The Rum River has over 7 miles of shoreline with some degree of erosion. Riverbank stabilization practices protect property, enhance shoreline habitat, and improve downstream fisheries by improving water clarity and protecting spawning areas. Cedar tree revetments are among the most cost-effective means of addressing moderate riverbank erosion before it worsens.

Anoka County Parks was awarded a Conservation Partners Legacy grant to install 2,500 feet of cedar revetment on eroding sections of the Rum River. ACD was contracted by Anoka County Parks and completed this work between 2023 and 2025. ACD overdelivered by installing 2,933 feet of revetment within available funds.

Cedar tree revetments use Eastern red cedar trees anchored along an eroding riverbank to slow the current. This decreases erosion and allows silt and sand to deposit. The deposited material forms a seedbed. By the time the cedar trees have decayed, the bank is stabilized by the roots of the living trees. 

The MNDNR was excited about what they saw and encouraged Anoka County Parks to continue their revetment program, which is now in its 3rd phase. With the support from the state, Anoka County Parks will likely apply for another phase of funding this coming August.

Restoring streambanks and establishing habitat along public riverbanks will benefit the thousands of Anoka County residents who frequent local parks, as well as Rum River enthusiasts each year. For more information, contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it.. 

It's spring and many of us are thinking about planting!. Many great online resources exist to help guide landowners. The links below will bring you to webpages on pollinators, site identification, plant selection, planting hints, and much more:

• Metro Blooms and Blue Thumb (See "Plant Finder" on the Resources page.)
• MN Board of Water and Soil Resources (BWSR) Pollinator and Biodiversity Toolbox
  • "Creating Residential Pollinator Habitat" page for garden templates for different light/moisture conditions and more.
  • Planting for Pollinators: Principles and Design for Residential Pollinator Habitat
  • Pollinator garden templates for native plant pollinator gardens
    • Shady Garden
    • Rain Garden
    • Sunny and Low (Boulevard) Garden
• DNR Minnesota's Pollinators
• University of Minnesota and University of Minnesota Extension
  • Native Plants page
  • Plant for bees and other pollinators page
  • Minnesota Wildflowers – A Field Guide to the Flora of Minnesota

Resources for shoreline areas

• DNR Planting Trees and Shrubs on Your Shoreline
• DNR Planting Perennials on Your Shoreline
• DNR Natural shorelines page

The list above was compiled by the MNDNR in their March 2026 Water Talk Newsletter.

The University of Minnesota, St. Anthony Falls Laboratory (SAFL), conducted a study that researched three distinct hydrodynamic phenomena that are produced by common recreational powerboats and that have the potential to impact the water column and lakebed: 1) bow and stern pressure waves, 2) transverse gravity waves, and 3) propeller wash (Figure 3). 

The study examines common boat designs, their ability to generate certain forces within the lake, and how deep into the water column these forces penetrate. SAFL researchers found that impacts to the lakebed are directly linked to how the boat is being used. Recreational boats have long produced damaging waves, but in recent years, the SAFL has recognized that the science has not kept pace with advances in boat technology. As powerboats continue to increase in size, horsepower, and new wake-enhancing technologies. This has led to concerns about the impacts of boating on the aquatic environment. In particular, the impacts of wakeboats operating in wakesurfing mode are a topic of intense public interest. 

The boats were tested under conditions typical of their usage (Figure 1). For the non-wakeboats (deck and bowrider), this was displacement mode (leisure cruise) and planing mode (cruising), and for the wakeboats, this was semi-displacement mode (surfing) and planing mode (cruising). The boats were driven directly over the measurement sensors (Figure 2) a total of five times for each operational condition to gather replicate data for statistical analysis.

ACD was contracted by the Isanti Soil and Water Conservation District (SWCD) to monitor water quality in 7 Lakes, located in the Oxford Township of Isanti County. These lakes are within the Lower St. Croix watershed and have been monitored by the Isanti SWCD since 2017. These lakes have diverse aquatic plant communities, and several rare plant and/or species of special concern have been identified. These natural environment lakes are located in areas of Isanti County that are poised for development in the coming years, making it a crucial time for outreach and education. Conservation agencies such as the Isanti SWCD and the Lower St. Croix Watershed Partnership recognize the importance of using policy and education to help preserve and protect the environment.

Check out this short video on protecting lakes in Oxford Township. The Isanti SWCD is one of the 16 partners of the Lower St. Croix Watershed Partnership, an initiative that looks to protect and restore our water resources for the next ten years. You can learn more about the Isanti SWCD and the LSC Watershed Partnership. For more information contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it..

As summer warms up, the likelihood of harmful algae blooms increases. Cyanobacteria, also known as blue-green algae, are a type of photosynthetic bacteria. Cyanobacteria are naturally found in all lakes, rivers, and ponds, and, like plants and algae, they perform photosynthesis, obtaining their energy from the sun. Unlike true algae, cyanobacteria aren't a key part of the food chain, and most organisms choose not to eat them. Under the right circumstances, cyanobacteria can multiply to form a bloom. A bloom is a sudden increase in cyanobacterial cells in a specific area of water. Some species of cyanobacteria can create toxins that are harmful to human and animal health, known as cyanobacterial harmful algal blooms (cyanoHABs). 

CyanoHABs can make people and animals sick if they breathe in, swallow, or come into contact with water or scum that contains toxins. Sunlight, high temperatures, and abundant nutrients, such as phosphorus and nitrogen, can increase the likelihood of a bloom occurring. Warm weather patterns and significant rain events that result in more stormwater runoff entering the water can also jump-start a bloom. Blooms typically occur during the warmer months, between mid-June and mid-September. As Minnesota's climate changes, it's fueling more frequent and intense rain events, floods, and warmer weather, contributing to more harmful algal blooms. For more information, check out the Minnesota Pollution Control Agency webpage or contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it..