Field Observation of Erosion Concerns Along the Mississippi River at 6356 Riverdale Dr NW

The purpose of this case is to allow for field observation as a follow-up to the discussion that was held by the Council at the October 27, 2015 meeting.  This field visit is intended to provide the City Council an opportunity to see some common concerns that owners of riparian lots, have regarding erosion and potential destabilization of the river banks.  Mr. John Freeburg, 6356 Riverdale Dr NW, has contacted the City with concerns about bank stabilization and erosion issues, and has also offered to host a meeting with City Council at his property to observe these concerns firsthand. 

In addition to observing some of these issues,  several other riparian lot owners are expected to be in attendance.  This is an opportunity to hear from several residents with property along the river regarding possible corrective actions, more specifically, rock rip-rap.  There is a perception that the Minnesota Department of Natural Resources (DNR) does not approve of this method for bank stabilization projects.  However, it is Staff's understanding that while rock rip-rap may not be the preferred method, if it can be demonstrated that other best management practices are not practical, then the DNR will approve this technique.  Note that any work that were to occur below the Ordinary High Water (OHW) mark does require a permit from the DNR and any work above the OHW is regulated by the local authority.

Below is an excerpt from the October 27, 2015 case outlining resources that may be available for residents interested in potential stabilization projects: 

The City and its residents have access to financial assistance through a variety of sources. Primarily, the City directs interested residents to the Anoka Conservation District for these types of inquiries. There are several opportunities within the following categories related to soil and water conservation:

1. Lakeshore Restoration or Stabilization
2. Streambank Restoration or Stabilization
3. Rain Gardens
4. Wildlife Habitat Management
5. Agricultural Conservation
6. Conservation Easement
7. Land Acquisition
8. Ecosystem Restoration

Many of the current resources have a significant resident match requirement, making it a barrier to many of the documented issues. In discussions with the Anoka Conservation District, it was noted that a more detailed shoreline inventory of the Mississippi River would help identify and prioritize problem areas, which would then potentially qualify these areas for additional funding sources with lowered match requirements.
 

 

30-60 minutes

This case is being handled as part of Staff's regular duties.

Community Development Department

The desired outcome of this onsite meeting is simply to give City Council an opportunity to see first hand some of the concerns with erosion along the Mississippi River (this would also be applicable to the banks of the Rum River as well) and hear from several other riparian property owners regarding their concerns.  Staff will follow up with City Council at a later date about possibly next steps.