Kankakee Dam Discharge Characteristics

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by J. Rodger Adams, Illinois State Water Survey, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract: The low-head dam on the Kankakee River has flashboards which are installed as the discharge decreases in early summer, to maintain the upstream pool level. In response to concern over zero discharge are depth downstreams, the Illinois Department of Conservation (IDOC) was ordered to install the flashboards in stages before the discharge drops below 1300 ft3/s. The Illinois State Water Survey conducted this study to determine the head-discharge characteristics of the dam. Measurements of head and discharge were obtained for spillway conditions with flashboards, without flashboards, and with one-half the length of the flashboards in place. Rating curves and equations are presented for the with flashboards and without flashboards conditions.

Subject Headings: Dams | Spillways | Water discharge measurement | Water discharge | Rivers and streams | Head (fluid mechanics) | Ratings | Curvature | North America | Illinois | United States

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