Mill Creek Fish Passage

TL;DRAbstract

Mill Creek is a tributary to the Walla Walla River, and flows through the city of Walla Walla, Washington. In the 1930s, after enduring several large floods, the people of Walla Walla, led by Virgil B. Bennington, started a petition for federal funding to build flood control structures to protect the City. Following approval by Congress, President Roosevelt signed the Flood Control Act of 1938 in June of that year. The Act called for two flood control projects to be built by the Corps, the Mill Creek Project and the Mill Creek Channel. The Mill Creek Project includes two dams, a mile of Mill Creek between the dams and a storage reservoir, and surrounding lands. Bennington Dam (or Diversion Dam) at river mile (RM) 11.5 is the uppermost of the two dams. Its purpose is to divert flood flows up to 5000 cfs into the reservoir where the water is stored until it can be safely discharged. The Mill Creek Channel continues downstream from the Division Dam Head Works at RM 10.6, to its end at RM

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