Petenwell Lake, slightly north of Castle Rock Lake, is also part of the Wisconsin River Flowage. It is a man-made lake of 23,040 surface acres and a maximum depth of 48 feet. The dam on the lake is owned by the Wisconsin Power Company and is used to generate electricity. There are a number of county parks located on both sides of the lake.
Petenwell & Castle Rock Stewards www.pacrs.org