Secchi Disk Readings
Water transparency is a quick and easy measurement that tells scientists a lot about a lake’s water quality. First it indicates the amount of light penetration into a lake. Second, Secchi transparency provides an indirect measure of the amount of suspended material in the water, which in many cases is an indication of the amount of algae in the water.
Long-term transparency monitoring by Citizen Lake Monitoring Program volunteers helps scientists detect signs of degradation to a lake. Generally, the sooner water-quality problems are detected, the easier and less expensive it is to restore the lake to its previous state.