City plans repairs to Lake Mallalieu Dam
The Hudson City Council voted July 18 to proceed with an estimated $60,000 worth of repairs to earthen embankments at the Lake Mallalieu Dam.
The city is hoping that St. Croix County, North Hudson and the town of Hudson will pick up $48,000 of the cost.
According to Wastewater Superintendent Jim Schreiber, the upper 25 feet of the embankments facing the river on either side of the dam have eroded in recent years.
Schreiber, whose job duties include looking after the dam, said the upper portions of the embankments were covered with turf for esthetic reasons when the embankments were last repaired in 1998.
The erosion occurs during periods of high water on the river, Schreiber reported to the council's Public Works Committee, which met shortly before the meeting of the full council.
The project will consist of restoring the embankment slopes, covering the slopes with a geotextile fabric, and then placing riprap on top of the fabric.
A breakdown of the estimated project costs prepared by BRA & Associates, the city's consulting engineers, shows $46,150 for construction and $13,850 for engineering and administration.
St. Croix County will be asked to pay half of the project costs, as it did the last time the dam, which creates Lake Mallalieu, was repaired. While the city oversees the dam, most of Lake Mallalieu lies outside of the city.
The city's projected share of the project costs would be $12,000 (20 percent), with the village of North Hudson also paying $12,000, and the town of Hudson paying $6,000 (10 percent).
The council vote authorized the city staff to prepare the project specifications and solicit construction bids from contractors.
Mallalieu water quality concerns
John Gostovich, president of the Lake Mallalieu Association, and lake resident Martin Best addressed the Public Works Committee concerning storm water discharges into the lake.
Best said last winter's drawdown of the lake had revealed large amounts of sediment deposited into the lake at city storm sewer outlets - in addition to debris that included a car engine and car axle.
The biggest deposit, Best said, was at the outlet draining the Swede Hollow neighborhood in the older part of city.
Best and Gostovich asked the council to consider undertaking a study to determine what storm sewers are contributing to lake sedimentation, along with ways to remedy the problem. They said the Wisconsin Department of Natural Resources provides grants to municipalities to fund storm water runoff control. They said that the county and village of North Hudson might share in the cost of the study.
The two reported being impressed with the measures River Falls has taken to control storm water run-off into the Kinnickinnic River.
Dennis Postler of BRA & Associates, the city's consulting engineering firm, said Hudson would soon be required by the federal government to do storm water mapping anyway, because it has passed the threshold of having 10,000 residents.
Council President Scot O'Malley indicated that the city staff would apply next spring for a DNR grant to partially fund a storm water study. O'Malley said the city would talk to the village of North Hudson and the town of Hudson about joining in the study.
In other business at its July 18 meeting, the council: