Accession Number:

ADA238906

Title:

Upper Mississippi River System Environmental Management Program, Definite Project Report with Integrated Environmental Assessment (R-7F), Lake Chautauqua, Rehabilitation and Enhancement, La Grange Pool, Illinois Waterway, River Miles 124-128, Mason County, Illinois. Technical Appendices

Descriptive Note:

Corporate Author:

ARMY ENGINEER DISTRICT ROCK ISLAND IL

Personal Author(s):

Report Date:

1991-05-01

Pagination or Media Count:

121.0

Abstract:

Climate and hydrology of the Lake Chautauqua area are described, and the design of the proposed water flow and flood control structures for the upper and lower unit of the lake are discussed. Table F-1 lists the appropriate monthly precipitation amounts. Water quality within Lake Chautauqua is primarily impacted by the deposition of sediment during periods when the Illinois River over tops the levees, and suspended sediments. The sedimentation process has occurred over several decades following the lakes impoundment. The Chautauqua National Wildlife Refuge is situated in Mason County in central Illinois and contains 4,200 acres of land and water within the Illinois River floodplains. A management tool was developed to evaluate the benefits and impacts of potential uplands and wetlands and to improve them as wildlife habitats. Pump stations in this area will serve to control discharge and drainage of lakes and waterways.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE