Glen Loch Flowage, Duncan Creek Watershed (LC18)
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Glen Loch Flowage, Duncan Creek Watershed (LC18)
Glen Loch Flowage (2151000)
39.06 Acres
Natural Community
Natural communities (stream and lake natural communities) represent model results that use predicted flow and temperature based on landscape features and related assumptions. Ranges of flow and temperature associated with specific aquatic life communities (fish, macroinvertebrates) help biologists identify appropriate resource management goals. Wisconsin Natural Communities.
Impounded Flowing Water
Year Last Monitored
This is the most recent date of monitoring data stored in SWIMS. Additional surveys for fish and habitat may be available subsequent to this date.
2016
Fair
 
Chippewa
Trout Water 
Trout Waters are represented by Class I, Class II or Class III waters. These classes have specific ecological characteristics and management actions associated with them. For more information regarding Trout Classifications, see the Fisheries Trout Class Webpages.
No
Outstanding or Exceptional 
Wisconsin has designated many of the state's highest quality waters as Outstanding Resource Waters (ORWs) or Exceptional Resource Waters (ERWs). Waters designated as ORW or ERW are surface waters which provide outstanding recreational opportunities, support valuable fisheries and wildlife habitat, have good water quality, and are not significantly impacted by human activities. ORW and ERW status identifies waters that the State of Wisconsin has determined warrant additional protection from the effects of pollution. These designations are intended to meet federal Clean Water Act obligations requiring Wisconsin to adopt an 'antidegradation' policy that is designed to prevent any lowering of water quality - especially in those waters having significant ecological or cultural value.
No
Impaired Water 
A water is polluted or 'impaired' if it does not support full use by humans, wildlife, fish and other aquatic life and it is shown that one or more of the pollutant criteria are not met.
No

Fish and Aquatic Life

Current Use
The use the water currently supports. This is not a designation or classification; it is based on the current condition of the water. Information in this column is not designed for, and should not be used for, regulatory purposes.
Impounded Flowing Water
This classification includes waterbodies created by dams (mill ponds, reservoirs, flowages, and other impoundments) with a residence time of 14 days or more (under summer (June – Sept) mean low flow conditions with a 1 in 10 year recurrence interval (US EPA 2000)). Many natural lakes also have dams or water level control structures. However, to be included in the Impounded Flowing Waters category, the dam or water level control structure, must account for more than half of a waterbody’s maximum depth. Impoundments with a residence time of less than 14 days should be covered under the rivers and stream assessment methodology process.
Attainable Use
The use that the investigator believes the water could achieve through managing "controllable" sources. Beaver dams, hydroelectric dams, low gradient streams, and naturally occurring low flows are generally not considered controllable. The attainable use may be the same as the current use or it may be higher.
Default FAL
Fish and Aquatic Life - Default Waters do not have a specific use designation subcategory but are considered fishable, swimmable waters.
Designated Use
This is the water classification legally recognized by NR102 and NR104, Wis. Adm. Code. The classification determines water quality criteria and effluent limits. Waters obtain designated uses through classification procedures.
Default FAL
Fish and Aquatic Life - Default Waters do not have a specific use designation subcategory but are considered fishable, swimmable waters.

Overview

These Duncan Creek impoundments are generally shallow, eutrophic, and support a warm water
fishery. The impoundments have very high nutrient levels that result in nuisance growth of
duckweed and excessive sedimentation that is filling in the impoundments. The impoundments are
included in the Duncan Creek Priority Watershed Program, whch will control sources of polluted
runoff. Reductions in sediment delivery will lengthen the useful life of the impoundments. It is
unlikely that nutrient inputs can be reduced enough through the priority watershed project to
result in decreased growth of duckweed (Schreiber 1992).
The submergent aquatic plants of these impoundments are limited to species adapted to low light,
eutrophic conditions and high siltation rates. These lakes also contain large mats of duckweed
covering more than half the surface area at times. Physical removal of duckweed and harvesting of
other aquatic plants are management options for control of nuisance levels of rooted aquatic plants
(Borman) .

Date  1996

Author   Aquatic Biologist

Historical Description

Source: 1963, Surface Water Resources of Chippewa County Glen Lock Flowage T29N, R8W, Sections 30 and 31

It is a soft water, drainage impoundment on Duncan Creek at Chippewa Falls. It has a 21 -foot headwater control structure on its outlet operated by the Chippewa Falls Pure Ice Co. It is managed for largemouth bass and pan fish. Muskrats are common as well as a few nesting mallards. A golf course and ten cottages occupy the east side of the lake. The west side lake shore of 1.23 miles is in city ownership as part of Irvine Park. An access road with limited parking is located near the outlet.

Surface Acres = 44.5, S.D.F. = 3.30, Maximum Depth = 20 feet

Date  1963

Author   Surface Water Inventory Of Wisconsin

Glen Loch Flowage, Duncan Creek Watershed (LC18) Fish and Aquatic LifeGlen Loch Flowage, Duncan Creek Watershed (LC18) RecreationGlen Loch Flowage, Duncan Creek Watershed (LC18) Fish Consumption

Condition

Wisconsin has over 84,000 miles of streams, 15,000 lakes and milllions of acres of wetlands. Assessing the condition of this vast amount of water is challenging. The state's water monitoring program uses a media-based, cross-program approach to analyze water condition. An updated monitoring strategy (2015-2020) is now available. Compliance with Clean Water Act fishable, swimmable standards are located in the Executive Summary of Water Condition in 2018. See also the 'monitoring and projects' tab.

Reports

2018 List of Healthy (Category 2) Waters
Final Assessment Data from TSI Package and Assessment Units 2018
Rusty Crawfish Identification 2009
Glen Loch Flowage, Chippewa County - Aquatic Plant Sampling Map (30 mpts)
Glen Loch_Chippewa_2151000_(1991-2006)_AquaticPlant Report
Glen Loch Flowage, Chippewa County - Garmin Text File
Chippewa County Surface Water Resources 1963 Part 1 of 2
Chippewa County Surface Water Resources 1963 Part 2 of 2

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

Project Name (Click for Details)Year Started

Monitoring Projects

WBICOfficial Waterbody NameStation IDStation NameEarliest Fieldwork DateLatest Fieldwork DateView StationView Data
2151000Glen Loch Flowage10001049Glen Loch Lake8/29/200010/3/2016MapData
2151000Glen Loch Flowage093114Glen Loch Lake - Deepest Point3/14/19918/27/1992MapData

Watershed Characteristics

Glen Loch Flowage is located in the Duncan Creek watershed which is 191.44 mi². Land use in the watershed is primarily agricultural (44.40%), forest (21%) and a mix of grassland (13.90%) and other uses (20.70%). This watershed has 270.37 stream miles, 185.45 lake acres and 6,971.50 wetland acres.

Nonpoint Source Characteristics

This watershed is ranked Not Available for runoff impacts on streams, Not Available for runoff impacts on lakes and High for runoff impacts on groundwater and therefore has an overall rank of High. 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.

Natural Community

Glen Loch Flowage is considered a Impounded Flowing Water under the state's Natural Community Determinations.

Natural communities (stream and lake natural communities) represent model results and DNR staff valiation processes that confirm or update predicted conditions based on flow and temperature modeling from historic and current landscape features and related variables. Predicated flow and temperatures for waters are associated predicated fish assemblages (communities). Biologists evaluate the model results against current survey data to determine if the modeled results are corect and whether biological indicators show water quaity degradation. This analysis is a core component of the state's resource management framework. Wisconsin's Riverine Natural Communities.

This classification includes waterbodies created by dams (mill ponds, reservoirs, flowages, and other impoundments) with a residence time of 14 days or more (under summer (June – Sept) mean low flow conditions with a 1 in 10 year recurrence interval (US EPA 2000)). Many natural lakes also have dams or water level control structures. However, to be included in the Impounded Flowing Waters category, the dam or water level control structure, must account for more than half of a waterbody’s maximum depth. Impoundments with a residence time of less than 14 days should be covered under the rivers and stream assessment methodology process.