For Release: 01/27/2015

Petenwell and Castle Rock Flowages Begin Annual Drawdowns in Advance of Spring Runoff

Necedah, WI – Wisconsin River Power Company (WRPC) will begin drawing down the Petenwell and Castle Rock flowages on the Wisconsin River starting in February to prepare for the spring runoff of melting snow from northern Wisconsin. The drawdowns will be gradual and minimized as much as possible. Drawdown levels of up to five and one half (5.5) feet at Petenwell and six and one half (6.5) feet at Castle Rock could occur if National Weather Service predictions indicate that a potential exists for a large amount of spring runoff.

The Castle Rock reservoir drawdown will begin on February 1, 2015 and the Petenwell reservoir drawdown will begin February 10, 2015. Both drawdowns are anticipated to be completed mid-March 2015 when the snow melt typically begins to refill the reservoirs.

The WRPC urges recreational enthusiasts to beware of the dangers of shifting and unstable ice due to any type of flowage drawdowns.

Current river flow and reservoir elevations can be found on the WRPC website at for up-to-date information.

For More Information, Contact:

  • Joseph Sukana
    Wisconsin River Power Company