Wonder Lake Dredging Project — 2017
Wonder Lake Dredging Project — 2017
Wonder Lake Dredging Project — 2017
Wonder Lake Dredging Project — 2017

A couple of items to take note of:

1. The dredge and the in-lake booster vessels will be marked by red lights.

3. Due to the presence of the dredging equipment, areas marked as a “no-wake” area, are subject to Wonder Lake Marine Patrol enforcement.

4. The remainder of the sediment pipeline will be marked with red marker buoys. Extreme caution should be used when operating watercraft anywhere nearby.

5. The designated crossing of the sediment pipeline will be marked with buoys featuring blue lights. The pipeline crossing has been designated as “no-wake” and propeller clearance conditions should be checked each time a crossing is made.


Lake user’s are reminded of the presence of dredge pipeline in West Bay and South Bay, as well as the section of floating pipeline between Wickline Island and the Highland Shores beach, and are strongly encouraged to avoid these areas of the lake. A map depicting the approximate winter 2017 / 2018 location of the dredge pipeline is shown below. Lake user’s are also reminded of the presence of the rip-rap “collars” around Wickline and O’Brien Shoals. Lake users should be aware of the potential of floating debris at all times, and particularly after heavy rainfall events. If in-lake debris is observed, Email: office@wlmpoa.org or call 815-653-1000. The Wonder Lake Police Department will be checking for current MPOA decals, download 2018 decal form (PDF).


WELCOME to the Master Property Owners Association (MPOA) in Wonder Lake, Illinois 60097. The MPOA owns and manages Wonder Lake, a private 830 acre recreational lake located northwest of Chicago. The MPOA office is located at 7602 Hancock Drive, at the northwest corner of Hancock Drive and E. Wonder Lake Road, roughly two miles north of IL Route 120. Do you have a question about the Lake, or need information about the Wonder Lake area? E-mail: office@wlmpoa.org, Phone: (815) 653-1000


•  NEW  LATEST UPDATE → Lake Managers Report

• Read about the History of Wonder Lake's Restoration
• EROSION CONTROL BARRIERS: Read 2012 Notice to Lake Users


cautionAs you may have noticed, over the past few years, Wonder Lake has experienced a large increase in the population of Double-Crested Cormorants. The presence of these birds in large numbers is believed to have an impact on fish populations. Equally as important is that Cormorants prefer to roost and build nests on islands. Over time, the “droppings” from the roosting Cormorants can build up to the point where they can kill off the trees they roost in.

This is a particular concern as recently over 250 Cormorants have been observed on Strom Island in Wonder Lake, starting to build nests in the large oaks trees found there. With the on-going restoration work being done on Strom Island, it would be a shame to lose these large oaks.

Because Cormorants are a federally protected waterfowl, the MPOA and Wonder Lake Sportsman’s Club have been working with the Illinois Department of Natural Resources on implementing legal means of harassing the Cormorants, to discourage them from roosting and building nests. Often, boat traffic in the vicinity of Strom Island is enough to get the Cormorants to take flight. The challenge has been when boat traffic slows down and the Cormorants come back to the island for the night.

As such, the WLSC will be operating propane cannon in the afternoon and evening to try to discourage the Cormorants. This is a commonly used technique at airports and orchards. This cannon will randomly make a loud noise to scare the Cormorants, but does not fire any kind of projectile or harm the Cormorants. This email is to inform you that you may periodically be hearing something like fireworks going off on Strom Island. The Wonder Lake Police Department, Wonder Lake Fire Department, and the McHenry County Sheriff are all aware of this effort.

We appreciate your cooperation in helping us manage and protect Wonder Lake.


You can take boat safety classes online, at anytime: Boater Exam.com, and Boat-Ed.com are fast and easy and certification cost is $29.95. Persons at least 12 years of age and less than 18 years, without an Adult are required to have a certificate.


Lake users are reminded that MPOA Lake Use Decals MUST be permanently affixed to the watercraft / snowmobile / ATV  to which they are registered, and that they are NOT transferable. The Wonder Lake Police Department Marine Patrol is provided with a list of all MPOA Decal registrants, and the specific type and description of the unit each decal number was issued to. Failure to have your MPOA decal permanently affixed is a ticketable offense. 2018 Decal Form

  • Zero Horsepower (canoe,kayak,rowboat,pedal boat) $10.00
  • 1-39 Horsepower $20.00
  • Over 40 Horsepower and ALL PWC $40.00
  • Winter- $5.00



• Senate Bill 3434 allows for the seizure of a watercraft used in the commission of certain offenses related to operating under the influence. The new rules bring penalties for boating under the influence more in line with those for operating a motor vehicle while impaired by drugs or alcohol. 

• Senate Bill 3433 requires all persons born after Jan. 1, 1998 to take and pass a boating safety course validated by the Illinois Department of Natural Resources and hold a valid boating safety certificate before they can operate a motorboat with an engine over 10 horsepower.

• Senate Bill 2731, mandates that the operator of any watercraft that is towing a person, such as a water skier or tuber, must display a bright orange flag measuring not less than 12 inches per side. The flag must be displayed from the time the person to be towed leaves the boat until that person returns to the boat at the conclusion of the activity. 
Under the law, flying the flag for purposes other than towing is prohibited, so be sure to only display the flag when towing.

Pipeline position