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Title: Big Creek flood control project, Cleveland, Ohio hydraulic model investigation
Authors: United States. Army. Corps of Engineers. Buffalo District
Pickering, Glenn A.
Keywords: Flood control
Hydraulic models
Hydraulic structures
Big Creek
Cleveland, Ohio
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; HL-83-7.
Description: Technical Report
Abstract: Tests were conducted on a 1:40-scale model of Big Creek to investigate the hydraulic performance of a proposed floodway channel and a section of modified channel, The model reproduced the entire proposed floodway channel, a portion of the existing Big Creek main channel, and a section of modified channel downstream from the existing channel. Distribution of flow between the existing channel and the floodway channel was found to be slightly different than anticipated, but this difference was so small that it had no significant effect on flow conditions in either channel. Flow conditions were satisfactory in the concrete chute of the upstream end of the proposed floodway channel. A hydraulic jump formed at the lower end of the chute structure, resulting in satisfactory flow conditions at the entrance to the natural channel. The original design gabion drop structures used in the floodway to reduce the grade along the channel caused flow to concentrate near the middle of the channel, resulting in high velocities. Also, depths of flow in several reaches of the channel were less than anticipated. Revisions to these drop structures resulted in good flow conditions throughout the floodway channel. Although the flood-control project did not include improvements to the Big Creek main channel, velocities and water-surface elevations were measured in the reach reproduced in the model. A concrete transition between the downstream end of a three-barrel conduit and the modified channel caused flow to concentrate in the channel which resulted in movement of the riprap immediately downstream from the transition and along the left bank. The concrete transition was removed, and the area was shaped with riprap. This resulted in satisfactory flow conditions in the modified channel.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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