Sunrise River Highway-61 Wetland Enhancement
Project Description & Outcomes
The proposed project diverts flow from an existing ditch system in the Highway 35 drainage area, through a pre-treatment cell, and then diffuses the flow into the wetland complex located on the Tax Forfeit property owned by the Comfort Lake-Forest Lake Watershed District (CLFLWD). The proposed project will result in annual phosphorus reductions of 89 lb/yr to the Sunrise River and 65 lb/yr to Comfort Lake which ultimately drains to the St. Croix River through the Sunrise River (these estimates were updated from the original concept and are based on the final project design). The project will also provide increased wildlife habitat and add 18.3 acre-ft of flood storage to the area.
The project will be constructed on the CLFLWD-owned property and will not impact any of the properties along the drainage ditch or those adjacent to the project area.
The proposed project was identified for targeted implementation through the District’s 2012 Sunrise River Water Quality and Flowage Project Engineer’s Report, the District’s 2012-2021 Watershed Management Plan, and the 2010 CLFLWD Six Lakes Total Maximum Daily Load Study. View the Feasibility Study for more information on the project. This is one of the resulting projects from the 2010 Chisago County petition.
Project Status
In-Progress
Project Outcomes
89 lbs/yr phosphorus removal at Sunrise River
65 lbs/yr phosphorus removal at Comfort Lake
18.3 acre-ft flood storage added
22.1 acres wetland habitat restored
Wildlife habitat improvements
Financials
Clean Water Fund Grant: $492,000 (Grant Report)
Section 319 Grant: $100,000
Lower St. Croix: $300,499
CLFLWD Grant Match: $640,885
Total Project Budget : $1,533,384
Lifecycle cost:
$600 per pound of phosphorus removed
Timeline
2020-2022: Project development and design
2023: Project construction, revegetation, and closeout
Project Partners
Project FAQ
The project will be constructed on property owned by the Watershed District and will NOT impact any of the properties along the drainage ditch or those adjacent to the project area. The project will add 18.3 acre-ft of flood storage which will help reduce flooding in the area during large rainfall events.
The project is designed to divert some of the water coming out of a drainage ditch in the Highway 35 drainage area into a treatment system and restored wetland. The water levels of the Heims will not be affected. The diversion of water will also add 18.3 acre-ft of additional flood storage to the area helping to reduce the risk of flooding after large rainfall events.