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Title: Re-evaluation of underseepage controls, Mississippi River Levees, Alton to Gale, IL : Phase I, Performance of underseepage controls during the 1973 flood, Volume 1 : text
Authors: United States. Army. Corps of Engineers. St. Louis District.
Keywords: Mississippi River
1973 Mississippi River Flood
Publisher: United States. Army. Corps of Engineers. St. Louis District.
Engineer Research and Development Center (U.S.)
Description: Technical Report
Introduction: To prevent against underseepage failure, the St. Louis District, Corps of Engineers, installed an extensive system of underseepage control measures at critical locations along approximately 240 miles of Mississippi River levees in levee districts in eastern Missouri and southwestern Illinois. These measures consist primarily of pressure relief walls, with a few seepage berms in areas where sufficient right-of-way and borrow material were available. To supplement these works, an extensive system of piezometers was installed to permit evaluation of the system's performance during actual flood and to determine the need for additional control measures. The purpose of this report is to describe the methods used in analyzing piezometric and well flow data for the Alton to Gale levees and provide a performance evaluation of the underseepage pontrol measures in these districts using data obtained during the flood of record (1973). Reaches found to be critical, based on 1973 field conditions or analysis using 1973 data, are identified for further study. Design of remedial measures will be presented in the Phase II report of the study. The report also evaluates the adequacy of existing relief wells using flow measurements made during the flood.
Appears in Collections:USACE Collection

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