Neosho Millpond, Rubicon River Watershed (UR11)
Neosho Millpond, Rubicon River Watershed (UR11)
Neosho Millpond (856800)
175.97 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.
Suspected Poor
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.
Aquatic Life
Waters that support fish and aquatic life communities (healthy biological communities).
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.


Neosho Millpond, in the Rubicon River Watershed, is a 175.96 acre lake that falls in Dodge County. This lake is managed for fishing and swimming and is currently not considered impaired.

Date  2011

Author   Aquatic Biologist

Historical Description

Source: 1965, Surface Water Resources of Dodge County Neosho Pond T10N, R17E, S29

A large, shallow impoundment of the Rubicon River created by an 11-foot dam at Neosho. The original dam and sawmill were constructed in 1845. The watershed was heavily wooded and little effort was made to remove the stumps from the area to be inundated, the trees being cut off at the waterline. The stumps and fallen trees prevented seining in later years when carp became a problem, which subsequently led to the removal of 1,096 stumps and 577 logsby a 33 man Work Progress Administration crew during the summer of 1939. Following deforestation of the watershed, erosion became a serious problem and the resultant siltation coupled with pollution from industrial and municipal sources in Hartford contributed to annual winterkill conditions. Carp became the most abundant species and the Wisconsin Conservation Department removed an average of 14,300 pounds per year in the period from 1950 to 1961. The pond was drained during the summer of 1955, but carp and pollution soon restored the pond to its previous condition. Ducks made considerable use of the lake that autumn. Today the fishery consists mainly of carp, bullheads, bluegills, largemouth bass, green sunfish and an occasional northern pike or walleye. A progressive local sportsmans club is largely responsible for the fine boat ramp and parking area on the south shore which provides public access. Water quality limits swimming, and boating has become popular in recent years. Watershed erosion remains a major problem, while the pollution has abated to some extent. Another drawdown accompanied by removal of bottom materials and chemical treatment to remove rough fish species would seem in order; but farming practices on adjacent land must be improved if lasting benefits are to be gained.

Surface Acres = 146, S.D.F. = 2.07, Maximum Depth = 6 feet

Date  1965

Author   Surface Water Inventory Of Wisconsin

Neosho Millpond, Rubicon River Watershed (UR11) Fish and Aquatic LifeNeosho Millpond, Rubicon River Watershed (UR11) RecreationNeosho Millpond, Rubicon River Watershed (UR11) 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 Ordinance
Dodge County Planning & Development Department is interested in revising the Dodge County Shoreland Zoning Regulations and adopting a "waterway" classification system to better regulate and manage the county's water resources.

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

Neosho Mill Pond is located in the Rubicon River watershed which is 79.15 miĀ². Land use in the watershed is primarily agricultural (45.10%), grassland (19.90%) and a mix of wetland (13.40%) and other uses (21.60%). This watershed has 127.08 stream miles, 592.86 lake acres and 6,453.66 wetland acres.

Nonpoint Source Characteristics

This watershed is ranked Medium 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

Neosho Millpond is considered a Reservoir 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.