The U.S. Army Corps of Engineers, St. Louis District, conducted a sedimentation improvement study of the Mississ
ippi River at Moro Chute from River Mile (RM) 125.00 to RM 117.00. This study was funded by the Avoid and Minimize (A&M) Program. The objective of the model study was to produce a report that outlined the results of an analysis of various river engineering measures, intended for the development of side channel habitat and to enhance the environmental diversity along the left descending bank (LDB) of Moro Island without negatively affecting the navigation channel.
The purpose of this study was to find a solution to enhance the environmental diversity in the Moro Island Complex and produce a report that communicates the results of the Hydraulic Sediment Response (HSR) model study.
The goals of this study were to:
- Investigate and provide analysis on the existing flow mechanics causing the lack of diversity.
- Evaluate a variety of remedial measures utilizing an HSR model with the objective of identifying the most effective and economical plan to create a more diverse habitat in and around Moro Chute. In order to determine the best alternative, 3 criteria were used to evaluate each alternative.
- The alternative should enhance the environmental diversity of Moro Chute and the sandbar on the south western side of Moro Island.
- The alternative should maintain the navigation channel requirements of at least 12 foot depth and 300 foot of width.
- Maintain a side channel that can provide connectivity between RM 122.70 and RM 120.00.
- Communicate to other engineers, river industry personnel, and environmental agency personnel the results of the HSR model tests and the plans for improvement.