Happy 1st Birthday Rain Gardens

Six curb-cut rain gardens were installed approximately one-year ago and have been capturing runoff and its associated pollutants ever since. With each rainfall, runoff flowing in the street gutter is redirected into the rain gardens via a cut in the curb. Following a rain event, the water that enters the rain gardens is able to soak into the ground, which better mimics the natural hydrology before impervious surfaces (e.g. roofs, driveways, roads, etc.) and storm sewers directed runoff directly to Rice Creek. The rain gardens are able to store water and are filled with native species that were carefully selected for the site-specific conditions (e.g. light, soil type, and moisture).

Cumulatively, the six rain gardens are estimated to infiltrate 455,000 gallons of water, as well as remove 605 pounds of sediment and two pounds of phosphorus loading to Rice Creek annually. The native plants help to maximize infiltration and provide the co-benefit of pollinator habitat. One additional rain garden is located adjacent to a trail entrance into Locke County Park, providing an excellent public education opportunity.

These rain gardens were installed in partnership with the landowners, the City of Fridley, and the Rice Creek Watershed District. ACD provided design services and construction oversight.  

The rain garden shown in the pictures below was planted last summer and as you can see, it didn't look like much at the time. Now, it looks beautiful and is full of flowers which pollinators love! This rain garden captures curbside runoff from 6.5 acres of neighborhood which previously went untreated to the Rum River. The native plant's roots create channels through the soil and reduce compaction, ensuring a maximum amount of water can infiltrate into the ground. The homeowners who worked with ACD to make this rain garden a reality, kept weeds at bay, and provided irrigation for the new plants during drought conditions!

Project funding was from the Clean Water, Land, and Legacy amendment, and the Lower Rum River Watershed Management Organization. To see other rain gardens installed throughout Anoka County, please see the virtual project tour on ACD's website.

For more information on rain gardens in Anoka County contact Mitch Haustein at This email address is being protected from spambots. You need JavaScript enabled to view it. or 763.434.2030 x150

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PROJECT UPDATE - RIVERBANK STABILIZATION IN MISSISSIPPI RIVER COMMUNITY PARK, ANOKA

Approximately 1,500 feet of severely eroding riverbank in Mississippi River Community Park was stabilized in late 2021. The project included tree clearing, bank reshaping, riprap, erosion control blanket, seeding, and planting of a variety of native plant species.

Since installation, the site has been subjected to high water in 2022 and 2023. Both the riprap on the lower elevations of the bank and the vegetation on the upper elevations have successfully stabilized the site.

Moving forward, you may observe some vegetation maintenance to help the native species establish. Some examples include supplemental planting of native species and mowing to a height of approximately 6" to limit weed species from dispersing seed.

The project was funded by a Clean Water Fund grant, a Watershed Based Funding grant, and match from the City of Anoka. 

For more information about the project contact Mitch Haustein at This email address is being protected from spambots. You need JavaScript enabled to view it. or 763.434.2030 x150

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SONAR AS A DESIGN TOOL FOR SHORELINE STABILIZATION PROJECTS

Data collection on the Rum River.

ACD staff have been testing the use of sonar to aid with the design of shoreline stabilization projects.

Lake and river bottom elevations are often required when designing projects. Collecting these bottom elevations manually with survey equipment often pose safety risks, limits resolution, and can be time consuming. Automated collection of underwater elevation data is possible with readily available sonar technology and post-processing services. Manually collecting data at the same resolution is infeasible.

A fishing depth finder and transducer combination with active mapping capabilities is necessary for data collection. The equipment can be configured in a portable setup for use in a kayak, canoe, or motorized boat to enable data collection on a variety of waterbodies (e.g. stormwater ponds, lakes, or the Mississippi River). While idling or paddling around the area of interest, data is collected and stored on a memory card and then uploaded to a third-party software for post-processing.

Technology limitations still remain, but the end products provide a picture of the underwater landscape through a variety of file types that are useful for project design, mapping, and inventory work. 

For more information contact Mitch Haustein at 763.434.2030 ext. 150 or This email address is being protected from spambots. You need JavaScript enabled to view it..

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SHORELINE STABILIZATION PRESENTATION

Anoka Conservation District staff were invited to provide a presentation at the annual Stearns County Shoreland Workshop. The workshop is required for contractors conducting shoreland work in Stearns County to ensure an understanding of permit requirements and best practices. Stormwater and Shoreland Specialist, Mitch Haustein, provided a 45-minute presentation to approximately 120 attendees. Topics included site prioritization, funding, partnering with landowners, design, permitting, bidding, construction, project closeout, and establishment and maintenance. Lessons learned were also shared throughout the presentation. The presentation was very well received by attendees.

ACD Contact: Mitch Haustein,  763.434.2030 x150, This email address is being protected from spambots. You need JavaScript enabled to view it.

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KNOW YOUR SHORELINE

Minor erosion at the toe of slope exposed during low water. If the erosion is addressed early, larger bank failures in the future may be avoided.

If you live on water, whether it be a lake, river, creek, or stormwater pond, low water during the summer months can provide a great opportunity for you to conduct a quick inspection of your shoreline condition. The very bottom of your shoreline, where it meets the water, is called the toe and is the most critical part for stability.

Low water often exposes the toe of the slope and allows you to identify areas of concern. For example, you might observe undercutting, where the lowest portion of the bank has been scoured away by flowing water or wave action. When problems are caught early, the solutions are often much simpler and cheaper. Addressing erosion concerns early also helps prevent more severe bank failures down the road.

Another good time to inspect your bank is in the fall once leaves have fallen and before snowfall. You can inspect the upper portions of your bank for problems like rutting from concentrated overland flow over the top of the bank.

If you have any questions about your shoreline or think a site visit may be warranted, please contact ACD staff. We're here to help. 

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