Sanitary District 1 Cedar Lake



Phone: 920-894-2573

Term expires 2027




Phone: 920-946-2558

Term expires 2029




Phone: 262-903-9269

Term expires 2025




50 Years of Service Award

Phone: 920-894-7074

Term expires 2050

This web page is being updated by Scott Otterson. Any corrections, revisions or suggestions can /be emailed to Scott. Site updated  5/30/23



Town of Schleswig Sanitary District #1, Cedar Lake, will conduct an Informational Meeting on Sunday
June 11th at 9 a.m. at the Town Hall located in Rockville. See Town Meetings and Agenda under Sanitary District 1 for more details.

Larry Bonde, Chair of Manitowoc County for the Wisconsin Conservation Congress, will explain what the Conservation Congress is all about.

Jeff Meessmann from Presque Isle, Vilas will present a Power Point presentation he gave at the Wisconsin Lakes Convention in April titled,” The Impacts of Inadequate Wake Surfing Regulations On Our Lakes.”

Local DNR, Recreation Warden, Marcus Medina, will also give a presentation.



The next Sanitary District Meeting has been set for Monday June 12th, 2023 at 6 pm at the Town Hall. 

Wild Celery Weed growth and some spots of Eurasian Water Milfoil have caused additional weed harvesting in Cedar Bay. The bay has soft bottom soils that can easily be disrupted with some boating activities. It is requested that fast boating be enjoyed safely in other areas of the lake while we attempt to control the weeds in this Bay.


When the Slow No Wake is removed, high water levels still exist and many piers, docks, boat lifts and phosphorus laden shore line soils will still be at risk. It is requested that  fast boating occur safely near the center of the lake in the counter clockwise direction. Erosion of the shore washing Phosphorus into the lake along with the inability to restore the lost shoreline are key concerns. Past requests for fast boating near the center of the lake have been successful during similar lake levels.

The WDNR has prepared a response to the Natural Resources Board that discusses the WDNR's review of waves created by boats the following is a link to the response;   NRB Report 

A new boat pier has been installed, parking lot and landing paving, and lighting.  New signage notifying the need to check the parking lot for open parking spots before launching was installed.

No Parking Signs have been posted on the roads near the boat landing to reduce the roadside parking hazards. Please take note and notify friends that there will be a $100 fine and towing if they are in violation.

Natural prairie plantings have been added by the County to the Parking lot drainage area.


Safe boating starts at the dock, continues out on the water, and ends if followed with happy memories.


Sanitary District 1 (Cedar Lake) received a 2016 WDNR grant for 35% of the replacement cost of our ten year old Weed Harvester, Trailer, and Conveyor. The new harvester is currently in operation on the lake.

Part of the process was to provide an update to our Aquatic Plant Management Plan. We applied and received a 75% WDNR Grant for the update which included a lake survey of it's aquatic plants. The completed plan was added as a link at the end of the web page.

Weed Harvesting Requests can be accommodated by calling Mike Strebe

Per aquatic plant harvesting permit requirements, "weed" harvesting cannot be harvested by our equipment in areas that are less than 5 feet deep so don't ask the harvester operator to cut in shallow water because he can't by state permit requirements. New harvester operators are being trained. Due to wind conditions and inexperience on the machine, they may not be able to accommodate all cutting requests. Native plants close to shore minimize the ability for Eurasian Water Milfoil to root so removal of all plants on your shore may contribute to an invasive problem.

Thank you Roger for 50 years of service and friendship to the lake community that you are so much a part of

 Muskrats have caused damage to shoreland, boat wiring and seating, and even automobile wiring of vehicles parked near the lake. A muskrat trapper has been harvesting the animals on Cedar Lake for over 30 years. has retiered and a replacement trapped during the 2022 season. If you have any sighting of nuisance muskrats, notify Scott Otterson so that he may notify the trapper of their location.

The following link is to a chart showing some of the past trapping results. muskrat trapping records; muskrat-trapping2022-pdf

The 2017 trapping yielded 188. 2018 yielded 99. 2019 yielded 83. 2020 yielded 80. 2021 yielded 83. 2022 yielded 41.

Herbicide treatment occurred on Friday July 9th, 2021. The treatment was only in the North Bay/Cedar Bay due to WDNR permit decision not  to treat other dense areas requested to be treated.

EWM herbicide treatment in areas identified in 2021 but not allowed by the DNR were approved in the 2022 request and treated on June 27th, 2022. Both of the 2021 and 2022 treatments have been highly successful.

On May 25, 2011 a sighting of EWM prompted the Sanitary District to contact the DNR to determine the proper immediate response. The Sanitary District obtained a Permit to Apply Aquatic Herbicide and the plants were both hand pulled and treated with herbicide. All lake users should become familiar with the identification of the plant and report any sightings to the District representatives. 2012 sightings prompted the Sanitary District to contact the DNR for additional eradication efforts. 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 and 2022

Unfortunately, all major motorized lakes in Manitowoc County now have EWM.

Several EWM sites were found around the lake during late summer of 2017. A  request for a DNR grant to fund a removal program was made and received for a $10,000 grant where the DNR pays $7,500 and the Sanitary District pays $2,500. The Cedar Lake Improvement Association generously donated $1,000. The removal program called DASH required a suction pontoon barge and a diver to use a suction hose to suck the EWM plant and roots from the lake bottom. The divers noted several previously unknown locations of EWM and the plants were removed. Unfortunately, four large areas had well established growth and required chemical treatment.

The DASH program has been effective in early stages of EWM as seen on Cedar Lake. 

EWM can reestablish itself from small pieces of the original plant. Because of this, any plants on the shore, trailer, anchor, or boat should be removed and composted or placed on shore to dry out.

The wildflowers located near the storage building bloomed and provided homes for many interesting butterflies. Nice work volunteers!

Town of Schleswig Sanitary District 1 - Cedar Lake Maintenance Bldg. Garden
Current Notes

A report of Swimmers Itch has been received in the past on this and other lakes. It is parasite that develops in snails or waterfowl but dies when it penetrates human skin. It is most commonly found nearshore, in shallow water, and in stagnant water. It's best to swim in deeper waters, rinse and dry after swimming and use antibacterial soap.

A good website with information on Swimmers Itch is

Eastern Milk Snake
Eastern Milk Snake

Eastern Milk Snake in Scott's backyard June 15, 2010 Non Poisonous, found around stone foundations, eats insects, slugs, small rodents, frogs, small snakes. Good for your garden so let them go or call Scott to remove it to a better location. (Legend has it that these snakes often found around barns drank the milk from the cows....sorry only a legend)

PS There are no poisonous snakes in this area of Wisconsin but any snake can bite so don't get over excited about a snake or snake bite around here. Send Scott any interesting nature photos.

Lake Watch - Police Reports and Concerned Property Owners Comments

Kiel and surrounding communities have noted break-ins to unlocked garages and cars. None reported on the lake yet.

Contact Ken Schuler Constable at 920-629-6500 for information on suspicious activity or lake activity violations or dial 911 for emergency assistance.

 Nature Watch - Send Scott any interesting nature sightings, photos for posting 


On 5/26/22, a secchi disk reading was 14.8 ft.. We had a good water quality year last year so hopefully we'll have another. Early  November secchi disk readings before ice forming were at 21 feet. An early May readind was still 21.1 feet.

Under ideal conditions on April 4, 2021 a new record water clarity reading of 26.0 feet of depth using the Secchi disc method occurred. It is anticipated that the clarity will decrease naturally during the summer as the sun promotes the plant and algae growth. These readings have been recorded over several years and can be found on the below mentioned Cedar Lake Monitoring Data Link.

On May 19th, 2023 the Lake level was 3.5 inches above the invert of the outflow culvert. Levels have continued to be above the Ordinary High Water Mark. Slow no wake has not been implemented and it is hopeful that boaters will fast boat near the center of the lake. The increased boating/wave action adds to the sediment suspension and erosion so please fast boat as far away from the shores as safe and practical. (The smaller the waves at the shoreline, the more likely your neighbors will support fast boating)

Fishermen and Fisherwomen

During 2022 the WDNR set nets and performed a lake survey. Results will be added to this site as soon as they are received.

DNR requires a wearable life preserver on kayaks, paddle boards, and paddle boats (a throwable is not good enough). A $200 ticket issued by the County Deputy on 4th of July 2011 weekend drove the point home to 3 paddleboaters.

2013 jan 026

Two thousand 6-inch perch were stocked in March 2013 and two thousand 6-in walleyes in December 2014. Hopefully they will contribute to an improved fishery. As always, catch and release is recommended for the walleye as they are an endangered resource on Cedar Lake and it is better to return a surviving walleye and catch many more of its offspring.

See the informational links at the end of this web page for more DNR fish Survey information.

Any photos of catch and released fish or measurements will be posted. Contact Scott.

Cedar Lake Levels Compared To Three Similar Lakes Showing Preciptation Cycles and Ability of Cedar Lake's Well/Pumping to Control the Lake Level (CLICK ON THIS TO SEE GRAPH OF LALE LEVELS)

A Second High Water Control 18-inch Culvert Installation across Woodside Lane July 2009.
It was placed at same Ordinary High Water Mark elevation as the older existing culvert per WDNR requirements.

New High Water Control 18-inch Culvert Installation across Woodside Lane July 2009
Placed at same elevation as the old culvert per WDNR requirements.
New High Water Control 18-inch Culvert Installation across Woodside Lane July 2009 Placed at same elevation as the old culvert per WDNR requirements.
flowing culverts
Culverts in action July23, 2010