DNR hosts open house about ways to improve water quality of Big - KTIV News 4 Sioux City IA: News, Weather and Sports

DNR hosts open house about ways to improve water quality of Big Spirit Lake


SPIRIT LAKE, Iowa (KTIV)- The Department of Natural Resources is working on a project to improve the water quality of Big Spirit Lake.

Tuesday night, the Spirit Lake Protective Association hosted an open house to inform the public about its plans to improve Big Spirit. Marble and West Hottes Lakes feed into Big Spirit, but the quality of the water at those two shallow lakes is being compromised by Common Carp, which stir up the sediment at the bottom of the lake as they spawn.

The DNR will eliminate the carp from Marble and West Hottes Lakes by simulating drought conditions, which will compact sediment, germinate plant life and bring water down to a level where the fish will not be able to survive. "Because of increased water that comes into these systems, because of some exotic fish species, they just aren't functioning the way they had before," said Iowa DNR ecologist Mike Hawkins. "This project will really help to push those lakes into that clear water phase."

The survey and design phases of the project are done. The construction phase is set to get underway in the fall and early winter.

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