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.

Spring "Increased River Flow" Warning

Ice on rivers is now thawing causing river flows to increase significantly making activities on rivers very dangerous this time of year. Ground may still be frozen so rainfall can mean significant runoff leading to increased river flows. Please be aware of weather forecasts and current river conditions before attempting any recreational uses of rivers and flowages.

Water Levels
3/29/2015 5:10:20 PM CST

Wisconsin River 4‑Hour Change 12‑Hour Change
Petenwell
Head Water Level 922.53 feet +0.07 +0.06
Tail Water Level 880.85 feet -0.33 -0.04
Total Flow 2,818 cfs +61 +381
Castle Rock
Head Water Level 880.72 feet +0.12 +0.13
Tail Water Level 845.11 feet -0.04 +0.22
Total Flow 3,309 cfs +76 +681

Data courtesy of Energy Supply and Control