The Secchi Dip-In is a demonstration of the potential of volunteer monitors to gather environmentally important information on our lakes, rivers, and estuaries. Volunteers have been submitting information during the annual Dip-In since 1994. Please join them in this international effort to track changes in water quality! The Secchi Dip-In is part of Lakes Appreciation Month, where we celebrate our lakes throughout the month of July each year.