South Beaver Creek IA 02-CED-561
mouth (S25 T90N R17W Butler Co.) to confluence with Middle Fork South Beaver Cr. in S28T89R17W Grundy Co.
- Cycle
- 2022
- 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
- 12/15/2021 1:58:28 PM
- Updated
- 1/13/2022 9:23:02 AM
The presumptive Class A1 use was assessed as “WINOFI” due to violations of Iowa water quality criteria for indicator bacteria (E. coli). The Class BWW2 use was assessed as "fully supported" based on biological sampling data and water quality monitoring data.
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description CRWQ 23 WQ CY 2018-2020 99990077 South Beaver Creek
Iowa
DNR 6 BIO See
Below 54 South Beaver Creek Parkersburg Presumptive Class
A1 - Indicator Bacteria: Site ID Data Source ID # Samples per Year (2018/ 2019/2020) 2018 Geometric Mean 2019 Geometric Mean 2020 Geometric Mean Violates Annual Geometric Mean? # 2018 SSM violations / SSM Violations
needed for impairment # 2019 SSM violations / SSM Violations
needed for impairment # 2020 SSM violations / SSM Violations
needed for impairment Violates Annual SSM Significantly >10%
Rule? Assessment Type Support Level 99990077 23 5/5/5 849 502 417 YES 4 / NA 4 / NA 4 / NA NA Evaluated WINOFI Class A – 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 99990077 23 14 / 3 7.33 8.26 7.95 0 4 NO Monitored Full Class BWW2 -
Conventional 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 99990077 23 Chloride 15 / 3 15.7 22.9 18.9 NA 0 / 0 4 NO Monitored Full 99990077 23 Dissolved Oxygen 15 / 3 7.1 11.1 8.3 0 NA / NA 4 NO Monitored Full 99990077 23 pH 14 / 3 7.33 8.26 7.95 0 NA / NA 4 NO Monitored Full 99990077 23 Sulfate 15 / 3 10.4 28.1 18.6 0 NA / NA 4 NO Monitored Full 99990077 23 Temperature 15 / 3 7.9 22.6 18 0 NA / NA 4 NO Monitored Full Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47c BMIBI BIT BMIBI Pass/ Fail 54 8/19/19 115.6 47c MS Art Sub 78 Excellent 70 Pass 54 9/10/14 115.6 47c MS Art Sub 41 Fair 70 Fail 54 8/13/01 115.6 47c MS Art Sub 74 Good 70 Pass Fish: Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47c FIBI BIT FIBI Pass/ Fail 54 8/19/19 115.6 47c MS No 58 Good 44 Pass 54 9/10/14 115.6 47c MS No 63 Good 44 Pass Overall: Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (2/3) Full
Fish Evaluated Pass (2/2) Full 1 Assessment was evaluated
because it included samples not collected in Overall Evaluated Pass Full the last five years.
Class BWW2 - Biological Sampling:
Benthic Macroinvertebrates: