinvertebrate ecology, and assessment of chemical and physical properties within aquatic environments.  In her career with the Army Corps of Engineers, Jade has worked in Water Quality in both a technical and supervisory capacity.  Her ability to initiate and engage in partnership efforts with other governmental and non-governmental stakeholders supports the development of holistic watershed approaches to evaluate and address concerns associated with water resources.  Jade has both a BS and MS in biology from Tennessee Technological University.



Zachary Eichenwald, PE, CLM
CDM Smith

Zach Eichenwald is a water resources engineer experienced in water quality assessments of lakes, reservoirs, rivers, and estuaries. He has applied his water quality expertise to evaluate water quality within surface water reservoirs and drinking water supplies and to evaluate the impact of wastewater treatment plant discharges on receiving water quality for projects throughout the country. Zach’s work includes diagnostic water quality studies of surface water supplies, building and applying hydrologic, hydraulic, and water quality models of surface water systems, and NPDES permitting support.

Wendy Gendron, CLM
Aquatic Restoration Consulting, LLC

Albelee Haque, CLP
Bangladesh Environment Network

David Mitchell, CLM
ABT Associates

Dr. Mitchell is an aquatic ecologist with 27 years of experience in water quality and watershed assessment, aquatic restoration and monitoring projects, water toxics control, ecological risk assessments, and water quality permitting throughout the United States. He has extensive experience in Clean Water Act regulatory compliance, permitting and policy issues. Dr. Mitchell presents frequently at national water resource management and nutrient/water quality conferences, has over 70 technical publications and presentations, provides expert testimony, and has co-authored technical manuals for lake/pond management and macrophyte control. Dr. Mitchell received his Ph.D. from Cornell University in Ecology and has been a Certified Lake Manager (CLM) certified by the North American Lakes Management Society since 1991 (inaugural class).

Kenneth Wagner, CLM
Water Resource Services LLC

Dr. Wagner holds degrees from Dartmouth College and Cornell University, with his Ph.D. earned in Natural Resource Management in 1985.  He has over 40 years of experience working on a variety of water resources assessment and management projects, including lake, reservoir, river, and watershed assessment, rehabilitation, and management, regulatory processes, and educational programs.  In 2010 he started Water Resource Services, a small company with a focus on water supply protection and lake management consulting. He is a former President of the North American Lake Management Society and former Editor in Chief of Lake and Reservoir Management, a peer-reviewed journal.


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Ann St. Amand, CLP
PhycoTech, Inc.

PhycoTech, Inc. is an environmental consulting company located in St. Joseph, Michigan specializing in aquatic analyses and dedicated to raising the standards in our industry. Our analysis services include: identification, enumeration, biovolume (algae) and biomass (zooplankton). We are a leader in our industry, providing our customers with a wide variety of related services based on the most current technology, including permanently mounted, archival slides of both algae and zooplankton. We also process core samples for diatoms and blue green akinetes.

Jennifer Lynn Jermalowicz-Jones, CLP
Restorative Lake Sciences

Dr. Jermalowicz-Jones holds three degrees—a BS from Michigan Technological University, an MS from Grand Valley State University, and a Ph.D. from Michigan State University. She did a thesis as a junior in high school titled: “The Experimental Use of Dilute Hydrogen Peroxide on Nuisance Algae to Reduce Lake Eutrophication”. Her love of lakes began at the age of 4 when she received her first microscope and had a pet turtle. Jennifer started Restorative Lake Sciences in 2012 to assist inland lake communities with evaluation of complex lake problems and offering ecologically responsible and economically feasible management and restoration options. In 2011, while a doctorate student at MSU, Jennifer was awarded a Professional Watershed Manager Certification and also received the prestigious Gilbert W. Mouser Fellowship. In 2020, Jennifer was awarded the “Master’s Jacket” for her 10 years of service on the Michigan Lake and Stream Association Board of Directors where she currently serves as the Science Advisory Chair. Jennifer regularly publishes in the Michigan Riparian and prepares hundreds of scientific-technical reports annually.



David Austin, CLM
Jacobs Engineering Group

Joe M. Bischoff, CLM
Barr Engineering

Joe has more than 23 years of experience in lake, reservoir, and watershed management, completing a multitude of lake diagnostic and feasibility studies and restoration actions. Joe’s primary focus is on nutrient cycling in lakes and reservoirs with a particular interest in sediment nutrient processes. Joe’s work on lake TMDLs in Minnesota included some of the first studies to include sediment P release, sediment P inactivation, and ecological structure. Joe is an instructor at the annual NALMS conference for the “Use of Alum for Sediment P Inactivation” workshop and routinely participates in national forums regarding nutrient cycling in lake and reservoir sediments. Joe is also an active member of NALMS’ Policy Committee and is the co-chair for the Society’s annual symposium to be held in Minneapolis in 2022.

Erik Bye, PCLP

James A. Johnson, CLM
Freshwater Scientific Services

James Johnson (MS Limnology, UMN–Twin Cities; BS Conservation/Zoology, UW–Madison) is the owner of Freshwater Scientific Services (fixmylake.com) and has over 20 years of experience working closely with citizen lake groups, local/state government, and university researchers to protect and improve the waters in the MN and WI. He specializes in developing lake management plans, monitoring and managing aquatic invasive plants, promoting the recovery of native plant communities, mapping urban stormwater ponds, and researching the impacts of common carp on wild rice and other native aquatic plants. He is currently the chair of the Minnesota Statewide Aquatic Invasive Species Advisory Committee and has served on various technical advisory panels for the University of Minnesota, MN Department of Natural Resources, and planning committees for regional lakes conferences.

Brad Kovach, CLP
BRK Environmental Consulting Inc.

Brad Kovach has 30 years of experience as an environmental consultant professional and has been a NALMS member since 2019. Brad has a B.S. in Biology from Middle Tennessee State University. Brad is biologist and owner of BRK Environmental Consulting where he supports clientele from his Minnesota office. His experience includes water quality permitting and compliance, wetland services, lake management, and aquatic plant inventories. In addition to being a CLP, Brad is also a Professional Wetland Scientist (PWS) and trained in stormwater permitting and erosion control. His experience also includes wildlife, botanical surveys and studies, stream mussel surveys, and avian studies. He also has extensive National Environmental Policy Act (NEPA), Endangered Species Act, and state utility facility siting and permitting experience when he was employed at larger consulting firms.

Dendy Lofton, CLM

Dendy Lofton, PhD, CLM, is a limnologist and aquatic ecologist at LimnoTech with over ten years of experience in water resource monitoring, assessment, and management. She holds a PhD in Environmental Science (Limnology) from the University of North Carolina at Chapel Hill where she studied carbon and nutrient cycling in shallow Arctic Alaskan lakes. Dr. Lofton applies her expertise in limnology, aquatic ecology and biogeochemistry to several focus areas, including lake restoration and management, stream restoration, urban waterfront revitalization, and watershed planning and management. Currently, she leads and supports water resource restoration- and management-related projects throughout the U.S., including Minnesota, Wisconsin, Illinois, Massachusetts, North Carolina, Florida, Texas, and California. Dr. Lofton is the practice lead for LimnoTech’s Lake Restoration and Management service area and is based in the Twin Cities, Minnesota.

Daniel McEwen, CLP
Limnopro Aquatic Science, Inc.

Dan McEwen, Ph.D., CLP, is the owner/operator of Limnopro Aquatic Science, Inc., a lake consulting company in central Minnesota. Previously, he held an appointment as an Associate Professor at Minnesota State University Moorhead where, for eight years, he taught courses in ecology, aquatic biology, environmental science, and quantitative methods. During summers he did field and laboratory research on shorebird-insect relationships in arctic Alaska. He earned his Ph.D. from North Dakota State University where he studied alternative stable states of shallow lakes and water-level management impacts to macrobenthic invertebrates in the large lake system of Voyageurs National Park. He became a NALMS Certified Lake Professional in 2017 and currently runs Limnopro and teaches as adjunct faculty at regional colleges and universities.

Moriya Rufer, MS, CLM
Houston Engineering

Moriya Rufer (MS, UMN – Twin Cities) is a Scientist III and Watershed Planner at Houston Engineering (HEI). She has 15 years’ experience in working with lakes and lake issues including monitoring, data assessment, aquatic invasive species, and planning. She is also a trained facilitator and involved in developing and implementing protection strategies for lakes in Minnesota. Her passion is working to protect and restore Minnesota’s water resources, and her personable approach makes her a trusted partner in lake projects. HEI provides a variety of lake services including modeling, mapping, planning, outlet design and installation, and dam modification to rock arch rapids.

Jeffrey Strom, CLM
Wenck Associates, Inc.

Jo Stuckert, CLM
Blue Water Science

Jo Stuckert is an Aquatic Scientist for Blue Water Science, a consulting firm in St. Paul, Minnesota. She has over 25 years experience in conducting aquatic plant surveys, zooplankton and phytoplankton identification, and fisheries management in Minnesota, Wisconsin, the Bering Sea, and Northern Pacific Ocean.  Currently her emphasis is on aquatic invasive species management and control.






Reynaldo Gumucio, CLM

Sam Robinson, CLP
Dredge America, Inc.

Sam Robinson, P.E., is the Vice President for a national dredging contractor, Dredge America, and is a founding partner in Dredge Engineering Consultants (DEC). He holds a B.S. and M.S. degree in Civil Engineering, with a focus in Water Resources, from The University of Tennessee, Knoxville. Sam is also a Professional Engineer in the state of Missouri and has 9 years of consulting and contracting experience on projects for lake restorations and environmental cleanup. He was a key member on the largest Hurricane Sandy relief project, successfully restoring over 21 miles of wetlands on the east coast, and has participated in over 50 remediation projects throughout the United States.


Andrew Skibo, CLM
Amaruq Environmental Services


Tyler Fowler, CLM
Waterworks Industries, Inc.

Tyler is currently the Regulatory Compliance Manager at Waterworks Industries Inc. located in Windsor, CA. He earned an undergraduate degree in Environmental Studies at San Francisco State University in 2005 with a minor in Geography. Tyler entered the field of Lake Management in 2007 and has been managing lake, reservoir and lagoon systems for twelve years. Tyler specializes in developing and implementing lake and lagoon management programs as well as providing regulatory compliance and permitting for various private clients and municipalities throughout the Western United States. Tyler is also a licensed applicator in California, Nevada and Oregon.



New Hampshire

Laura Diemer, CLM
FB Environmental Associates

Laura serves as the Environmental Monitoring Lead and Senior Project Manager for FB Environmental Associates (FBE) in Dover, NH. She manages and provides technical oversight of water quality monitoring and assessment projects and watershed management planning and implementation projects that require monitoring design and execution, water quality analyses, pollutant/nutrient load modeling, quality assurance/quality control review, plan development, statistical analyses, GIS mapping, and public presentations/communication. She has extensive experience working with a variety of clients, including federal, state, and municipal governments or agencies, watershed groups, lake associations, other non-profit organizations, and private businesses or individuals. Prior to FBE, she gained valuable experience through the National Park Service, New England Organics, Wells National Estuarine Research Reserve, and The Nature Conservancy. She holds a B.S. degree in Ecology & Environmental Science from the University of Maine, Orono and a M.S. degree in Soil & Water Resource Management from the University of New Hampshire, Durham.

Don Kretchmer, CLM
DK Water Resource Consulting

New Jersey

Christopher Doyle, CLM
SOLitude Lake Management

Larry Kovar, CLM
Aquatic Analysts, Inc.

Glenn Sullivan, CLM
SOLitude Lake Management


New York

Matthew Albright, CLM
SUNY Oneonta Biological Field Station

Stradder Caves, pCLM
SOLitude Lake Management

Stradder Caves attained a B.S. in Aquatic and Fisheries Science, with a minor in Marine Science, from the State University of New York College of Environmental Science and Forestry and an M.S. in Lake Management from the State University of New York College at Oneonta.  During his studies, he learned about the management and biology of aquatic ecosystems.  He now works for SOLitude Lake Management as an Aquatic Specialist and is involved in many different aspects of managing water bodies throughout New York State.


David Decker, CLM
D. J. Decker, P.E. & Associate

Luke Gervase, CLM
GEI Consultants

Luke Gervase has been a Project Ecologist with GEI Consultants Huntington Station office since August 2019. He is a graduate of SUNY E.S.F. (B.S. in aquatics and fisheries science with a minor in marine ecology) and SUNY Oneonta (M.S. in lake management). His master’s thesis and research were focused on writing a comprehensive lake management plan for the Millsite Lake Property Owners Association in Redwood, NY. Luke is a licensed aquatic pesticide applicator in Connecticut, New Jersey, and New York. A jack of all trades but an expert of none, Luke has experience working on lakes and ponds throughout the northeast, surveying for invasive species in the aquatic and terrestrial world, lecturing to a variety of groups, and has a particular passion and interest in aquatic vegetation and fisheries management. When not in the field Luke enjoys cooking, hiking, fishing, and rooting for New York sports teams.

Willard Harman, CLM
SUNY Oneonta Biological Field Station

Bill Harman has directed the State University of New York College at Oneonta Biological Field Station since 1968.  He holds the endowed R.J. Thayer Chair for Otsego Lake Research and has taught General zoology, Aquatic Biology, Marine Biology, Entomology, Parasitology, Malacology, Small boat Handling and Marlinspike Seamanship,  Biological Research Methods for SCUBA Divers, Lake Management and Management of the Aquatic Biota.  He now directs Master of Science in Lake Management and Professional Science Master’s degree programs, the only such programs in the country.  He is active in the Northeast Aquatic Nuisance Panel, the New York State Invasive Species Taskforce Advisory Council and Vice President of the New York State Federation of Lake Associations.  Students are now working in professional venues in the United States and Internationally. He spent 6 years in the US Navy as a diver in Explosive and Nuclear Ordnance Disposal, received a BS degree from the NYS College of Forestry (Wildlife Management) and a Ph.D. from Cornell University with concentrations in limnology, invertebrate zoology, and marine ecology.

Michael Martin, CLM
AES Northeast, PLLC
MichaelMartin@aesnortheast.com / 518-323-5455

Michael R. Martin, CLM, is an Environmental Scientist & Project Manager for AES Northeast in Plattsburgh, NY.  Michael is a past president of the North American Lake Management Society, former Regional Director of NALMS and the New York Federation of Lake Associations and a founding member of the Indiana Lake Management Society. Michael has nearly 40 years of lake and watershed management experience in the public, private, and academic/not-for-profit sectors, where he has studied and developed management programs on hundreds of water bodies throughout the New York, New Hampshire, Pennsylvania, New Jersey, Delaware, West Virginia, Virginia, and Indiana, addressing issues such as aquatic invasive species, nutrient enrichment, harmful algal blooms (HABs), internal phosphorus loading, urban & agricultural NPS pollution and developing watershed management plans that dealt with both in-lake and watershed sources of nutrients. He has extensive experience in lake & river watershed monitoring and management, watershed and water quality response modeling, stormwater modeling, environmental education, environmental permitting, aquatic invasive species management, HABs identification and management plans, wetland delineation, wetland restoration, and geographic information systems. As the founding executive director of the Adirondack Aquatic Institute, Michael helped establish a volunteer lake monitoring program and brought to light critical water resource issues facing the Adirondack region. He began his career as an environmental scientist with the State of New Hampshire, where he co-founded NH’s citizen lake monitoring program and developed its water quality database. Michael was the recipient of NALMS’s 2001 Technical Excellence Award for Public Education and Research in recognition of extending effective and creative education in lake restoration, protection and management to youth, to citizens, and to professionals. He founded LakeStewardship.org in 2006, a non-profit organization that promotes lake and environmental stewardship, providing resources for lake residents, lake associations, and cottage owners. Michael has a degree in Botany from the University of New Hampshire, specializing in limnology and phycology.

David Matthews, CLM
Upstate Freshwater Institute

Dave serves as Director of the Upstate Freshwater Institute (UFI), a Syracuse-based not-for-profit devoted to advancing freshwater research and education.  Dave received B.S., M.S., and Ph.D. degrees from SUNY-ESF and has conducted fundamental and applied research on lakes, rivers, and streams across New York for more than 20 years.  His research interests include harmful algal blooms, sediment-water interactions, dreissenid mussels, eutrophication and recovery, mercury cycling, and ammonia toxicity.  Dave’s research has resulted in the publication of more than 60 articles in peer-reviewed scientific journals.


Megan Myers, CLP
Rensselaer County Soil & Water Conservation District

Megan holds a BS in Environmental Studies from SUNY ESC. Part of her college degree included summer residencies in the Adirondacks, located at SUNY ESF’s Wanakena Ranger School, the Cranberry Lake Biological Station, and Adirondack Ecological Center. In addition, she was accepted into a School of Field Studies Program through Boston University for Wildlife Management, where she spent a summer abroad in Africa in Amboseli and Tsavo near the base of Mount Kilimanjaro in Kenya. Here, she primarily conducted fieldwork including elephant population surveys and vegetation inventories. 

Beyond Megan’s degrees, she pursued graduate-level courses in physical science at MCLA and UMass Amherst and earned an extensive amount of continuing education units. She received Certificates in Advanced Field Botany, and Wildlife Rescue and Oiled Response. She has completed several trainings in Wetland Delineation under the US Army Corps of Engineers methodology, and in Watershed Management by the US Environmental Protection Agency. She has accomplished Certifications as a Senior Ecologist with the Ecological Society of America, a Professional Wetland Scientist (PWS) with the Society of Wetland Scientists, Apprentice Wetland Scientist with the NH Board of Natural Scientists, and now also a Certified Lake Professional (CLP) with NALMS. She is a member of the NYS Federation of Lakes Association, North American Lakes Management Society and on the Board of Directors for the Soil & Water Conservation Society-Empire NY Chapter.

Megan is an NYS DEC Licensed Volunteer Wildlife Rehabilitator and NYS DEC Licensed Nuisance Wildlife Control Operator with a special condition for the use of Beaver Cable Restraints.

Since 2006, Megan had been professionally employed at an engineering firm, Guntlow & Associates, Inc. in Massachusetts as a Wetland Specialist, consisting of a broad range of specialties. She is a Wetland Delineator which demands the knowledge of vegetation identification and sampling, soils interpretation, and documenting indicators of hydrology. In this profession, she provides regulatory consultation for residential, commercial, municipal, and institutional projects. As a consultant, she specializes in some of the most stringent environmental regulations known in the nation, the MA Wetlands Protection Act, MA Endangered Species Act, and US Clean Waters Act. Megan designs environmental plans to meet environmental regulatory requirements, including but not limited to; notes and specifications for onsite erosion controls and sedimentation prevention plans, wetland mitigation plans, riparian restoration plans, and invasive species removal plans. These plans are proposed to local Conservation Commissions, and state and federal regulatory agencies for approvals and issuances of environmental permits.

Megan has recently reduced her consulting services in Massachusetts and Vermont as a Wetland Specialist, to become a new staff member to the Rensselaer County Soil and Water Conservation District (SWCD) in Troy, NY. She’s looking forward to assisting her local community in this new direction.    

Megan is a volunteer for the lake she resides on as a 4-H Leader in Environmental Education, a chair of her lakes Environmental Committee, and participates in the PRISM and NYSFOLA’s Citizens Statewide Lake Assessment Program (CSLAP). Here, she is involved in sharing the tasks of conducting aquatic plant sampling and collecting Babcock Lake water samples during the summer months to aid in the preparation of an annual lake report. Lastly, Megan prepared an extensive Native Aquatic Plant Removal Analysis for Babcock Lake, and it was recently included in their lakes Management Plan.

Alejandro (A.J.) Reyes, CLM
Northeast Aquatic Research

Alejandro (A.J.) Reyes received a B.S. in Ecology at SUNY Plattsburgh and an M.S. degree in Lake Management from SUNY Oneonta. A.J. spent years living in various parts of the country working on water quality and invasive species research projects with the United States Geological Survey. Most recently, he served as an Extension Associate for North Carolina State University where he was the liaison between multiple stakeholder groups including the reservoir utility owner, the NC Department of Environmental Quality, and the thousands of residents that lived along the shoreline. A.J. recently moved back to the northeast and began working for Northeast Aquatic Research at the beginning of 2018. A.J. leads and assists in a number of lake water quality and aquatic plant management projects in New York and Connecticut. When he’s not managing lakes, A.J. enjoys fishing, hiking and cheering on New York sports teams.

Dan Stich, CLM
SUNY College at Oneonta – Biology Dept.

Leanna Thalmann, pCLM
Ausable River Association

Leanna is the Water Quality Associate for the Ausable River Association in Wilmington, NY. Her work revolves around clean water, specifically focusing on road salt impacts to freshwater. Leanna also monitors lakes and streams in and around the Ausable River Watershed. Her interests lie where the natural and developing world meet. She holds a M.Sc. in Plant and Soil Science from the University of Vermont, as well as two undergraduate degrees in Environmental Science and Geology from the State University of New York at Plattsburgh.

Holly Waterfield, CLM
SUNY Oneonta Biological Field Station

Nicole White, CLM
Little Bear Environmental Consulting LLC

Nicole has been with the New York State Department of Environmental Conservation’s Invasive Species Coordination Section for the past several years. Nicole is a conservation biologist with over 15 years of experience in water quality monitoring, riparian land protection, and aquatic invasive species management. She owns an environmental consulting firm which has contracted with the Westchester County Soil & Water Conservation District, Hudson River National Estuarine Research Reserve, and the Mid-Atlantic Regional Seed Bank. She enjoys working with a variety of sea monsters and stakeholders in complex watersheds. She earned a B.S. in Conservation Biology from the SUNY College of Environmental Science & Forestry.

Brendan Wiltse, CLM
Ausable River Association

Brendan is the Science & Stewardship Director for the Ausable River Association in Wilmington, NY. His research focuses on road salt impacts to freshwater lakes and streams, the response of lakes and streams to recent climate change using a combination of neo- and paleolimnological approaches, and studying the distribution of fish species using environmental-DNA. Brendan is also an Adjunct Faculty member at Paul Smith’s College, teaching a Biostatistics course. He holds a Ph.D. in paleolimnology from Queen’s University and a B.Sc. in Field Biology from Paul Smith’s College. Brendan also serves on the board of the Adirondack Lakes Alliance as a regional director.

Kiyoko Yokota, CLM
SUNY Oneonta Biological Field Station

Kiyoko Yokota is a limnologist with a particular interest in phytoplankton population dynamics and biogeochemical cycling. She teaches undergraduate and graduate limnology, lake management, and other biology courses at State University of New York at Oneonta and volunteers as a technical advisor for Otsego Lake Association in Otsego County, NY, USA. Kiyoko and her research collaborators collect high frequency lake data with a NSF-funded monitoring buoy on Otsego Lake and participate in various team lake science projects through the Global Lake Ecological Observatory Network. Kiyoko graduated with a B.S. (biology w/ ecology emphasis) from Saint Cloud State University in Minnesota and qualified as an Associate Professional Engineer (As.P.E.Jp) while working for a civil engineering consultancy in Tokyo, Japan, on water quality prediction and management projects for new and existing reservoirs, lakes and rivers. Kiyoko earned a Ph.D. in Ecology, Evolution and Behavior from University of Minnesota and completed a short-term postdoctoral training at Netherland Institute for Ecology (NIOO-KNAW) before she started to teach full time.


North Carolina

West Bishop, CLP
SePRO Research & Technology Campus

West’s research focus is on efficient proactive and reactive algae management as well as water quality improvement.

H. Dean Givens, CLM
Town of Lake Lure

H. Dean Givens has been the Director of Lake Operations for Lake Lure since 2008.


Nova Scotia (Canada)

Cameron Deacoff, CLP
Halifax Regional Municipality

Cameron serves as the municipality’s senior subject matter expert with regards to water issues. In this capacity, Cameron serves on inter-jurisdictional committees on stormwater and wastewater, develops and leads water quality monitoring programs and projects, leads floodplain and watershed studies in support of regional planning initiatives, supports the development and implementation of climate change adaptation and mitigation projects and studies, and works with local universities, non-governmental organizations and other groups to achieve shared aims in environmental stewardship.





Jessica Glowczewski, CLM
City of Akron Water Supply

Ms. Glowczewski is the Watershed Superintendent for the City of Akron. She has been involved in watershed management for ten years with experience in program development, watershed stewardship and education, recreational and drinking water supply reservoir management, stormwater and property management, project design, environmental monitoring, sampling, and grant writing for the Upper Cuyahoga River Watershed and Lake Rockwell, LaDue, East Branch and Mogadore Reservoirs. She was directly involved in the development and implementation of the only Ohio EPA approved Watershed Control Program. She earned her Conservation BS from Kent State University and is licensed as a Class III Water Supply Operator and a Commercial Pesticides Applicator through the Ohio Department of Agriculture.

Edward Kwietniewski, CLM
Aqua DOC Lake and Pond Management

Edward Kwietniewski has been engaged with water and its many uses throughout his life. He received his Bachelors in Aquatics and Fisheries Science through the State University of New York College of Environmental Science and Forestry and completed his Masters in Lake Management through the State University of New York College at Oneonta. His thesis work consisted of monitoring and developing a holistic management plan for Rushford Lake, a large reservoir in western New York that engaged in an annual large-scale drawdown. For the past 4 years since he has lived in Ohio where he works hand-in-hand with lake stakeholders to assist and develop data-driven short-term and long-term solutions to nuisance growth on various water bodies across the state. In his spare time, he is an extremely avid fisherman and vehicle tinkerer with a drive to continue to develop new skills.


Tony Clyde, CLM
U.S. Army Corps of Engineers, Tulsa District

Ontario (Canada)

Brian Ginn, CLM
Lake Simoe Region Conservation Authority

Brian is the Limnologist with the Lake Simcoe Region Conservation Authority in Newmarket, Ontario, Canada. His research expertise uses organisms to monitor environmental conditions, assess ecological change, and develop lake management strategies. To date, his research has addressed environmental issues such as: surface-water acidification, nutrient inputs (eutrophication), changes in fish habitat, climate change, and how landscape development (i.e. urbanization) impacts lake environments.


Joshua Brainerd, CLM
Devils Lake Water Improvement District

Josh Brainerd is the Lake Manager and Executive Director for the Devils Lake Water Improvement District (DLWID), which is located in Lincoln City on the beautiful Oregon Coast. Brainerd received his Bachelor’s Degree in Environmental Biology from Illinois College in 2005. After graduating, Brainerd began his career in the environmental consulting field as a project manager. From there, he transitioned into a not for profit environmental career. After several years of successfully managing both large and small environmental projects for various organizations, Brainerd accepted a position with DLWID as their new Executive Director in 2016. Brainerd moved to Lincoln City, Oregon, where he is involved in several civic organizations and has become a local community leader in sustainable water management.

Mark Rosenkranz, CLM
Lake Oswego Corporation

Mark Rosenkranz has been working on lakes in Oregon for over 20 years, first as a graduate student at Portland State University where he received a Masters in Environmental Management followed by 16 years as a staff scientist for the Lake Oswego Corporation (LOC). His work at LOC is focused on invasive species management, watershed monitoring, and phosphorus control in an urban lake. As climate change intensifies storm events and leads to warmer summer weather it is going to be crucial to plan for how surface water quality will be impacted. Mark has been a member of NALMS since 2002 and served as President of the Oregon Lakes Association in 2004 and 2005.

Rhode Island

Matthew Ladewig, CLM
ESS Group, Inc.

Carl Nielsen, CLM
ESS Group, Inc.


South Carolina

Julie Davis, CLM
Greenwood County Lake Management

Born and raised in the upstate of South Carolina, Julie Marie Corley Davis has served as Director of Lake Management for Greenwood County since the fall of 2006. Lake Greenwood, situated in the foothills of SC is an 11,400-acre lake owned by Greenwood County and bordered by three counties. Lake Greenwood, a FERC licensed project, was created in the late 1930s and is a treasure for the surrounding communities. After graduating from Clemson University with a Bachelor of Science in Resource Management and a Minor in Wildlife, Aquaculture, and Fisheries Biology, Julie began her professional career with the SC State Park Service. After working with them for six years, she went back to Clemson and obtained her Master’s degree in Parks and Protected Area Management. After graduation, Julie was hired on with Greenwood County when the Lake Management Department was created in 2006.

Julie became one of the first Certified Lake Managers in South Carolina as recognized through the North American Lake Management Society. Along with this, she is a Certified Erosion Prevention Sediment Control Inspector, Master Pond Manager, and a licensed Herbicide and Public Health Applicator. When off duty, she travels home to the lake on which she lives, Lake Thurmond, or as most remember it, Clarks’ Hill. Lake Thurmond is on the Savannah River in McCormick County on the border between GA and SC. There, she lives with her husband, Matt and two labs, a black lab named “Lizzie” and a chocolate lab named “Chloe”. They are out on the lake as often as possible.



Savannah Rampy, LMA
Go Fish Texas LLC

Savannah Rampy, is a Wildlife Biologist with a focus in pond and lake management, located in Canyon, Texas. She earned her B.S in Wildlife Biology from West Texas A&M University. During this time she also earned experience with B.A.S.S Nation conservation, where she worked on fish habitat, shoreline restoration, invasive species control, and community outreach for lakes and reservoirs in New Mexico. She is currently the owner of her pond and lake management business Go Fish Texas llc., where she primarily works on construction and implementation of fish habitat, pond assessments, pond construction, and invasive species management plans for ponds. In her spare time Savannah is an outdoorsman who loves any chance she can get to get out and enjoy our natural resources.


Judith Dudley, CLM

Brian Mattax, CLM
Owner & Sr. Ecologist, Mattax Solutions
Sr. Aquatic Scientist, Louis Berger

Terry McNabb, CLM

Terry McNabb is a graduate of Michigan State University with a degree in Water Resource Management and operates Aquatechnex, LLC.  Aquatechnex LLC is a full service lake and aquatic plant management firm that operates from offices in California, Oregon, Washington, Idaho and Montana. The firm has a recognized expertise in the restoration of lake and river systems impacted by invasive aquatic weeds and management of Harmful Algae Blooms. Terry has been involved in lake management for over 40 years. He is a past president of the Aquatic Plant Management Society, the North American Lake Management Society and the Western Aquatic Plant Management Society. He is a recipient of the US Asia Environmental Partnership grant to work with lake restoration activities in Malaysia and Indonesia. He is a cooperator with the US Army Corps of Engineers Aquatic Plant Control Research Program and an instructor for the University of California-Davis Aquatic Weed School. 

Barry Moore, CLP

Eric Zimdars, LMA

Eric’s initial interest in freshwater systems came from fishing trips with his grandfather in Iowa and godfather in Georgia throughout his youth. He went on to pursue a B.A. in Environmental Studies at Warren Wilson College, where he focused on Environmental Education. Upon graduating, he served in the Peace Corps in Paraguay as an agricultural volunteer. Inspired by his time living in rural Paraguay, he decided to pursue a master’s degree focused on water quality when he returned to the states. While completing a M.S.C.E. at the University of Washington, concentrated in Water Quality in Natural Systems, Eric served as a Pathways Intern with the Seattle District Corps of Engineers (CENWS). Since completing his masters, Eric has worked full-time at CENWS as a water quality engineer. He conducts physical sampling, monitoring, and water quality modeling of civil works projects and their associated water bodies in Washington, Northern Idaho, and Northwest Montana. He also helps co-facilitate the EPA Benthic Cyanobacteria Discussion group.


Reesa Evans, CLM
Adams County LWCD

Ronald French, CLM
Great Lakes Ecological Monitoring LLC

Ronald French has over 30 years of environmental monitoring experience with lakes and streams, serving as principal-in-charge or project manager for projects involving; water quality, sediment remediation, Total Maximum Daily Loads (TMDLs); stormwater impacts to lakes and streams, wetland delineations and fish/macroinvertebrate community structure studies. Ron has spent a major part of his career assisting local and regional agencies in resolving water quality issues to meet project-specific regulatory standards. This work has included conducting water quality studies of lakes and streams to support Natural Resource Damage Assessments (NRDA), collection of fish in reservoirs through gill-netting and electrofishing, preparation of field sampling plans and quality assurance project plans, statistical analysis of data, preparation of expert witness reports and assisting municipalities with grant funding applications.  He has assisted agencies in Oklahoma with a large water quality monitoring program to assess the impacts of nutrient runoff from farm fields into streams and reservoirs.  He was instrumental in leading the development of a Use Attainability Analysis on the Chicago Area Waterway System to identify existing and potential uses, in order to develop appropriate water quality standards to protect those uses. He has built up many contacts in local, state and federal agencies through the development and processing of these projects, and is very familiar with the regulatory and permitting process related to projects that may impact water quality.

Brian Valleskey, CLM
Geosyntec Consultants, Inc.

Brian is a Hydrologist and Certified Lake Professional with the knowledge and experience in working on numerous lakes based projects from shoreline restoration and dredging to biological ecosystem assessments.  With over 15 years of permitting compliance and grant writing capability, Brian has worked throughout the Midwest and has extensive knowledge of the regulatory environment.  Brian also serves on numerous advisory boards, committees, and has helped guide watershed-based planning activities tied to lake management focused on minimizing pollutant loading with strategic and prioritized project development.



Learn more about the NALMS Certification Program