DREDGING

Dredging allows the Lake to be deepened, removes nutrient-loaded sediments, and helps reduce turbidity of the Lake bottom. The objective will be to deepen the average depth of Utah Lake by approximately three to six feet, shape the underwater topography (bathymetry) of the lake, and improve the temperature and circulation of water. Dredging will also increase the water-holding capacity of the Lake by an estimated 405,000 acre feet.

THE FOUR PRIMARY OBJECTIVES OF DREDGING

1.

Remove and encapsulate fine particulate from the top 8-12 inches of lake bottom.

2.

Remove nutrient-loaded sediments comprising 18-36 inches of lake bottom.

3.

Deepen the lake to reduce forces that can disturb the lake bottom.

4.

Change the lake bathymetry to improve circulation and cool the lake water.

HOW MUCH NEEDS TO BE DREDGED?

Our team has been working for the last six years on complex engineering and science to dredge Utah Lake. Dredging Utah Lake requires more than just simply removing three to five feet of lake sediment uniformly across the lake. The depth of dredging will vary in different parts of the lake based on data gleaned from core samples and on engineering design. Some areas may be dredged by as little as 18 inches, while other areas may be dredged deeper to create deeper-water channels.

1 Billion Cubic Yards

Our current engineering designs suggest that to deepen the lake to the desired levels, upwards of one billion cubic yards of material will be dredged from the bottom of Utah Lake as part of this project.

Our estimate is that to maintain the lake’s hydrology equilibrium it will take approximately 12-15 years to move this quantity of material.

BENEFICIAL USE

U.S. ARMY CORPS OF ENGINEERS NATIONAL DREDGING POLICY (ADOPTED JUNE 1995)

“The nation’s coastal, ocean, and freshwater resources are critical assets, which must be protected, conserved, and restored. These resources are equally important to the United States by providing numerous economic and environmental benefits…Consistent and integrated application of existing environmental statutes can protect the environment and can allow for sustainable economic growth…Dredged material is a resource, and environmentally sound beneficial use of dredged material for such projects as wetland creation, beach nourishment, and development projects must be encouraged” (U.S. Army Corps of Engineers, 2015, pp. 2-7, 8).

Learn more about how dredging improves water quality.

Water Quality

Learn more about how dredging will improve wind and wave action.

Wind & Waves

Learn more about how dredging allows for island creation

Island Creation

GET INVOLVED!

Hands-on volunteer service with our Save Utah Lake team is just a click away. Sign up and we will notify you as soon as a service opportunity comes up.

JOIN US!

GET INVOLVED!

Hands-on volunteer service with our Save Utah Lake team is just a click away. Sign up and we will notify you as soon as a service opportunity comes up.

JOIN US!