LakeQuality is a lake information and trip-planning resource that helps people explore water quality, fishing, and outdoor destinations. It tracks 37,603 lakes across 49 U.S. states, five Canadian provinces, and 38 other country hubs, bringing together measurements and lake-related information in one place. Its water-quality pages present clarity, phosphorus, and algae readings from EPA and state or provincial agencies as reported; live water temperature and level data are available from USGS gauges where they exist.

Visitors can compare lakes by water clarity, depth, size, and trends, explore rankings for cleanest, clearest, improving, or declining lakes, and find options suited to activities such as swimming, kayaking, fishing, and ice fishing. LakeQuality also offers a lake-matching quiz, fishing forecasts covering 137 documented species, and resources on invasive species, ice safety, and historical ice-out dates. Travelers can search for cabins and rentals near lakes, while local browsing tools help locate measured lakes near cities. Annual reports summarize lake water-quality findings, including nutrient and algae readings.