On lakeshores and riverbanks, fluctuating water levels, currents, or wave action can gradually eat away the soil along the water's edge and compromise the ground above. However, any slope – regardless of its proximity to a waterbody – can experience erosion from water runoff. Fortunately, there are steps you can take to mitigate these impacts. 

Vegetation is often essential to slope stabilization. Native trees, shrubs, wildflowers, and grasses provide ground cover, slow the velocity of water runoff, and produce a network of deep, interconnected roots, which help lock soil in place. Lawn debris, heavy shade, and invasive buckthorn are common drivers of suppressed plant growth. To manage these challenges, avoid dumping yard waste on sloped areas, prune trees and shrubs to increase sunlight, and remove buckthorn using these techniques. Then, bolster the native plant community with supplemental seeding and/or plantings. Be sure to select species well-suited to your property, and support them as they became established by removing weeds, watering when needed, and covering temporarily exposed soils with erosion control fabric. This seed selection tool, plant finder tool, and native plant encyclopedia can help you select plants well-suited to your site.  

In some cases, additional stabilization elements are needed. Rock rip-rap, coir logs, and tree revetments are commonly used to protect the zone where moving water meets the land and restricts vegetation growth. Excessively steep slopes can be re-shaped to a more stable grade, and brush or straw wattles can be trenched into the slope to slow water runoff and trap soil. Taking early action to stabilize your slope is key to avoiding costlier solutions such as retaining walls or other heavily engineered approaches. 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. 

Stormwater runoff from Fridley's Channel Rd. NE neighborhood currently flows to and through the storm sewer network directly to Rice Creek, untreated. This is a common occurrence in well-established neighborhoods built prior to stormwater treatment regulations. However, thanks to collaboration between the City of Fridley, Rice Creek Watershed District (RCWD), ACD, and private landowners, this neighborhood with soon be retrofitted with four curb-cut rain gardens designed to reduce water volume and pollutants entering Rice Creek. 

These gardens have been strategically located throughout the neighborhood in order to capture as much runoff as possible. The benefits of infiltrating this stormwater will amount to an estimated reduction of 56,192 cubic feet of water, 3.57 lbs of phosphorus, and 677 lbs of total suspended solids to Rice Creek per year. Each garden will also be densely planted with native forbs, grasses, and shrubs to provide improved water infiltration and pockets of high-quality habitat in a highly developed landscape. 

Funding is provided by the RCWD's water quality cost share program and the City of Fridley. Landowners at each garden site have voluntarily enrolled in this opportunity and have agreed to maintain these gardens to ensure long-term functionality. 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.. 

Each season, local high school students venture to a nearby river or stream, grab a dip net and pair of waders, and search for invertebrates (a mix of aquatic insects, crustaceans, bugs, snails, worms, and other critters lacking a backbone) living amongst the submerged rocks and vegetation. They bring their catch back to their partners on shore, who use guides to identify the invertebrates or preserve them for identification at a later date in the lab. In 2023, ACD staff led 560 high school students across 20 classes and 5 schools in these "biomonitoring" efforts. Besides being a great way to get some fresh air, students learned valuable lessons in aquatic ecology. 

Individual aquatic invertebrates have different sensitivities to environmental disturbances such as contamination and habitat loss. Some, such as stonefly and mayfly nymphs, often have a strong negative reaction to disturbance, while others, such as leeches, midges, and aquatic worms, are usually more tolerant and able to persist through a variety of conditions. Understanding these tolerance thresholds across species is an efficient way to broadly assess the health of a waterbody. For example, a high quantity and/ or diversity of species including those considered "intolerant" (sensitive) is a likely indicator of healthy habitat and water quality, whereas the presence of only more "tolerant" species hints at poorer water quality and habitat. Biomonitoring data is often paired with other information, such as water quality or stream morphology data, to identify where aquatic impairments are present and management efforts should be pursued.

After the students have finished collecting and processing samples, ACD staff re-identifies them and summarizes the data in the annual Water Almanac. Through this, big-picture trends in invertebrate communities (and stream health, by extension) can be explored across time. For more information contact Breanna Keith, Water Resource Technician, at This email address is being protected from spambots. You need JavaScript enabled to view it..