Lake Health & Permits
If you see something, say something.
Keep an eye out for invasive species, blue green algae, or other issues with the lake. Kindly pick up litter if you see any and remind neighbors or guests of tips to keep the watershed healthy. If you see anything of concern or have questions, please contact GLIA and the Board will convene on appropriate next steps.
Weed Control Permits
Midwest Aquacare spraying for shoreline weed/AIS control
- Below is the 2023 weed treatment form. Forms must be returned to Midwest Aqua Care and are due February 20th.
Download Weed Form
Do I send money with the forms?
Yes, send a check for the appropriate amount:
1 Spraying: Cost may vary each year – see MAC form.
2 Sprayings: Cost may vary each year – see MAC form.
(GLIA pays the permit fee of $40 for its members.)
Can I get help diagramming the treatment area?
If MAC has done the treatment in prior years and the information that MAC has is still correct, you can note “treat same as last year.” If you need help, reach out to the GLIA Board of Directors.
Do I need to sign the form in two places?
Yes, the top half is for MAC; the bottom half is for DNR.
Who can I contact with additional questions?
Email [email protected] or call 952-403-6879.
What weeds/invasive species should I watch for?
Gleason Lake has Curly Leaf Pondweed, Purple Loosestrife, and Coon Tail. MAPMS is a great resource for lake management education on weeds and invasive species. Below is one of their resource forms.
Watershed Management History
Gleason Lake Management Plans
Gleason Lake Subwatershed Plan [April 2007, 6MB]
Gleason Lake Management Plan [August 2003, 5MB]
Protecting Our Lake Guide
Minnehaha Creek Watershed Management Plan
View MCWD’s Watershed Management Plan [January 2018]
Surveys & Reports
Gleason Lake Test Results
Fish Survey Report
Aquatic Invertebrate Field Report
Aquatic Plant Surveys
Curly Leaf Pondweed
2022 Gleason Lake Curlyleaf Pondweed Treatment Map
Gleason Lake CLP Occurence April 9, 2016
Gleason Lake CLP Occurence June 9, 2014
Gleason Lake CLP Occurence May 9, 2014
Curly Leaf Pondweed, 2007-2011 (Powerpoint)
Evaluation of lake-wide, early-season herbicide treatments for controlling curlyleaf pondweed
2009 Eurasian Watermilfoil Map [1MB].
2007 Eurasian Watermilfoil Map [1MB]
No Eurasian Watermilfoil was located during the 2007 surveys. The site map depicts seven previously reoccurring EWM locations. These locations have all been treated numerous times for the control of EWM. Scattered plants did occur between points # 1 to #2 and between points #3 to #4. The original sites #3 and #4 were confirmed by the MN DNR in 1998.
Treatments & Practices
Gleason Lake is a small, shallow lake with a great deal of nutrients and vegetation. The lake is aerated in winter to maintain adequate oxygen levels for lake and fish health. Lakes as shallow as Gleason can only absorb oxygen through open water.
Gleason Lake’s aerator is typically turned on in December or January (ice must be 5-6” thick). Holes are drilled and stakes are set in ice.
“Thin Ice” signs are posted to mark the aeration area and thin ice notice is submitted to local newspaper.
The aerator is typically turned off in April after the ice goes out.
Aquathol K is a 40.3% Endothall liquid concentrate soluble in water used to treat a broad range of aquatic leafy plants. Aquathol K has a wide margin of tolerance for fish and other aquatic animals.