Oneida
No
Yes
Yes
Fish and Aquatic Life
Overview
Willow Flowage, in the Middle Tomahawk River Watershed, is a 4,217.09 acre lake that falls in Oneida County. This lake is an outstanding/exceptional resource water under NR102 under the Fisheries Program. This lake is managed for fishing and swimming and is currently considered impaired.
Date 2011
Author Aquatic Biologist
Historical Description
Source: 1966, Surface Water Resources of Oneida County Willow Reservoir, T37N, R5E., Section 9 Surface Acres = 5,134.9, S.D.F. = 7.29, Maximum Depth = 22 feet.
A soft water drainage lake having slightly acid, light brown water of moderate transparency. Sand is the predominant littoral material with significant areas of gravel and rubble with some muck. Shoreline is predominantly upland, however, wetlands adjoin significant portions of the lake basin. Muskellunge, northern pike, walleye, largemouth bass, perch, bluegill, crappie, rock bass, pumpkinseed, bullhead and sucker are fish species inhabiting this lake. Public access without parking is available. However, the Wisconsin Valley Improvement Company maintains a landing with parking for use by the public. Six resorts, 8 boat rentals and 12 dwellings are located on the shoreline. Mallard and black duck use this lake as a nesting site. Puddle ducks, diving ducks and Canada geese use this lake on their spring and fall migrations. This lake is actually an impoundment on the Tomahawk and Willow Rivers with water levels maintained by a water control structure of 18 feet head.
Date 1966
Author Surface Water Inventory Of Wisconsin
Management Goals
Wisconsin's Water Quality Standards provide qualitative and quantitative goals for waters that are protective of Fishable, Swimmable conditions [Learn more]. Waters that do not meet water quality standards are considered impaired and restoration actions are planned and carried out until the water is once again fishable and swimmable
Management goals can include creation or implementation of a Total Maximum Daily Load analysis, a Nine Key Element Plan, or other restoration work, education and outreach and more. If specific recommendations exist for this water, they will be displayed below online.
Monitoring
Monitoring the condition of a river, stream, or lake includes gathering physical, chemical, biological, and habitat data. Comprehensive studies often gather all these parameters in great detail, while lighter assessment events will involve sampling physical, chemical and biological data such as macroinvertebrates. Aquatic macroinvertebrates and fish communities integrate watershed or catchment condition, providing great insight into overall ecosystem health. Chemical and habitat parameters tell researchers more about human induced problems including contaminated runoff, point source dischargers, or habitat issues that foster or limit the potential of aquatic communities to thrive in a given area. Wisconsin's Water Monitoring Strategy was recenty updated.
Grants and Management Projects
Monitoring Projects
WBIC | Official Waterbody Name | Station ID | Station Name | Earliest Fieldwork Date | Latest Fieldwork Date | View Station | View Data |
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1528300 | Willow Flowage | 10021650 | Willow Flowage - A | 8/28/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 10030976 | Willow Flowage -- Access | 5/26/2013 | 5/26/2013 | Map | Data |
1528300 | Willow Flowage | 443398 | Willow Flowage - Tomahawk River Arm of Reservoir | 5/5/1993 | 10/27/2022 | Map | Data |
1528300 | Willow Flowage | 10033502 | Willow Flowage - East (TW) at outlet | | | Map | Data |
1528300 | Willow Flowage | 10021653 | Willow Flowage - D | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 443528 | Willow Flowage - Headwater above Dam | 6/3/1993 | 12/30/2019 | Map | Data |
1515800 | Tomahawk River | 443528 | Willow Flowage - Headwater above Dam | 6/3/1993 | 12/30/2019 | Map | Data |
1528300 | Willow Flowage | 10004245 | Willow Flowage | 12/31/1994 | 9/21/2017 | Map | Data |
1528300 | Willow Flowage | 443286 | Willow Lake - Willow Reservoir - Deepest Spot | 7/16/1979 | 8/28/2007 | Map | Data |
1528300 | Willow Flowage | 443397 | Willow Flowage - Willow River Arm of Reservoir | 5/5/1993 | 10/27/2022 | Map | Data |
1515800 | Tomahawk River | 10019114 | Willow Flowage -- Access Nr Cedar Falls Rd | 7/25/2010 | 10/27/2019 | Map | Data |
1528300 | Willow Flowage | 443404 | Willow Flowage - Near Dam | 5/6/1994 | 5/6/1994 | Map | Data |
1528300 | Willow Flowage | 10018882 | Willow Flowage #1 -- Access - Off Willow Dam Rd - Near Dam | 7/3/2008 | 8/14/2024 | Map | Data |
1528300 | Willow Flowage | 10021651 | Willow Flowage - B | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 443396 | Willow Flowage - Max Depth | 5/5/1993 | 10/27/2022 | Map | Data |
1528300 | Willow Flowage | 10018901 | Willow Flowage -- Access Off Rozell Rd | 8/31/2017 | 8/31/2017 | Map | Data |
1528300 | Willow Flowage | 10021652 | Willow Flowage - C | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 10037720 | Willow Reservoir Flowage nearshore | 8/22/2012 | 8/22/2012 | Map | Data |
1528300 | Willow Flowage | 10018899 | Willow Reservoir -- Access - Off Willow Dam Rd | 8/14/2006 | 8/7/2021 | Map | Data |
1528300 | Willow Flowage | 10021655 | Willow Flowage - F | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 10033501 | Willow Flowage - South (#2) | | | Map | Data |
1528300 | Willow Flowage | 10021659 | Willow Flowage - J | 8/28/2007 | 8/28/2007 | Map | Data |
1528300 | Willow Flowage | 10021658 | Willow Flowage - I | 8/28/2007 | 8/28/2007 | Map | Data |
1528300 | Willow Flowage | 10033500 | Willow Flowage - East (#1) among islands | | | Map | Data |
1528300 | Willow Flowage | 443405 | Willow Flowage - Far Dam | 5/6/1994 | 8/22/2012 | Map | Data |
1528300 | Willow Flowage | 10021657 | Willow Flowage - H | 8/28/2007 | 8/28/2007 | Map | Data |
1528300 | Willow Flowage | 10021654 | Willow Flowage - E | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 10021660 | Willow Flowage - L | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 10021661 | Willow Flowage - K | 8/29/2007 | 8/29/2007 | Map | Data |
1528300 | Willow Flowage | 10021656 | Willow Flowage - G | 8/28/2007 | 8/28/2007 | Map | Data |
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![](wsWaterEcosystem.ashx?watershed=UW37)
Watershed Characteristics
Willow Flowage is located in the Middle Tomahawk River watershed which is 233.30 miĀ². Land use in the watershed is primarily forest (64.60%), wetland (26.90%) and a mix of open (7%) and other uses (1.50%). This watershed has 191.49 stream miles, 4,575.90 lake acres and 42,061.39 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Not Ranked for runoff impacts on streams, Low for runoff impacts on lakes and Low for runoff impacts on groundwater and therefore has an overall rank of Low. This value can be used in ranking the watershed or individual waterbodies for grant funding under state and county programs.However, all waters are affected by diffuse pollutant sources regardless of initial water quality. Applications for specific runoff projects under state or county grant programs may be pursued. For more information, go to surface water program grants.