| DAM REPAIR AND POWERHOUSE CONSTRUCTION |  |
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GOAL: Repair the aging dam and spillway in the Rock River |
The City of Watertown engaged Zenith Tech to repair the aging dam and spillway in the Rock River. Along with the dam repair, the Rock River Power & Light Company had a new powerhouse constructed to house its two turbines. The powerhouse is located between the old tainter gate section and the existing dam. The new turbines operate under 10 feet of head. The photos to the right illustrate the before and after construction conditions of the project. |  |
CHALLENGE: Protect habitat and anchor existing dam |
This section of the river is a sensitive fishery. To assure that habitat was protected, close coordination with the Wisconsin Department of Natural Resources was required. Bank protection was important to the City because of the location of the project in the City. There is a pedestrian facility on the east side of the river. The results of the protective effort can be seen between the new building and the existing vegetated river bank. |  |
SOLUTION: Resurface existing dam with reinforced concrete and add waterproof membrane |
The construction required that the existing dam be anchored into bedrock using grouted cable tendons. The old dam was then resurfaced with reinforced concrete and a waterproof membrane was installed on the upstream face. The existing spillway was rehabilitated as part of the project. Reference: City of Watertown Director of Public Works, Joseph Radocay |
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