Welcome to Wisconsin River Power Company

The WRPCO FERC Hydroelectric Project #1984 is located in Wood, Juneau and Adams Counties in South Central Wisconsin. It is comprised of the Petenwell and Castle Rock Reservoirs. Dams at the reservoirs were completed in the late 1940s and early 1950s.

The project boundary covers 59,000 acres with 40,080 acres of water surface. There are approximately 219 miles of shoreline and approximately 29 miles of shoreline commons area.

  • In the Petenwell Reservoir, there are a total of 25,180 acres of water surface and approximately 12.7 miles of Shoreline Commons Area. The reservoir is the second largest inland body of water in Wisconsin.
  • In the Castle Rock Reservoir, there are a total of 14,900 acres of water surface and approximately 16.3 miles of Shoreline Commons Area. The reservoir is the fifth largest inland body of water in Wisconsin.

Integrys Energy Group acquired ownership interest and management of the WRPCO on December 31, 2000.

Be Safe! Accidents and fatalities that occur near dams can be prevented by using common sense, staying clear of, adhering to warning sirens, signs and barriers, and understand the dangers to be found near them. Make safety your highest priority while recreating near hydroelectric facilities.

Water Levels
5/27/2015 12:30:18 PM CST

Wisconsin River 4‑Hour Change 12‑Hour Change
Petenwell
Head Water Level 924.07 feet -0.02 +0.10
Tail Water Level 882.53 feet +0.31 +0.21
Total Flow 12,224 cfs +2,442 +5,714
Castle Rock
Head Water Level 881.82 feet -0.01 +0.05
Tail Water Level 847.87 feet +0.74 +1.63
Total Flow 12,158 cfs +2,372 +6,224

Data courtesy of Energy Supply and Control