Willow River (SC02,SC03) Watershed Planning


Watershed plan update 2010. The Upper and Lower Willow watersheds are located in west-central Wisconsin in Polk and St.Croix counties. These watersheds are part of the St. Croix River Basin (which is located in both northwest Wisconsin and east Minnesota). The Willow watersheds are two of twenty-two Wisconsin watersheds in this basin. This water-rich area is sprinkled with an assortment of inland lakes, major rivers and small streams. The Lower Willow watershed is situated entirely within St. Croix County. In this watershed, the Willow mainstem flows from the City of New Richmond, through Willow River State Park, Lake Mallalieu, and then joins the St. Croix River at Hudson (in the lower 25-mile Lake St. Croix reach). The Lower Willow covers 115 square miles. Tributaries to the Lower Willow include Paperjack Creek, Tenmile Creek, the Willow River Race Branch, and other unnamed creeks. These streams, in addition to the Willow River, account for 99 stream miles in the Lower Willow watershed. There are also 2139 acres of lakes and 2482 acres of wetlands. Lakes over 100 acres in this watershed include Oakridge and Bass Lakes and three impoundments on the Willow mainstem: the New Richmond Flowage, Little Falls Lake (in Willow River State Park), and Lake Mallalieu in Hudson.

Study Design

Watershed specified for planning and assessment purposes. Assessment of water quality condition in this respective county will use protocols described in WisCALM of the year of assessment. Minimum assessment work includes biological data (macroinvertebrates, fish indices), chemistry and habitat data. Additional work includes identification of priorities and goals, creating recommendations for actions, and updating narratives for watersheds and waterbodies. Assessments are to be double checked by at least one additional biologist.

Related Reports

Run Project Summary Report
View Umbrella-Projects
View Related-Projects

Water Quality Planning
Targeted Watershed Plans
Reports and Documents
TMDL Implementation Plan
Watershed at a Glance
Assessment and recommendations for SC02 and SC03.
Project Descripton
Watershed_portrait_Lower Willow River-wetlands
Watershed_landuse_Lower Willow River
Watershed_ORW303D_Lower Willow River
Watershed_portrait_Lower Willow River
Willow River, St. Croix County, Deer Park STP Use Designation, Stream Classification Report, Wastewater Receiving Stream Classification Report with Site Map and Site Photographs
Activities & Recommendations
Water Quality Planning
Willow River (SC02,SC03) Watershed Planning