Impaired Water - Unnamed (Swinns Valley Creek)
Buffalo County, Wisconsin
BT02
1776000
0.00 - 8.49
8.49
Water is impaired due to one or more pollutants and associated quality impacts.
Notes
TMDL has been approved 2003.
The only significant stream in the subwatershed is Swinns Valley Creek. Swinns Valley Creek is a 7.5-mile tributary of the Trempealeau River.
The segment from the mouth (mile 0) to mile 5.2 is listed on the 303(d) list as impacted by sedimentation and loss of instream habitat. The Swinns Valley subwatershed is 15.8 sq. miles and drains south to the Trempealeau River west of Arcadia. The primary source
of the impairment is cropland erosion. The stream is classified as a Warm Water Forage Fishery; however, the 1990 survey (1) found 11 brown trout ranging from 3-16.4 inches in length. Three different age classes of trout were found, including evidence of natural reproduction in the headwater area. Seven minnow and other forage species were also found. The stream HBI was 2.72, indicating no apparent organic pollution, and the Habitat Rating was "fair". The potential use of Swinns Valley Creek is a coldwater Class II trout fishery.

This water was assessed during the 2014 listing cycle; biological sample data met 2014 WisCALM listing thresholds for the Fish and Aquatic Life use (i.e. macroinvertebrate or fish Index of Biotic Integrity (IBI) average scored in the fair to excellent condition categories).

This water was assessed during the 2018 listing cycle; available biological do not indicate impairment according to 2018 WisCALM listing criteria for the Fish and Aquatic Life use (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category); new temperature data did not indicate impairment.
Assessments during the 2020 listing cycle show high phosphorus levels that overwhelmingly exceed WisCALM thresholds. Fish sample data, however, showed fair condition.
Listing Details
Pollutant
Total Phosphorus
Listed For
Fish and Aquatic Life
Impairments
High Phosphorus Levels
Current Use
WWFF - Warmwater Forage Fishery
Listing Status
Addition
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Low
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
2020-021
Listing Date
4/1/2020
Impaired Water Notes
This water was assessed during the 2020 listing cycle; new total phosphorus sample data overwhelmingly exceed 2020 WisCALM listing criteria for the Fish and Aquatic Life use, however, available biological data do not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category).
Date
7/16/2019

 
Pollutant
Sediment/Total Suspended Solids
Listed For
Fish and Aquatic Life
Impairments
Degraded Habitat
Current Use
WWFF - Warmwater Forage Fishery
Listing Status
TMDL Approved
Attainable Use
WWFF - Warmwater Forage Fishery
Priority
Not Applicable
Designated Use
WWFF - Warmwater Forage Fishery
303(d) ID
479
Listing Date
4/1/1998
Impaired Water Notes
The only significant stream in the subwatershed is Swinns Valley Creek. Swinns Valley Creek is a 7.5-mile tributary of the Trempealeau River. The segment from the mouth (mile 0) to mile 5.2 is listed on the 303(d) list as impacted by sedimentation and loss of instream habitat. The Swinns Valley subwatershed is 15.8 sq. miles and drains south to the Trempealeau River west of Arcadia. The primary source of the impairment is cropland erosion. The stream is classified as a Warm Water Forage Fishery; however, the 1990 survey (1) found 11 brown trout ranging from 3-16.4 inches in length. Three different age classes of trout were found, including evidence of natural reproduction in the headwater area. Seven minnow and other forage species were also found. The stream HBI was 2.72, indicating no apparent organic pollution, and the Habitat Rating was "fair". The potential use of Swinns Valley Creek is a coldwater Class II trout fishery.
Date
12/26/2002

Impaired Water Notes
Middle Trempealeau River sediment TMDLs approved by the USEPA March 13, 2003.
Date
3/13/2003