Milwaukee, Ozaukee
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Yes
Fish and Aquatic Life
Overview
Un. Creek (Trinity Creek)(T09n R21e Se Ne 35), in the Milwaukee River South Watershed, is a 3.32 mile river that falls in Milwaukee and Ozaukee Counties. This river is managed for fishing and swimming and is currently considered impaired.
Date 2022
Author Ashley Beranek
Historical Description
T9N, R21E, Section 35, Surface Acres = 1.02, Length = 2.1 miles, Gradient = 2.38 feet per mile.
A small, slow moving drainage stream flowing eastward into the Milwaukee
River. It flows through an urban area in the lower region. The stream channel is
straightened and agricultural drainage is its major use. No sport fish are known to
be present.
From: Poff, Ronald J., Gernay, Ronald, and Threinen, C.W., 1964. Surface Water Resources of Ozaukee County:
Lake and Stream Classification Project. Wisconsin Conservation Department, Madison, WI.
Date 1964
Author Surface Water Inventory Of Wisconsin
Impaired Waters
Trinity Creek, from its mouth to West County Line Road (miles 0 to 3.1), was evaluated every two-year cycle from 2014 to 2022 for phosphorus and temperature, both of which were elevated resulting in placement on the Impaired Waters List. The phosphorus impairment is covered by the Milwaukee River TMDL, approved in 2018.
Date 2022
Author Ashley Beranek
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
Recommendations
Citizen-Based Stream Monitoring
Collect chemical, physical, and/or biological water quality data to assess the current overall stream health. The data can inform management decisions and may be used to identify impaired waters for biennial lists.
Citizen-Based Stream Monitoring
Collect chemical, physical, and/or biological water quality data to assess the current overall stream health. The data can inform management decisions and may be used to identify impaired waters for biennial lists.
Citizen-Based Stream Monitoring
Collect chemical, physical, and/or biological water quality data to assess the current overall stream health. The data can inform management decisions and may be used to identify impaired waters for biennial lists.
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 |
|---|
| 20400 | Unnamed | 10012582 | Trinity Creek (unnamed) West Of Bike Path/RR Tracks | 5/17/2006 | 1/1/2015 | Map | Data |
| 20400 | Unnamed | 10047915 | Trinity Creek at Mequon Nature Preserve | 1/19/2017 | 3/19/2017 | Map | Data |
| 20400 | Unnamed | 10033530 | Trinity Creek at Cedarburg Rd Mequon | 4/10/2011 | 10/9/2024 | Map | Data |
| 20400 | Unnamed | 10031112 | Unnamed Stream (Trinity Cr.) Site 2 | | | Map | Data |
| 20400 | Unnamed | 10014747 | Unnamed Creek (Trinity Creek) | | | Map | Data |
| 20400 | Unnamed | 413734 | Beaver Creek at 76th Street | 10/15/1992 | 10/15/1992 | Map | Data |
| 20400 | Unnamed | 10031115 | Trinity Creek Wetland Habitat Pond City of Mequon | | | Map | Data |
| 20400 | Unnamed | 10012483 | Trinity Creek at Baehr Rd. | 5/16/2006 | 1/1/2015 | Map | Data |
| 20400 | Unnamed | 10031111 | Unnamed Stream (Trinity Cr.) Site 1 | | | Map | Data |
|
Watershed Characteristics
Unnamed is located in the Milwaukee River South watershed which is 167.90 mi². Land use in the watershed is primarily suburban (27.40%), urban (24.80%) and a mix of agricultural (18%) and other uses (29.80%). This watershed has 203.63 stream miles, 13,038.94 lake acres and 5,996.03 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked High for runoff impacts on streams, High 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.