Ashton Creek IA 06-LSR-2048
from tributary(T89N R41W Sec3 Ida Co.) to headwaters (T88N R41W Sec2) Ida 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 8:13:28 AM
- Updated
- 12/28/2023 11:06:41 AM
| Cycle Added | Class | Cause | Data Source | Rationale |
|---|---|---|---|---|
| 2010 | Class BWW1 | Organic Enrichment: Low Dissolved Oxygen | Ambient monitoring: Iowa DNR-rivers | New data: WQ improvement (chemical / physical / bacterial) |
The presumptive Class A1 use was assessed as “fully supported” based on pH sampling data. The presumptive Class BWW1 use was assessed as “WINOFI” based on biological sampling data.
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site
Name Site
Description Iowa DNR 6 WQ CY 2021-2022 16470003 Ashton
Creek - Site 209
Iowa DNR 6 BIO See Below 603 Ashton
Creek Washta
(REMAP #209) 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 16470003 6 10 / 2 7.26 7.87 7.64 0 3 NO Mon Full 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 16470003 6 Dissolved Oxygen 10 / 2 4.4 10.5 7.4 1 NA / NA 3 NO Mon Full 16470003 6 pH 10 / 2 7.26 7.87 7.64 0 NA / NA 3 NO Mon Full 16470003 6 Temperature 10 / 2 4.34 18.36 14.39 0 NA / NA 3 NO Mon Full BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal BM Sample Gear BMIBI score BMIBI Class 47a BMIBI BIT BMIBI Pass/Fail 603 7/7/06 6.5 47a MO/WW ArtSub 20 Poor 51 Fail 603 7/7/06 6.5 47a MO/WW Surber 26 Poor 51 Fail BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal Riffle Stream? FIBI score FIBI Class 47a FIBI BIT FIBI Pass/Fail 603 7/7/06 6.5 47a MO/WW NA 1 Poor 43 Fail Community Assessment Type Assessment Result Support Level IR Category Reason Benthic Macroinvertebrates Evaluated Fail (0/2) WINOFI Fish Evaluated Fail (0/1) WINOFI Assessment was evaluated because it was based on a single year
and Overall Evaluated Fail WINOFI 3bu the
drainage area of the site was smaller than the calibrated range.
Presumptive Class A1 - Indicator Bacteria: No Data
Presumptive Class A1 – pH:
Class BWW1 - Binomial Parameters:
Presumptive Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall: