Management Plans & Reports

Weed Control

Midwest Aquacare spraying for weedline shore control

Do we send money with the Midwest Aquacare (MAC) forms?

Yes, send a check for $179 for one treatment / $ 358 for two treatments + $35 if non GLIA member
(If a current GLIA member, then we will pay MAC/DNR permit fee of $35.)

If I have problems with diagramming the treatment area can I get some help?

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."

Do I need to sign the form in two places?

Yes, the top half is for MAC; the bottom half is for DNR.

Additional Questions: or (952) 403-6879.


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 Aeration Notes:

Lake Condition and Lake Access

There is no public access. Our only access to Gleason is through private property which GLIA maintains due to gravel washouts each year; we request $300 for use of the landing and ramp maintenance. 24 hour notice and approval for ramp access is required prior to using the ramp; it is kept chained and someone will open access and check for invasives. If your boat has been on another lake, the boat should cleaned and dry out at least 7 days before entering Gleason Lake.

Watershed Management History

2004-2013 Gleason Lake Test Results (MCWD)

Gleason Lake Management Plans

Subwatershed Plan cover  Management Plan cover

Protecting Our Lake Guide

Fish Survey Report

Aquatic Invertebrate Field Report

Aquatic Plant Surveys


Curly Leaf Pondweed

vegetationEvaluation of Lake-Wide, Early-Season Herbicide Treatments for Controlling Invasive Curlyleaf Pondweed (Potamogeton Crispus) in Minnesota Lakes

James A. Johnson, Water Resources Science MS Defense, Limnology and Oceanography Track
ADVISOR: Ray Newman, Fisheries, Wildlife and Conservation Biology

Curlyleaf pondweed (Potamogeton crispus L.) is an invasive aquatic plant that occurs in over 800 Minnesota lakes. Its early season growth, propensity to form dense surface mats, and ability to out-compete many native aquatic plants allow it to degrade the ecological and recreational quality of infested lakes. Consequently, there is great interest in adopting management strategies that can reduce the negative impacts of curlyleaf and provide some degree of long-term control on a lake-wide basis. 

I collaborated with the Minnesota Department of Natural Resources in 2006, 2007, and 2008 to evaluate lake-wide, early-season herbicide treatments for curlyleaf management. Six curlyleaf-infested lakes were treated with early-season, low-dose applications of endothall or fluridone herbicides for at least three consecutive years. Three additional lakes with established curlyleaf infestations were selected to serve as untreated reference lakes. 

For all study lakes, I annually assessed the frequency and biomass of curlyleaf in May and June, documented the production of new curlyleaf turions (reproductive buds) on standing plants, and tracked changes in the abundance and viability of turions in lake sediments. Curlyleaf frequency, biomass, turion production, and sediment turion abundance were reduced after treatment and were all significantly lower in treated lakes than in untreated reference lakes. However, viable turions remained in lake sediments after three consecutive years of treatment. These results suggest that serial lake-wide, early-season herbicide treatments can effectively decrease the negative impacts of curlyleaf and reduce the abundance of turions in lake sediments, but ongoing management will likely be required to maintain long-term control of curlyleaf in infested lakes. 

Zebra Mussels Prevention

Watch this Zebra Mussels Prevention video on YouTube.

Aquathol K

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.

Gleason Lake Sediment Report, 2009

Curlyleaf Pondweed and Eurasian Watermilfoil Growth Potential Based on Gleason Lake Sediment Characteristics [February 2009, 1MB]

Eurasian Watermilfoil

Film Screening: Troubled Waters: A Mississippi River Story

 Courtesy of TPT, “Troubled Waters” is now immediately available for on-demand viewing online.