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Projects

Bassett Creek Park Phase I Dredging Project: Winnetka Pond

Crystal

Project Number: BCP-2

Project Status   |  Active

A feasibility study was completed and approved in May 2017 and includes bathymetric surveys, wetland delineations, and sediment sampling including analyses for harmful contaminants in both Bassett Creek Park Pond and Winnetka Pond. The Commission approved the Engineer's recommendation to dredge only Winnetka Pond (with intent to dredge Bassett Creek Park Pond in a future year) to a depth of 6 feet; to install a native vegetative buffer around most of the pond, and to control the goose population at the pond. An open house and public input meeting was held in February 2017 for residents to learn more about the project and for BCWMC and city staff to hear concerns and answer questions. See the feasibility study for further details, maps, analyses, etc.

A public hearing was held September 21, 2017 to hear residents concerns and answer questions about the project. After the hearing was closed, the BCWMC officially ordered the project by resolution.


Project Funding   |   Not Grant Funded

Estimated project costs for the recommended alternative is $1,000,000. 30-year annualized cost for pollutant removal is $960/lb total phosphorus and $27/lb total suspended solids based on professional judgement pollutant removal calculations. BCWMC capital projects such as this are typically funded through an ad valorum tax of all watershed residents levied by Hennepin County on the BCWMC's behalf through Minnesota Statutes Section 103.251. A 2018 levy amount of $1,000,000 was certified to Hennepin County in September 2017. This amount includes design and construction costs ($913,000), feasibility study costs ($60,000) and BCWMC administrative costs ($27,000).


Project Description

This project will have the following benefits:

  • Removal of 18,400 cubic yards of sediment from Winnetka Pond
  • Increased permanent pool volume to maintain flood control benefits
  • Increased sediment storage volume in pond resulting in reduced sediment and phosphorus loading to the North Branch of Bassett Creek and all downstream water bodies, including the Mississippi River including removal of an estimated 51.7 pounds of total phosphorus and 1,823 pounds of total suspended solids, annually (including modeled and professional judgement estimates)
  • Improved water quality from native vegetated buffer that will filter pollutants from storm water runoff
  • Improved habitat for wildlife and pollinators with native buffer
  • Improved water quality through nutrient and bacteria reductions from goose management

More Information

Resolution Ordering Project Sept 2017

Project Overview Presentation Sept 2017

Final Feasibility Study May 2017 (no appendices)

Feasibility Study Appendices May 2017