Cedar River IA 02-CED-457
from confluence with Bear Cr. (NE 1/4 S21 T84N R8W Linn Co.) to confluence with Hinkle Cr. in SW 1/4 S16 T85N R10W Benton Co.
- Cycle
- 2024
- Release Status
- Final
- Overall IR
- 2 - Some of the designated uses are met but there is insufficient data to determine if remaining designated uses are met.
- Trend
- Unknown
- Created
- 11/1/2023 8:12:44 AM
- Updated
- 12/21/2023 10:25:28 AM
The Class A1 use was assessed as “fully supported” based on pH monitoring data. The Class BWW1 use was assessed as "WINOFI" based on biological sampling 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 2021-2022 14000349 Cedar
River
Class A1 – pH: Site ID Data Source ID # Samples / # Years Minimum Value Maximum Value Mean Value # Violations Violations needed for impairment Violates Significantly >10% Rule? Assessment Type Support Level 14000349 6 10 / 2 8.08 8.77 8.57 0 3 NO Mon Full Class BWW1 - Binomial Parameters:
Site ID Data Source ID Parameter Name # Samples / # Years Minimum Value Maximum Value Mean Value # Violations # Acute / Chronic Violations Violations needed for impairment Violates Significantly >10% Rule? Assessment Type Support Level 14000349 6 Dissolved Oxygen 10 / 2 8.02 17.46 12.88 0 NA / NA 3 NO Mon Full 14000349 6 pH 10 / 2 8.08 8.77 8.57 0 NA / NA 3 NO Mon Full 14000349 6 Temperature 10 / 2 7.24 29.38 20.85 0 NA / NA 3 NO Mon Full Benthic
Macroinvertebrates: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47c BMIBI BIT BMIBI Pass/Fail 869 10/7/11 6238 47c MS Hess 45 Fair 70 Fail Community Assessment Type Assessment Result Support Level IR Category Reason Benthic Macroinvertebrates Evaluated Fail (0/1) WINOFI 3bu Assessment was
evaluated because the drainage area of the site was larger than calibrated
range.
Class A - Indicator Bacteria: No Data
Class BWW1 - Biological Sampling:
Overall Assessment: