Emergent Vegetation Plays an Important Role in Lake Health

Emergent aquatic plants such as cattails, bulrushes, and sedges grow within the shallow margins, or "littoral zone", of most lakes in Minnesota. They improve water clarity as their roots stabilize the lakebed sediments and take in nutrients. Their stems and leaves provide habitat for fish, invertebrates, and amphibians below the water, refuge for waterfowl and other wildlife above the water, and protection for shorelines against the force of wave action. Emergent plants often grow alongside other aquatic vegetation, such as floating-leaf and submerged plants, creating a diverse habitat essential to lake health.

Any Destruction of Emergent Vegetation Requires a Permit in Minnesota

Lakeshore owners often wish to remove emergent vegetation to improve their access to open water and/or increase usable recreational space. Given its importance in improving water quality, providing habitat, and protecting shorelines from erosion, any  removal of aquatic emergent vegetation requires a permit from the Department of Natural Resources. This process connects landowners with professionals to ensure that the extent of vegetation removal (and methods used to achieve it) minimizes impacts to the lake and all who use it. Learn more about aquatic plant regulations HERE

Purple loosestrife is another common invader of shallow water.

Non-native emergent species such as narrow-leaf and hybrid cattails often grow in dense monocultures capable of outcompeting native species. Habitat quality and recreational usability are reduced as these invasions spread across large expanses of shallow water, but management efforts to remove them are often challenging and costly. When occurring in small clusters, these plants can still provide water quality benefits along disturbed shorelines where native emergent plants are absent. In either circumstance, removing a non-native or invasive emergent species requires a permit. 

Aquatic vegetation is a natural and essential part of lake and wetland environments. The abundance and types of plants present are primarily driven by water depth and clarity. Many lakes in the north metropolitan area are shallow (less than 15 ft. deep) or are more functionally open-water wetlands. These lakes usually contain abundant vegetation throughout when paired with good water quality, allowing sunlight to reach the bottom. The alternative is poor water quality from disturbances such as excessive nutrient inputs, reducing aquatic vegetation and the fish and wildlife that depend on it. Learn more about shallow lake vegetation from this StoryMap produced by the Rice Creek Watershed District: Aquatic Plants: Guardians of our Shallow Lakes.

For more information contact Breanna Keith, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it.

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Improving Fish Habitat in the Rum River

ACD has grant funding available to enhance in-stream habitat in the Rum River! This effort focuses on areas adjacent to public land and those which are accessible for shore fishing. Rock vanes, woody overhangs, and similar features will be installed in areas where aquatic habitat structure is currently lacking to provide adequate holding and resting areas for game fish and the forage they rely on. This is part of a larger, corridor-scale river restoration effort supported by funding from the Outdoor Heritage Fund and several collaborating agencies. 

Photo: Existing high-quality habitat observed in northern Anoka County. The combination of rock and wood creates variation in structure and flow conditions, benefitting fish and their prey.

We are currently compiling a detailed inventory of existing conditions at several sites throughout Anoka, Isanti, and Mille Lacs Counties. Do you enjoy shore fishing along the Rum? Let us know which areas you think could use improvement! Share your feedback with Breanna Keith, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it.. 

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Log Revetments Holding Lakeshore in Place

Photo: A log revetment installed on the NE side of Martin Lake.

Addressing eroding slopes along an undeveloped portion of the Martin Lake shoreline required a creative stabilization solution. Sandy soils, wave action (increasing with boat activity), and fluctuating water levels cumulatively drove soil loading to the lake and the gradual encroachment of the shoreline toward the adjacent road. However, site access and workable land upslope was limited, and preserving mature trees and other natural shoreline elements was a priority. To achieve this, sections of stacked logs were anchored to the base of the shoreline along critical eroding areas. 

Photo: Diagram by the Wisconsin Land and Water Conservation Association.

The lower logs act as a barrier to prevent waves from washing out soil at the base of the slope, and the upper logs trap the sandy soil falling from behind – rebuilding the eroded voids and creating a more stable slope within which vegetation can become re-established. At the same time, wildlife such as nesting turtles can still access these areas. ACD staff will continue monitoring this site in the coming years to assess its long-term effectiveness in protecting the shoreline. For more information contact Breanna Keith,Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it..

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Natural Resources Funding on the Ballot this November

Since its establishment in 1988, the Environment and Natural Resources Trust Fund (ENRTF) has invested over one billion dollars in environmental projects "for the public purpose of protection, conservation, preservation, and enhancement of the state's air, water, land, fish, wildlife, and other natural resources." The constitutional dedication of these funds is set to expire in 2025, but Minnesota residents can vote this November to rededicate them through 2050. A 'Yes' vote supports this measure, whereas a 'No' vote opposes it. If left blank on the ballot, it will be counted as a 'No' vote.  

Funding for the ENRTF originates from Minnesota State Lottery proceeds and is administered by the Legislative-Citizen Commission on Minnesota Resources. It is a substantial source of long-term and stable funding for a variety of organizations and projects throughout the state, supporting efforts tied to improving water quality, habitat, recreation, outreach and education, renewable energy, and more. Learn more about the ENRTF and find a full list of the 1,700(+) projects it has supported HERE. For more information contact Breanna Keith, Water Resource Specialist at This email address is being protected from spambots. You need JavaScript enabled to view it..

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Water Quality Improvement Project Opportunities Identified in Ford Brook Watershed

Ford Brook is a stream tributary to the Rum River draining over 24,000 acres of rural lands in northwestern Anoka County. Nutrient concentrations in Ford Brook regularly exceed state standards for impairment, thereby contributing to excess nutrient loading in the Rum River. Addressing this issue requires watershed-level analyses and an understanding of which best management practice (BMP) would provide the greatest benefit per dollar spent; ACD's Subwatershed Analysis ("SWA") approach does just this.

Photo: Ford Brook Watershed location in northwestern Anoka County.

ACD has completed over 20 urban SWAs in order to strategically plan for BMPs such as stormwater ponds, rain gardens, and subsurface structures treating stormwater runoff. However, replicating this process in rural watersheds, dominated by agriculture, required different tools and techniques; ACD achieved this for the Ford Brook Watershed through the use of desktop analyses, targeted water quality monitoring, field surveys, and a new modeling tool called PTMApp. 

Photo: Cropped field with several candidate projects sited as part of this analysis. 

As a result, over 250 candidate water quality improvement projects were sited within the Ford Brook Watershed. The majority of these are agricultural practices such as cover crops, no-till farming, grassed waterways, water and sediment control basins, and enhanced riparian buffers, but additional practices such as prescribed grazing, wetland restorations, and lakeshore stabilizations were also included. For each practice, anticipated costs and water quality benefits to Ford Brook were generated, and all findings are summarized in detail in the corresponding SWA report. This report will be a valuable asset as we pursue nutrient reduction goals in Ford Brook and, by extension, the Rum River. For more information contact Breanna Keith, Water Resource Specialist at This email address is being protected from spambots. You need JavaScript enabled to view it..

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