Fish Lake Tile Outlet Mitigation

Project Details by Fiscal Year
2011 Fiscal Year Funding Amount
$255,900
Fund Source
Clean Water Fund
Recipient
Cottonwood and Jackson SWCD
Recipient Type
Local/Regional Government
Status
Completed
Start Date
January 2011
End Date
December 2013
Activity Type
Preservation
Restoration/Enhancement
Counties Affected
Cottonwood
Jackson
Legal Citation / Subdivision
Laws of Minnesota 2009, Chapter 172, Article 2, Section 6 (g)
Appropriation Language

2011 - Conservation Drainage

2011 Fiscal Year Funding Amount
$255,900
Other Funds Leveraged
$68,700
Proposed Measurable Outcome(s)

Woodchip bioreactors will be installed to reduce nitrogen from all tile outlets entering Fish Lake. This will help achieve the goal of a 40% reduction in Biological Oxygen Demand (BOD) in the Minnesota River. In addition to bioreactors, the project will install rock intakes on all open intakes in the watershed. This will provide initial filtering of the surface water and reduce sediment and phosphorus. Both practices can also provide limited water retention. Three grade stabilization projects will be installed to halt active gully erosion.

Measurable Outcome(s)

Estimated nitrogen reduction: 3101 lbs/yr; phosphorus 66 lbs/yr; TSS 9 tons/yr; soil loss reduction 9 tons/yr.

Project Overview

Fish Lake is a headwater of the Watonwan River. The lake is a regionally known fishery due to its unusual depth >20', lack of a mud bottom, and a naturally reproducing smallmouth bass fishery. The watershed has many tile drainage systems that are a source of nutrients to the lake. Woodchip bioreactors will be installed to reduce nitrogen from all tile outlets entering Fish Lake. This will help achieve the goal of a 40% reduction in Biological Oxygen Demand (BOD) in the Minnesota River.
In addition to bioreactors, the project will install rock intakes on all open intakes in the watershed. This will provide initial filtering of the surface water and reduce sediment and phosphorus. Both practices can also provide limited water retention. Three grade stabilization projects will be installed to halt active gully erosion.
The Cottonwood and Jackson SWCD and county staff have held meetings to discuss timelines, drainage structures, volume of wood chips, and other engineering requirements. In addition to landowner meetings the project was presented at the Fish Lake Association annual meeting.
Engineering was completed in the summer of 2011 with implementation scheduled for the spring and summer of 2012.

Project Manager
First Name
Kay
Last Name
Clark
Organization Name
Cottonwood and Jackson SWCD
Phone
(507) 831-1153 x3
Email
kay.clark@windomnet.com
Competitive Grant Making Body
Conflict of Interest Disclosed
No
Conflict of Interest Contact

Nicole Clapp