Bear Creek IA 01-MAQ-34
from Beers Cr. (Jackson Co.) to confluence with unnamed tributary in W1/2 S28T84NR2W Jones Co.
The presumptive Class A1 use was assessed as "fully supported" based on pH sampling data. The Class BWW2 use was assessed as "fully supported" based on biological and water quality sampling data.
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site
Name Site
Description Iowa DNR 6 WQ CY 2022-2024 12490001 Bear
Creek-Eden Valley Co Park- Baldwin
Iowa DNR 6 BIO See Below 105 Bear
Creek Eden
Valley County Park - Baldwin Presumptive Class A1 - Indicator Bacteria: No Data Presumptive 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 12490001 6 15 / 3 7.7 8.2 8 0 4 NO MONITORED 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 12490001 6 Chloride 15 / 2 15 25 20 NA 0 / 0 4 NO MONITORED FULL 12490001 6 Dissolved Oxygen 15 / 3 7 9.7 8.6 0 NA / NA 4 NO MONITORED FULL 12490001 6 pH 15 / 3 7.7 8.2 8 0 NA / NA 4 NO MONITORED FULL 12490001 6 Sulfate 15 / 2 12 19 17 0 NA / NA 4 NO MONITORED FULL 12490001 6 Temperature 15 / 3 13.9 23.7 18 0 NA / NA 4 NO MONITORED FULL Site ID Data Source ID Parameter Name # Samples / # Years Maximum Value Mean Value Median Value # Acute / Chronic Violations >1 Acute / Chronic Violation Assessment Type Support Level 12490001 6 Ammonia 15 / 3 0.08 0.03 0.02 0 / 0 NO MONITORED FULL Benthic Macroinvertebrates: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47f BMIBI BIT BMIBI Pass/Fail 105 10/1/2024 69.3 47f MS Hess 60 Good 51 Pass 105 9/3/2024 69.3 47f MS Hess 78 Excellent 51 Pass 105 7/22/2024 69.3 47f MS Hess 78 Excellent 51 Pass 105 7/24/2023 69.3 47f MS Art Sub 63 Good 51 Pass 105 9/22/2022 69.3 47f MS Art Sub 63 Good 51 Pass 105 9/1/2021 69.3 47f MS Hess 75 Good 51 Pass 105 7/20/2020 69.3 47f MS Hess 71 Good 51 Pass Fish: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47f FIBI BIT FIBI Pass/Fail 105 9/3/24 69.3 47f MS NA 78 Excellent 36 Pass 105 7/23/23 69.3 47f MS NA 83 Excellent 36 Pass 105 9/22/22 69.3 47f MS NA 77 Excellent 36 Pass 105 9/1/21 69.3 47f MS NA 76 Excellent 36 Pass 105 7/20/20 69.3 47f MS NA 69 Good 36 Pass Overall Assessment: Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Monitored Pass (7/7) Full Fish Monitored Pass (5/5) Full Assessment was
monitored because multiple samples Overall Monitored Pass Full 1 collected in the last
five years were used for the assessment.
Class BWW2 - Binomial Parameters:
Class BWW2 - Toxic Parameters:
Class BWW2 –
Biological Sampling: