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City Council Regular
Consider Adopting the Updated City of Coon Rapids Comprehensive Surface Water Management Plan
Sarah Greene, Administrative Assistant II
Staff requests City Council adopt the attached Comprehensive Surface Water Management Plan (CSWMP).
In March 2017, the City retained WSB under its Master Consulting Agreement to assist staff in completing an updated CSWMP to comply with requirements detailed in Minnesota Statutes 103B and Minnesota Rules 8410, administered by the Minnesota Board of Water and Soil Resources. This plan is also consistent with the goals and policies of the Metropolitan Council’s
Water Resources Management Policy Plan
, and the Coon Creek Watershed District. The CSWMP meets state regulations, and is intended to be a useful planning document to guide the City over the next ten years in conserving, protecting, and managing its surface water resources (storm sewer system).
Prior to finalizing the plan for agency review, and inclusion by reference in the City's 2040 Comprehensive Plan, staff met with the City Council in work session on February 13, 2018 to discuss the intended goals. Main components of the CSWMP include:
Addressing problem drainage areas throughout the City.
Understanding and planning for the effects of climate change - short duration/larger storm events.
Outlining the impacts of Atlas 14 design standards on the existing City stormwater system, including impacts of the current watershed model vs. FEMA flood maps.
Expanding inspections and maintenance of the City system to address potential storage deficiencies - pond & creek siltation, pipe sizing and trouble spots, culvert conditions and obstructions, etc.
Total Maximum Daily Load (TMDL) education, and watershed approach to corrective actions.
Public and Private chloride/salt usage and education.
Maintenance access/easements to public stormwater facilities.
Buffer requirement education and potential development.
Introduction of computerized asset management program for systematic evaluation and prioritization of needed maintenance.
POTENTIAL GROUNDWATER - SURFACE WATER CONNECTIONS
Understanding potential impacts to wellhead protection (infiltration practices) and aesthetics/recreational opportunities on City waterbodies. Recharge vs. protection of resources in the Anoka sand plain.
Goals developed within the CSWMP are intended to addresses several key areas with respect to water use within the City and region:
Protect, preserve, and use natural surface and groundwater storage and retention systems;
Minimize public capital expenditures needed to correct flooding and water quality problems;
Identify and plan for means to effectively protect and improve surface and groundwater quality;
Establish more uniform local policies and official controls and strive for regional uniformity in surface and groundwater management;
Prevent erosion of soil into surface water systems;
Identify the unique connection between surface water and groundwater and look for opportunities to promote groundwater recharge, where beneficial;
Protect and enhance fish and wildlife habitat and water recreational facilities; and
Secure the other benefits associated with the proper management of surface and groundwater.
The final CSWMP was approved by the Coon Creek Watershed District on October 8, 2018. The CSWMP was also referenced in the Coon Rapids 2040 Comprehensive Plan, recently submitted to the Met Council, and outlines regulatory reporting methods as the City works toward the implementation of the stated goals.
Staff recommends City Council adopt the attached Comprehensive Surface Water Management Plan, and authorize its implementation. Due to size, the appendices for the attached plan could not be included in this memo but are available upon request.
Proposed purchases or projects that are required to meet the stated goals of the CSWMP will be identified within the City's annual budgeting process.
Comprehensive Surface Water Management Plan
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