US Army Corps of Engineers
St. Paul District Website

Pigs Eye Islands CAP 204 Beneficial Use of Dredge Material, St. Paul, Minnesota

U.S. Army Corps of Engineers, St. Paul District
Published Feb. 26, 2015
Updated: March 8, 2021


Feasibility Study Report with integrated Environmental Assessment - May 2018

Report Appendices


The project will beneficially utilize dredge material to create islands that will provide a variety of habitat for fish and wildlife.


Pigs Eye Lake is located in Ramsey County, just east of downtown St. Paul, Minnesota, in upper Pool 2 of the Mississippi River. Due to the lake’s close proximity to the Mississippi River, the lake water level is controlled by the level of the river. The lake is located in the Mississippi River Bottomlands Subwatershed.


The lake is a valuable wildlife habitat resource and is utilized by a variety of birds and mammals. However, due to high turbidity and phosphorus levels the lake is classified as hypereutrophic. Sedimentation, low transparency and nutrient loading have caused the water quality and habitat suitability in the lake to be poor. Additional factors such as wind fetch and high carp populations are also impacting the water quality and habitat suitability.

The project will utilize clean dredged material from Pool 2 to improve the ecosystem in Pigs Eye Lake. The project includes the construction of six islands of various sizes within the lake, creating a range of habitat types for fish and wildlife. These islands will also reduce wind and wave action, improving vegetation in the lake, creating thermal shelter for waterfowl and protecting further shoreline erosion.


Ramsey County Parks & Recreation requested a federal interest study on October 17, 2012. The U.S. Army Corps of Engineers received a federal interest determination on May 14, 2015. The feasibility study was initiated on June 17, 2015 and completed in August 2018.

A project-partnership agreement was executed on June 7, 2019. The design and implementation phase of the project is underway, and it is anticipated a construction contract will be awarded in 2021. Estimated project completion date is October 2024.


Section 204 of the Water Resources Development Act of 1992, as amended.


The feasibility study and environmental assessment were prepared at full federal expense. The design and implementation phase of the project is cost shared at 65 percent federal and 35 percent non-federal with a total federal maximum contribution not to exceed $10 million.

Federal Estimate                                         $8,400,000

Non-Federal Estimate                                $4,200,000

Total Project Cost                                     $12,600,000


Federal Funds Allocated to Date              $7,900,000