University of Illinois Urbana-Champaign

Sedimentation in Quincy Bay and Potential Remedial Measures

Adams, J. Rodger; Bhowmik, Nani G.; Bogner, William C.; Dillon, Frank S.

Content Files
ISWSRI-108.pdf

Permalink

https://hdl.handle.net/2142/77883

Description

Title
Sedimentation in Quincy Bay and Potential Remedial Measures
Author(s)
  • Adams, J. Rodger
  • Bhowmik, Nani G.
  • Bogner, William C.
  • Dillon, Frank S.
Issue Date
1987
Keyword(s)
  • Floods
  • Mississippi River
  • Quincy Bay
  • rehabilitation
  • sediment budgets
  • sediment transport
  • sedimentation
  • suspended sediment
Date of Ingest
2015-06-03T18:25:00Z
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.
Publisher
Illinois State Water Survey
Series/Report Name or Number
Report of Investigation (Illinois State Water Survey) RI-108
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/77883
Copyright and License 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.

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Reports of Investigation - Illinois State Water Survey PRIMARY