Wapsipinicon River IA 01-WPS-350
from L. Wapsipinicon R. (S3 T94N R13W Chickasaw Co.) to confluence with unnamed tributary in NW 1/4 S22 T96N R14W Chickasaw Co.
- Cycle
- 2026
- Current Phase
- Public Comment
- Overall IR
- 2 - Some of the designated uses are met but there is insufficient data to determine if remaining designated uses are met.
- Trend
- Stable
- Created
- 10/27/2025 3:09:28 PM
- Updated
- 12/2/2025 9:21:27 AM
The Class BWW1 use was assessed as “fully supported” based on biological sampling data and continuous dissolved oxygen monitoring data. All other designated uses were "not assessed."
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 WQ CY 2021 412 Wapsipinicon River Iowa DNR 6 BIO See Below 11 Wapsipinicon River Twin Ponds Park Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47c BMIBI BIT BMIBI Pass/Fail 11 9/26/24 161.9 47c MS Art Sub 62 Good 52 Pass 11 8/1/23 161.9 47c MS Art Sub 71 Good 52 Pass 11 9/16/20 161.9 47c MS Art Sub 80 Excellent 52 Pass Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47c FIBI BIT FIBI Pass/Fail 11 8/1/23 161.9 47c MS No 68 Good 44 Pass 11 9/16/20 161.9 47c MS No 63 Good 44 Pass Community Assessment Type Assessment Result Support Level IR Category Reason Benthic Macroinvertebrates Monitored Pass (3/3) Full Fish Monitored Pass (2/2) Full Assessment was monitored because the assessment was Overall Monitored Pass Full 1 based on samples collected in a recent five-year period. Site ID Data Source ID # Days Monitoring (2021) DO Criteria Type # 2021 violations / Violations needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 5/6 No 412 6 29 16 hr 1/6 No Evaluated Full
Class A1 – No Data
Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall:
Class BWW1- Continuous DO Monitoring:
Class HH – No Data