Yes it is a water shed lake and there is a valve that can be opened to drain. When it was first built it filled before they wanted it to. It took 3 months to get rid of 90 % of the water. One 3.5 to 4 inch rain or two 2 inch rains and it would be back to full and would have to start over. On large rain events the water gets very muddy. This happens every spring. Would this prevent bass from spawning? My goal for the spring will be to get as many 10 to 12 inch bass added to the lake as I can.