Storm Lake Dredging

Storm Lake Dredging Map_thumb.jpg

Time Line of Process

Mid 1990s
  • A diagnostic and feasibility study was conducted with one recommendation being to dredge the lake to improve water quality. Through public meetings and work by the DNR, a plan was developed to dredge part of Storm Lake.
Early 2000s
  • First spoil containment site was developed on the south side of the lake.
  • A plan was developed by a group of local citizens and the Lake Preservation Association (LPA) to monitor the watershed and stop siltation in the lake.
  • Dredging was done by the State of Iowa (DNR) which removed 1,320,000 cubic yards of silt from the west side of the lake.
  • Buena Vista County purchased a dredge and related equipment to allow for a local dredging operation
  • The Lake Improvement Commission (LIC) was formed by the City of Storm Lake, City of Lakeside, Buena Vista County, and the LPA to continue dredging operations of the lake.
  • The LIC began dredging and utilized the spoil site on the south side of Storm Lake for the first three years of the local project.
  • City of Storm Lake purchased land to the east of the Sunrise Pointe Golf Course to construct a second spoil containment facility.

  • The local dredging operations began utilizing the east spoil site in 2005 and it is currently in use today.
  • The LIC purchased a booster pump to allow dredging operations to extend out further into the lake.
2003 - Current
  • The LIC has dredged each year. The continuation of the dredging is dependent on spoil site space and funding.
  • Work was completed on the Little Storm Lake restoration project which included construction of dikes, water control structures, and a pump station to allow for water level control to improve the water quality of the water entering Storm Lake.
  • There has been 6,205,000 cubic yards of sediment removed to date.
Final Goals
  • The desire is for the continued improvement in the water quality, to be at or close to the water clarity goal of 28”.

  • Dredging operations usually run from April to October operating two daily 10 hour shifts, Monday through Friday.
  • A new spoil site adjacent to the east spoil site was completed in the fall of 2013 and will provide additional storage for an additional three years of dredging. The new site will be used beginning in the 2014 season.

Siltation-The pollution of the water from silt and other fine sand materials. These materials get caught up in moving water and are deposited as sediment.

Spoil Containment Site-Area to maintain and keep the dredged material that is removed from the lake, often referred to as “spoil.”


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