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Title: Brush Creek, Kansas City, Missouri : hydraulic model investigation
Authors: United States. Army. Corps of Engineers. Kansas City District
Linder, Walter M. (Walter Marcellus)
Turner, Herman O.
Keywords: Brush Creek
Kansas City (Mo.)
Hydraulic model
Channel improvement
Flood control
Flood prevention
Stream channelization
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-92-1.
Description: Technical Report
Abstract: Brush Creek drains approximately 29.4 square miles of urban area in the central portion of the Kansas City, MO, metropolitan area. Diverse development covers the entire area. Within the study reach, State Line Road to Woodland Avenue, the channel is crossed by a number of bridges that present varying degrees of flow restriction. Although several previous studies by the US Army Engineer District, Kansas City, identified a severe flood hazard along Brush Creek, a damaging flood in the Plaza area had never been experienced prior to September 1977. On 12 and 13 September 1977, the Kansas City metropolitan region experienced flooding of catastrophic proportions. The Plaza area was devastated with 5 to 6 ft of water in shops and restaurants adjacent to Brush Creek. As a result of the September 1977 flood, the Kansas City District was asked to study the flooding problem. A number of structural and nonstructural measures were identified that could reduce the flood hazard. These plans called for bridge modifications, channel widening, and channel deepening. Water-surface computations were made but did not provide the desired accuracy for a design water-surface profile. A physical model study was authorized. The study was conducted using a fixed-bed model constructed at a scale of 1:35 to study the various flood control measures. Approximately 3 miles of natural and improved channel from State Line Road to Woodland Avenue were reproduced. Testing of the project began with reproducing prototype high-water marks obtained during the September 1977 flood. Various alternatives concerning bridges and channel modifications were examined. Many of the existing bridges were very restrictive to the flow. Flood conditions were improved by either removing or replacing these existing bridges with less restrictive bridges. The Volker Park conduit was replaced with an open channel, which also reduced flooding. The model was reconstructed to incorporate proposed channel modifications developed by the Corps of Engineers. This plan was called the Corps BCP-9 Plan. These modifications called for bridge and channel widening and overall channel deepening in the reach from the beginning of the Plaza to downstream of Troost Avenue. These modifications significantly lowered water-surface elevations caused by the various floods. Hydrograph tests were conducted on the existing conditions and BCP-9 Plan. These tests showed that any proposed modifications would not increase the downstream discharge or the downstream flooding potential. The model was again reconstructed to proposed modifications requested by the city of Kansas City. This plan, called the Park Plan, was located between Roanoke Parkway and downstream of the Paseo. The Park Plan used wider and deeper channel sections than the BCP-9 Plan. Several pools were formed by small dams throughout the channel. Drop structures were required at two locations in the channel. The Park Plan water-surface elevations were generally comparable to those of the BCP-9 Plan.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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