14 Apr 2020

PUBLICATION NOTICE: Numerical Sedimentation Investigation Mississippi River Cairo to Pilots Station

Report Number: MRG&P Report No. 30 Title: Numerical Sedimentation Investigation Mississippi River Cairo to Pilots Station By Ronald R. Copeland, Leslie Lombard, Roger A. Gaines Approved for Public Release; Distribution is Unlimited February 2020 Abstract:  A HEC-6T numerical model of the entire Lower Mississippi River between the end of Southwest Pass and the confluence of the Ohio River was developed. The model, which included over 1000 river miles, was calibrated to 1991-2002 measured data. The purpose of the numerical sedimentation model was to provide a tool to evaluate the long-term and system –wide effects of specific Mississippi River and Tributaries Project features. Model applications related to the effects of sediment diversions and the effects of dredging in the New Orleans District were demonstrated. The model demonstrated the effects of new constrictive works on the long-term and short-term river morphology. The model was used to test the effects of changes in upstream sediment inflow. The model’s ability to assess the effects of natural geomorphic changes, such as erosion of hard points, was demonstrated. Future application of this model to specific project sites should include the addition of more detailed geometry in the area of interest. 230 pages / 7.8 Mb

10 Apr 2020

Locks and Dam 14 Auxiliary Lock to Remain Closed

ROCK ISLAND, Illinois – Due to ongoing construction and concerns related to the spread of COVID-19, the Rock Island District will not be opening the auxiliary lock at Locks and Dam 14 in Pleasant Valley, Iowa, as scheduled on Memorial Day. The date of anticipated opening is unknown at this time.

3 Apr 2020

Corps of Engineers closes its Blackhawk Park due to high water

ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is temporarily closing its Blackhawk Park, located near De Soto, Wisconsin, today, April 3, due to high river levels. This will affect the day use areas and fishing access.

26 Mar 2020

Corps of Engineers begins Mississippi River habitat construction project

ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, has started the first phase of the McGregor Lake Habitat Rehabilitation and Enhancement Project to restore habitat within Pool 10 of the Upper Mississippi River.