Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/48257
Title: Ecological Model to Evaluate Borrow Areas in the Lower Mississippi River
Authors: Killgore, K. Jack
Hoover, Jan Jeffrey, 1954-
Oliver, Amanda J. M.
Slack, William Todd
Katzenmeyer, Alan W.
Keywords: Construction
Environmental design
Environmental impacts
Fisheries
Levees
Multiple regression
Flood control
Restoration ecology
Ecology--Mathematical models
Publisher: United States. Army. Corps of Engineers. Mississippi Valley Division.
United States. Mississippi River Commission.
Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: MRG&P Report (Mississippi River Geomorphology and Potamology Program (U.S.)) ; no. MRG&P Report No. 46
Abstract: An aquatic analysis of constructing borrow areas adjacent to the main line levees in the Lower Mississippi River was conducted as part of an Environmental Impact Statement for upgrading the levee system. A Habitat Suitability Index (HSI) regression model based on field collections was developed to predict fish species richness as a function of the morphometry and water quality of borrow areas. The HSI score was multiplied by acres of borrow areas created during construction to obtain habitat units (HUs) for each alternative indicating a substantial gain of fishery habitat in the floodplain. Environmental features identified by the model to increase fish species richness and overall habitat heterogeneity include the shape of the pit (e.g., bowl-shaped with deep water rather than long rectangular with shallower water), the availability of littoral areas for fish spawning and rearing, using best management practices such as tree screens and bank stabilization to lower turbidity, adding islands, and creating sinuous shorelines. The project results in an overall gain in aquatic habitat by creating permanent or semi-permanent water bodies on the floodplain that our research indicates may be occupied by at least 75 species of fish contributing to the overall biodiversity of the lower Mississippi River.
Description: MRG&P Report
Gov't Doc #: MRG&P Report No. 46
Rights: Approved for Public Release; Distribution is Unlimited
URI: https://hdl.handle.net/11681/48257
http://dx.doi.org/10.21079/11681/48257
Appears in Collections:MRG&P Report

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