MUSKEGO — Concerns surround the state Department of Natural Resources' proposal to do a temporary draw down of Little Muskego Lake to destroy invasive weeds.
The Muskego public works committee will take up the matter Monday, Aug. 21. If the plan wins a favorable recommendation, the common council could could vote on it as early as Aug. 22.
The 7-foot draw down is proposed so that portions of the lake bottom can be exposed and invasive lake weeds, especially starry stonewort can be frozen out by frigid winter temperatures.
The proposed draw down is slated to start Sept. 5 and completed by Oct. 1, before the lake ices over. The proposed draw down would be about four- to six-inches per day. Spring thaw and rain would restore lake levels to normal.
However, some of those living on lakes downstream of the draw down have expressed worries that their lakes won't have enough time to drain sufficiently before ice forms, exposing shorelines to damage.
The water would flow from Little Muskego Lake into Big Muskego Lake and then into Wind Lake before draining into the Fox River.
Concern also has been raised about whether too much sediment would be carried into those downstream lakes. Water from the very bottom of the lake, which is most likely to carry sediment, would be involved in the proposed draw down.
The 12-foot high dam creating Little Muskego Lake is owned and operated by the city of Muskego.