Put simply, a feasibility study is an assessment of whether a project is possible and worthwhile based on a variety of factors. To ensure the best outcome from our work, each project here at the MWMO undergoes a feasibility study before an approach is decided upon.
Our first steps in the feasibility study process are identifying issues and finding collaborators. Projects that align with our long-term goals, such as those set out in our ten-year Watershed Management Plan, are our main priority. We take note of current issues in our watershed or potential collaborators reach out to us with issues of their own. To contextualize this whole process, let’s walk through the feasibility study for our ongoing Sylvan Hills Park renovation. In 2023, the City of Fridley approached us with an opportunity to collaborate on enhancing water quality, habitat, and flood mitigation at the 2.6-acre neighborhood park. The City already planned to renovate the park, which created an opportunity for watershed-related improvements.
Once we had a collaborator and a broad set of issues to tackle, the next step was to analyze the project site and its current infrastructure. A geotechnical evaluation was conducted at the park, providing key insights into its soil and groundwater. For example, it was found that some areas of the park had soil which would have to be replaced because it was unsuitable for water infiltration.
Afterwards, the feasibility study was handed over to an engineering firm, which came up with a few different options for what could be done with the park to achieve our goals. The firm also estimated the cost-effectiveness of each option.
Our ideal method for stormwater treatment is green stormwater infrastructure (GSI), which is the management of stormwater runoff in ways that mimic natural processes and that incorporate benefits such as habitat or aesthetic value. Common examples include rain gardens, permeable paving, and green roofs. Eight GSI strategies were explored for implementation at Sylvan Hills Park. They were assessed based on pollutant reduction potential, flood reduction potential, site constraints, cost, operation and maintenance needs, and environmental impact. All concepts needed to incorporate a playground, tennis and basketball courts, and parking space as these features were present in the park already and the City wished to maintain them. The stormwater features required visual appeal so that they could be viewed as an amenity by park visitors. And crucially, all of this had to be done while restoring habitat within the park.
After extensive efforts by the engineers, the feasibility study was finalized and presented to the MWMO and the City of Fridley. Two preferred concepts arose. In the end, these concepts were merged into one hybrid approach: a combination of surface and underground GSI that will capture stormwater from 77 surrounding acres and treat water from up to a 1.1-inch rainfall event. Construction is now underway and is estimated to finish by November 2025.
The Sylvan Hills Park project is a clear example of how feasibility studies can lead to real improvements in our communities. For Fridley residents and park visitors, this means a greener, more resilient neighborhood park that helps protect local water quality and reduce flooding. As construction continues, we look forward to seeing long-term benefits for both the community and the watershed.
