Hurricane Island DMMP Report and Environmental Assessment

Rock Island District
Published Oct. 1, 2021
Dredge Material Placement Site at Hurricane Island

Dredge Material Placement Site at Hurricane Island


Pool 11, Dubuque County, Iowa, and Grant County, Wisconsin, Upper Mississippi River, River Miles 608-591


The report outlines the District’s plan to maintain the Mississippi River 9-foot navigation channel by dredging material from the channel and placing it on a small island near the channel.


The placement site, or “Bathtub” is a temporary placement site. After 20 years the District would remove the dredged material in the Bathtub and relocate it to a permanent upland farm field/quarry site in Wisconsin. The report includes a Finding of No Significant Impact (FONSI), addressing the proposed action over a 40-year life (2 cycles of using the Bathtub).

The U.S. Army Corps of Engineers, Rock Island District completed a Dredged Material Management Program Report and Environmental Assessment (EA) titled Upper Mississippi River Dredged Material Management Plan with integrated Environmental Assessment, Site Plan for the Hurricane Island Reach, Pool 11, Dubuque County, Iowa and Grant County, WI, Upper Mississippi River, River Miles 608-591, dated April 2018.

Additional Information

OM – Operations and Maintenance
Rivers and Harbors Acts of 1927, 1930, and 1935 in accordance with the Section 404 CWA & 33CFR, Parts 335-338

Summarized Project Costs

Estimated Federal Cost


Estimated Non-Federal Cost


Estimated Total Project Cost


Allocations Prior to FY 2022


FY 2021 Allocation


FY 2022 Allocation


FY 2022 President’s Budget


FY 2022 Total Capability



Major Work Item Prior Fiscal Year

FY 2021:  The project initiated construction of the “Bathtub” site, as conditions allowed, and in alignment with chronic dredging needs required to maintain the 9-foot navigation channel in the District.

Major Work Item Current Year

FY 2022: Work will continue on construction of the “Bathtub” site in conjunction with the district-wide dredging mission.