Nokomis Groundwater and Surface Water Issues
Two bedrock groundwater monitoring wells to be installed at Solomon Park starting Dec. 10
Over the next three weeks, contractors will be installing two new bedrock groundwater monitoring wells in the northwest corner of Solomon Park near Lake Nokomis.
The two wells are being installed to provide information, in conjunction with the observation wells installed earlier this year, about the vertical flow of groundwater in the Nokomis area. This work is part of a multi-agency effort to better understand groundwater movement and water issues in the Nokomis area.
As groundwater and surface water management within Minneapolis falls under many different jurisdictions, a group of agencies are working in partnership to evaluate and understand the water issues. Primary agencies participating in the evaluation include MN Department of Natural Resources (DNR), City of Minneapolis, Minneapolis Park and Recreation Board (MPRB), Minnehaha Creek Watershed District (MCWD) and Hennepin County. These agencies are also coordinating with MN Department of Transportation (MnDOT) and Metropolitan Airports Commission (MAC).
Installation of the wells is expected to begin December 10 and be completed by December 31, 2018.
View the October 9, 2018 Newsletter here.
As part of efforts to keep area residents informed and engaged, the Nokomis Area Groundwater and Surface Water Evaluation team held an open house on Wednesday, Oct. 24. Interagency staff were on hand to provide information and answer questions on a variety of topics related to groundwater and surface water issues in the area. Information from this meeting will be posted on this site soon.
What is the Concern:
Property owners near Lake Nokomis have noted higher levels of groundwater and standing water in previously dry areas, such as Solomon Park and Lake Nokomis Park. Additionally, the City of Minneapolis has received concerns over deteriorating private sewer laterals and groundwater impacting basements and foundations. The Minneapolis Park and Recreation Board has observed high water levels in Lake Nokomis, which has impacted beaches and shorelines.
Area of Concern:
What are we Working to Understand:
- Are surface water and groundwater levels near Lake Nokomis, particularly south and west of the lake, increasing?
- To what extent do groundwater levels interact with surface water levels in this area?
- What are the potential impacts to public and private infrastructure?
- If groundwater and/or surface water levels are rising, why and what can be done?
Who is Working to Understand the Concerns?
Groundwater and surface water management within Minneapolis falls under many different jurisdictions, therefore a group of agencies are working in partnership to evaluate and understand the groundwater impacts. Agencies participating in the evaluation include MN Department of Natural Resources (DNR), City of Minneapolis, Minneapolis Park and Recreation Board (MPRB), Minnehaha Creek Watershed District (MCWD), and Hennepin County. These agencies are also coordinating with MN Department of Transportation (MnDOT), Metropolitan Airports Commission.
How are these Agencies Working Together?
Staff from the DNR, City of Minneapolis, MPRB, and MCWD are working together in a technical team to try and understand the questions noted above, while coordinating with other technical partners (noted above) as needed.
The work of the technical team has included installing new shallow groundwater wells, reviewing groundwater elevation data from existing monitoring wells, understanding soil characteristics and geology underlying the area, summarizing precipitation data, modeling groundwater recharge rates, looking at the Lake Nokomis water levels, and reviewing the operation of the Nokomis weir.
For additional questions or concerns, please email [email protected]
Presentation & Reports
Following a meeting with state, regional and local partners on November 30, 2017 the Surface Water and Sewers Division of Minneapolis Public Works committed to leading an technical team to investigate what is known about high groundwater challenges south and west of Lake Nokomis. The technical team had an initial meeting on January 22, 2017 to discuss sources of data, gaps in understanding, and how to bring resources together to conduct further technical work. Going forward, the team will determine what additional investigation may be needed to address the high groundwater and surface water issues in this area.
Nokomis Area Groundwater & Surface Water Evaluation, Leadership Team Meeting Notes- May 1, 2018
Minneapolis Groundwater Technical Review - March 30, 2018
Preliminary Findings of Nokomis Area Groundwater Based on Metro Model 3 - Ray Wuolo
Hydrogeologic data for Nokomis and Hiawatha Lakes
Nokomis Groundwater - Surface Water Coordination meeting - November 30, 2017
Technical Team Meeting Minutes
*City of Minneapolis
*Minneapolis Park & Recreation Board (MPRB)
*Minnesota Department of Natural Resources (MnDNR)
*Minnehaha Creek Watershed District (MCWD)
*Metropolitan Council Environmental Services (MCES)
Minnesota Department of Transportation (MnDOT)
City of Richfield
Minneapolis Saint Paul Metropolitan Airports Commission (MSP MAC)
* Denotes Technical Team Member
Last updated Dec 7, 2018