Lake Observations by Citizen Scientists and Satellites

How are lakes changing over time, and what does that mean for freshwater resources? Lake Observations by Citizen Scientists & Satellites (LOCSS) brings together volunteer measurements and satellite data to monitor lake water levels around the world. By reading simple shoreline gauges, participants help scientists measure changes in lake height, surface area, and water volume—key indicators of drought, flooding, and long-term climate trends.

Your observations expand the reach of scientific research, providing data from lakes that might otherwise go unmonitored. Whether you contribute once or return regularly, each report improves our understanding of how water moves through the environment and helps inform future conservation efforts.