By Timothy D. Stark
Q: Is it possible to cover an entire reservoir with a geomembrane? In addition, is it possible to line an entire reservoir or lake with a geomembrane?
A: The answer is yes to both questions. Geomembranes are frequently used to cover reservoirs, especially in California (USA) for water quality purposes.
The October/November 2008 issue of Geosynthetics has an article about a floating cover for Wrigley Reservoir on Catalina Island in California by Andrew Mills. A February/March 2006 article in Geosynthetics by Slifer, Monley, Hier, and Stark describes the lining of Prospect Lake (53 acres) in Colorado Springs with a 30-mil PVC geomembrane.