Grand Lake (Millpond), Lower Grand River Watershed (UF11)
Grand Lake (Millpond), Lower Grand River Watershed (UF11)
Grand Lak (Millpond) (161100)
241.92 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.
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.
Green Lake
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.
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.
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.

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.
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.
Fish and Aquatic Life - waters that do not have a specific use designation subcategory assigned but which 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.


Grand Lak (Millpond), in the Lower Grand River Watershed, is a 241.92 acre lake that falls in Green Lake County. This lake is managed for fishing and swimming and is currently not considered impaired.

Date  2011

Author   Aquatic Biologist

Historical Description

Source: 1971, Surface Water Resources of Green Lake County Grand Lake T-14-N, R-11, 12-E, Sections 7, 18, 24 Surface Acres = 234.2; S.D.F. = 2.24 Maximum Depth = 7 feet.

This is a large, hard water impoundment on the Grand River located in the Village of Kingston. The dam is maintained and used by a local feed mill operator as a source of power. The littoral bottom material consists mostly of sand with silt deposits building up in many areas. Boulders and gravel beds are also present. Developments include thirty-five dwellings and two resorts. Two boat rentals are located within the village limits. A county access with parking is available on the northwest shore. The majority of the shoreline is marsh and pasture. Grand Lake has a troubled background. Although known for good fishing, siltation and carp combined to decrease the recreational value of this impoundment. However, conflicting interests between sportsmen and property owners prevented effective management. In 1969, the pond was drained and the entire Grand River system upstream was chemically treated to remove rough fish and undesirable panfish populations. The result was improved water clarity, and stocking provided a sport fishery consisting of largemouth bass, northern pike, bluegill, walleye, and perch. The presence of young-of-the-year carp and white suckers indicate the project was not completely successful. However, the improved predator population may keep rough fish populations under control for some time. Increased rooted aquatic plant growth for better waterfowl and game habitat developed after carp removal. The lake is heavily used by mallards, teal, and other dabblers as well as great blue herons and other wading birds. Muskrats are also present. The marsh outside the Kingston corporate limits is used for waterfowl hunting.

Date  1971

Author   Surface Water Inventory Of Wisconsin

Grand Lake (Millpond), Lower Grand River Watershed (UF11) Fish and Aquatic LifeGrand Lake (Millpond), Lower Grand River Watershed (UF11) RecreationGrand Lake (Millpond), Lower Grand River Watershed (UF11) Fish Consumption


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.



Shoreland Monitoring, Assessment, Inventory
Green Lake County will conduct a land use and environmental resource inventory of the watershed surrounding Green Lake, Little Green Lake, and Lake Puckaway. The information from the study will be used to update the existing zoning and shoreland protection ordinances and to assess the need for a storm water management ordinance in the County, the stormwater management ordinance, if its need is determined, will be written

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 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

Watershed Characteristics

Grand Lake (Millpond) is located in the Lower Grand River watershed which is 109.39 miĀ². Land use in the watershed is primarily agricultural (44.50%), wetland (23.10%) and a mix of forest (15.90%) and other uses (16.50%). This watershed has 185.16 stream miles, 1,264.36 lake acres and 13,715.30 wetland acres.

Nonpoint Source Characteristics

This watershed is ranked Not Ranked for runoff impacts on streams, Not Ranked 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

Grand Lak (Millpond) is considered a Reservoir under the state's Natural Community Determinations.

Natural communities (stream and lake natural communities) represent model resultsand 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.

Fish Stocking