Beaver Creek IA 04-UDM-1235
from confluence with Slough Cr. to confluence with unnamed tributary in S29 T84N R28W Boone Co.
- Cycle
- 2020
- Release Status
- Final
- Overall IR
- 1 - All designated uses are met.
- Trend
- Unknown
- Created
- 9/15/2020 1:34:46 PM
- Updated
- 10/12/2020 2:22:51 PM
The presumptive Class A1 use was assessed as "fully supported" based on limited pH sampling data. The Class BWW2 use was assessed as "fully supported” based on biological sampling data and water quality monitoring data.
Sources of Data: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description USGS WQ CY 2013 5481820 Beaver Creek at
Bouton
Iowa DNR 6 BIO See Below 226 Beaver Creek Buffalo Grove SWMA Presumptive Class A1 - pH: Site ID Data Source ID # Samples / # Years Maximum Value Mean Value Median Value # Violations % Violations Significantly >10% Violations Assessment Type Support Level 5481820 11 11 / 1 8.2 8.02 8 0 0% No Evaluated Full Class BWW2 -
Conventional Parameters: Site ID Data Source ID Parameter Name # Samples / # Years Maximum Value Mean Value Median Value # Acute / Chronic Violations % Acute/ Chronic Violations Significantly >10% Violations Assessment Type Support Level 5481820 11 Ammonia 11 / 1 0.05 0.02 0.01 0 / 0 0% / 0% No Evaluated Full 5481820 11 Chloride 11 / 1 35.3 28.4 27.9 0 / 0 0% / 0% No Evaluated Full 5481820 11 Dissolved oxygen 11 / 1 11.4 8.5 8.7 NA / 0 NA / 0% No Evaluated Full 5481820 11 pH 11 / 1 8.2 8.02 8 0 / NA 0% / NA No Evaluated Full 5481820 11 Sulfate 11 / 1 51.7 30.1 28.4 0 / NA 0% / NA No Evaluated Full 5481820 11 Temperature 11 / 1 25.5 20.3 20.2 0 / 0 0% / 0% No Evaluated Full Class
BWW2 - Biological Sampling: Benthic
Macroinvertebrates: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal BM Sample Gear BMIBI score BMIBI Class 47b BMIBI BIT BMIBI Pass/ Fail 226 8/3/17 188 47b MS/WW Surb 67 Good 62 Pass 226 8/11/11 188 47b MS/WW Hess 67 Good 62 Pass Fish: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal Riffle Stream? FIBI score FIBI Class 47b FIBI BIT FIBI Pass/ Fail 226 8/3/17 188 47b MS/WW No 60 Good 32 Pass 226 8/11/11 188 47b MS/WW No 54 Good 32 Pass Overall: Community Assessment Type Assessment Result Support Level Earned IR Category Actual IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (2/2) Full Fish Evaluated Pass (2/2) Full Overall Evaluated Pass Full 1 1 Assessment
is evaluated because it included samples not collected in the last five years.
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