Study of River Stage Fluctuations Resulting from Possible Operations of the Susitna Hydroelectric Project

by H. C. Lin, Harza Engineering Co, Chicago, IL, USA,
K. Jawed, Harza Engineering Co, Chicago, IL, USA,

Document Type: Proceeding Paper

Part of: Waterpower '85


Operation of the project to follow load may result in discharge and river stage fluctuations which could affect habitats and fish food sources. Limitations on hourly, daily, and weekly discharge variations at the Watana dam site are proposed for evaluation of the potential fluctuations. A number of outflow hydrographs are developed from hourly operations of the reservoir for various load demands, reservoir inflows, and instream flow requirements. The hydrographs are routed downstream to estimate river stage and discharge fluctuations at selected locations. The U. S. National Weather Service Dam-break model (DAMBRK) is used to route the flood hydrographs. The limitations of the model to simulate receding parts of the hydrographs (low flow) are discussed.

Subject Headings: Water discharge | Rivers and streams | Hydro power | Power plants | Load factors | Reservoirs | Hydrologic models | Flow simulation | Alaska | United States

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