Informational Meeting About Starry Stonewort – October 12 from 1-3pm at the Delafield Town Hall

There will be an informational meeting on October 12th from 1 pm to 3 pm at the Delafield Town Hall: W302N1254 Maple Avenue, Delafield, WI 53018. The meeting is primarily for the residents of the Nemahbin Lakes, Pewaukee Lake, and Okauchee Lake, but all are welcome to attend. There will be a presentation going over the ecology and identification of Starry Stonewort, as well as current control efforts, results, and what the next steps are in regards to the management of this species. The Town of Delafield has requested that in place of payment for the venue that all attendees bring an item to donate to the local food pantry. The following items have been requested: Canned soups, canned vegetables, canned meat, canned fruit.
Please visit the Waukesha County AIS webpage at: to learn the latest information about this species!

A Special Announcement From AIS Coordinator, Cassie Taplin About Starry Stonewort

As you may already be aware, Starry Stonewort, an aggressive aquatic invasive plant, has recently been found in area lakes, including Okauchee Lake, Pewaukee Lake, and Lower Nemahbin. The stands of Starry Stonewort have been monitored and a series of surveys have begun in working toward finding the correct treatment option for the lakes. Identification information and survey/treatment options are included in the full announcement located on the Waukesha County AIS webpage at:

Starry Stonewort Found In Okauchee Lake – Please Clean Your Boat, Trailers and Watercraft!

Starry Stonewort is an aggressive aquatic invasive plant that forms dense mats of weeds and chokes out native species. It is spread by the “stars” that grow on the plant. Small fragments of the plant containing a starry bulbil can begin a new stand. These fragments can easily be tucked away in live wells, trailers and any water remaining on a watercraft as a boater moves from lake to lake. Please exercise caution and common sense in moving about the lake to avoid any treatment activity going on in the lake and upon removal of watercraft for the season. More information will be posted to this website as it becomes available. Detailed information about the Starry Stonewort plant is available on the “Reports” page.

Starry Stonewort Found In Okauchee Lake – PLEASE BE AWARE!

At the August 26, 2019 Annual Meeting OLMD residents were made aware that two stands of the aquatic invasive species, Starry Stonewort, were found in Okauchee Lake. One stand is near the bridge by Foolery’s. A second stand was found near the boat launch at the Golden Mast. OLMD Commissioners took action to begin the required DNR permitting process to aggressively treat Starry Stonewort in the months to come. Please be aware of this situation and clean your boats, trailers and all watercraft upon exiting the lake for the winter season. If you see someone putting their boat in at the launch sites, please notify them that Starry Stonewort is present so that they can make an informed decision on whether to launch on the lake. More information will be posted to this website as it becomes available.

Would You Like A Bountiful Garden? OLMD Lake Weeds Can Help!

Are you interested in receiving a small dumptruck load of lake weeds? They make great natural garden fertilizer! The OLMD weed dump sites are filling and additional dump sites are needed. For this reason, the OLMD is offering lake weeds free of charge delivered to you. The amount of weeds delivered would be enough for a medium-sized garden and not intended for small garden plots. If you are interested, or if you know of someone who might be interested in taking some lake weeds for their farm land, please contact the OLMD office at 920-966-0286 and leave a message for Gary with your name, address and best time to return your call. Thank you!

Please Leave Yellow Flags On Your Shoreline – 6-14-19

As many of you are aware, yellow flags were recently placed on the shoreline in areas where chemical weed application had taken place. If you are able, please leave the yellow flags along your shoreline as long as possible. This tells the cutters where they are allowed to cut and where cutting is prohibited due to the weed application. If you have any questions, please call the OLMD office at 262-966-0286. Thank you!

Do You Know What Clean, Remove, Drain and Never Move Stands For? You Should!

As we are quickly approaching the warm summer months, more and more eager anglers and boaters are prepping to get out on the Wisconsin’s beautiful lakes and rivers. With high boat traffic comes the risk of boaters spreading aquatic invasive species! It is important for boaters to remember to make sure their boat and gear is clean before entering a water body. Remember: Clean, Remove, Drain, Never Move!
• CLEAN your boat, trailer & gear
• REMOVE all attached aquatic plants and animals.
• DRAIN all water from boats, vehicles, and equipment, including livewells and buckets containing fish.
• NEVER MOVE plants or live fish away from a waterbody.

Do You Have Any Historic Okauchee Lake Information Or Memoribilia To Share?

The OLMD is seeking historic pictures or information about life in and around Okauchee Lake. Anyone with information to share should contact the OLMD via email at If photos are provided, please provide them in JPEG format in regular size. Thank you!

Please check out the photo gallery! Richard Kessler shared some historic postcards of Okauchee Lake activity from 1972 and 1974! So cool! Thank you Richard!!

Things That Float: Rafts, Buoys, and Other Markers

Okauchee Lake is home to about 1,000 riparian owners, and enjoyed by lakeshore owners, their friends, and hundreds of guests each week who launch their boats at various launch sites to enjoy the lake. Understandably, this creates questions about rules and regulations, as well as a need for good old-fashioned courtesy. One question heard often is where people can place their floating docks and mooring buoys?
Mooring buoys may be placed within 150 feet of shore without a state permit, as long as they do not affect public rights (fish and wildlife habitat, navigation, etc.) or other riparian owners. Having a buoy further than 150 feet from shore will force the owner to apply for a permit.
Only riparian owners may place swim rafts or similar structures in the water and again, the rafts must not interfere with the rights of other property owners or with the rights of the public to use navigable waters. Any swim raft or water trampoline must be placed within 200 feet of shore, and all swimming rafts should be well marked in both day and night to warn boaters of possible hazards. The rafts should be no more than 38 inches high, and no more than 200 square feet in surface area. Water trampolines, generally round, are limited to a 15 foot diameter.
Generally, while operating a motor boat on any lake, Slow-No-Wake speed is required within 100 feet of a raft, pier or buoy restricted area and lakeshore. This rule is extended to 200 feet from the lakeshore for a personal watercraft.
Riparian owners should also be aware that they may not place such Slow-No-Wake buoys without first having received an approval from the municipality and the DNR. The DNR website has information on applying to place such markers.
The Okauchee Lake Management District is not a law enforcement agency, but urges all of our riparian owners and guests to follow the lake regulations and practice common courtesy while using our wonderful lake. This applies to placement of your piers, buoys and rafts, and operation of your boat or other watercraft. Be aware of the noise levels of the boats, whether from the engines or sounds systems, and how we greet and treat one another on the lakes. Let’s make this a safe summer, full of fun, family and friendship!