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ISWS Report of Investigation RI-108PDF

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Title:Sedimentation in Quincy Bay and Potential Remedial Measures
Author(s):Adams, J. Rodger; Bhowmik, Nani G.; Bogner, William C.; Dillon, Frank S.
Subject(s):Floods
Mississippi River
Quincy Bay
rehabilitation
sediment budgets
sediment transport
sedimentation
suspended sediment
Abstract:A lake sedimentation survey determined that about 72% of the volume of Quincy Bay has been filled with sediment deposits. Remaining water depths range from 0.5 foot in Long Lake and Triangle Lake to 5.6 feet in the lower main bay. Measurements of water and sediment fluxes into the bay showed that tributaries contribute 1% of the water and 8% of the sediment, the access channel contributes 52% of the water and 22% of the sediment, and flood overflows from the Mississippi River contribute 47% of the water and 70% of the sediment The average annual sediment inflow is 1,096,000 tons, of which about 245,000 tons, or 22.4%, is deposited in the bay. A number of possible remedial measures, and comments on them from interested agencies and individuals, are presented and discussed in the report. Recommended actions include: 1) rehabilitation of Triangle Lake, 2) selective dredging for boating and fish habitat, 3) implementation of soil conservation practices on tributary watersheds, and 4) further analysis of closing the access channel and diverting all but the largest floods from most of the bay area.
Issue Date:1987
Publisher:Illinois State Water Survey
Citation Info:Adams, J. Rodger, Nani G. Bhowmik, William C. Bogner, and Frank S. Dillon. Sedimentation in Quincy Bay and Potential Remedial Measures. Illinois State Water Survey, Champaign, Report of Investigation 108, 1987.
Series/Report:Report of Investigation (Illinois State Water Survey) RI-108
Genre:Technical Report
Type:Text
Language:English
URI:http://hdl.handle.net/2142/77883
Publication Status:published
Peer Reviewed:peer reviewed
Rights Information:Copyright, University of Illinois Board of Trustees. All rights reserved. This document is a product of the Illinois State Water Survey, and has been selected and made available by the Illinois State Water Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended for research and educational use, and proper attribution is requested.
Date Available in IDEALS:2015-06-03


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