Wapsipinicon River IA 01-WPS-342
from Pine Cr. (S28 T88N R8W Buchanan Co.) to confluence with Harter Cr. at Independence in NW 1/4 S34 T89N R9W Buchanan Co.
- Assessment Cycle
- 2024
- Release Status
- Pending
- Data Collection Period
- Overall IR Category
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 11/1/2023 8:12:25 AM
- Updated
- 1/12/2024 2:41:13 PM
Assessment conducted in accordance with Iowa's 2024 IR methodology.
Use Support
Class A1
Not Assessed
Class BWW1
Not Assessed
Class HH
Not Supported
Fish Consumption Advisory: Mercury
Support Level
Not Supported
Impairment Code
5a - Pollutant-caused impairment. TMDL needed.
Cause Magnitude
Moderate
Status
Continuing
Source
Unknown: Source Unknown
Source Confidence
N/A
Cycle Added
2022
Impairment Rationale
Fish consumption advisory in effect: no more than 1 meal/week
Data Source
Fish contaminant monitoring: Iowa DNR
TMDL Priority
Tier IV
Impairment Delistings
No delistings for this assessment cycle.
Documentation
Assessment Summary
The Class HH (fish consumption) use was assessed as "not supported" because a historic one meal/week mercury consumption advisory exists on this segment. All other designated uses were "not assessed."
Assessment Explanation
Class A1 - No Data Class BWW1 - No Data Class HH - Fish Tissue Sampling:
A historic one meal/week mercury consumption advisory exists on this
segment. Based on IR Methodology, the Class HH (fish consumption) use was
assessed as “not supported.”
Monitoring and Methods
Assessment Key Dates
None listed
Methods
| 150 | Monitoring data more than 5 years old |
| 260 | Fish tissue analysis |