Long Creek IA 05-GRA-1364
mouth (S8 T69N R28W Decatur Co.) to confluence with East Long Cr. in S36 T71N R27W Clarke Co.
- Cycle
- 2020
- Release Status
- Final
- Overall IR
- 1 - All designated uses are met.
- Trend
- Stable
- Created
- 9/17/2020 9:22:18 AM
- Updated
- 10/19/2020 6:55:13 AM
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 sampling data and on water quality monitoring data.
Sources of Data: Data
Source Data
Source ID Data
Type Data
Age Site
ID Site
Name Site
Description Iowa
DNR 6 BIO See
Below 37 Long
Creek DeKalb
SWA – Van Wert USGS 11 WQ CY
2013 6897937 Long
Creek near Van Wert
Presumptive Class A1 - Indicator
Bacteria: No Data Presumptive Class A - pH: Site
ID Data
Source ID #
Samples / # Years Maximum
Value Mean
Value Median
Value #
Violations %
Violations Significantly
>10% Violations Assessment
Type Support
Level 6897937 11 11
/ 1 8.2 8 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 6897937 11 Ammonia 11
/ 1 0.17 0.04 0.02 0
/ 0 0%
/ 0% No Evaluated Full 6897937 11 Chloride 11
/ 1 7.6 6 6.3 0
/ 0 0%
/ 0% No Evaluated Full 6897937 11 Dissolved
oxygen 11
/ 1 10.2 8.6 8.6 NA
/ 0 NA
/ 0% No Evaluated Full 6897937 11 pH 11
/ 1 8.2 8 8 0
/ NA 0%
/ NA No Evaluated Full 6897937 11 Sulfate 11
/ 1 34 24 25 0
/ NA 0%
/ NA No Evaluated Full 6897937 11 Temperature 11
/ 1 31.1 23.3 22.9 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 40a BMIBI BIT BMIBI Pass/ Fail 37 7/16/18 97 40a MO/WW Hess 53 Fair 41 Pass 37 7/20/17 97 40a MO/WW Hess 58 Good 41 Pass 37 8/15/16 97 40a MO/WW Hess 63 Good 41 Pass 37 7/16/14 97 40a MO/WW Hess 52 Fair 41 Pass Fish: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal Riffle Stream? FIBI score FIBI Class 40a FIBI BIT FIBI Pass/ Fail 37 7/16/18 97 40a MO/WW NA 33 Fair 33 Pass 37 7/20/17 97 40a MO/WW NA 43 Fair 33 Pass 37 8/15/16 97 40a MO/WW NA 53 Good 33 Pass 37 7/16/14 97 40a MO/WW NA 16 Poor 33 Fail Overall: Community Assessment Type Assessment Result Support Level Earned IR Category Actual IR Category Reason Benthic
Macroinvertebrates Monitored Pass (4/4) Full Fish Monitored Pass (3/4) Full Overall Monitored Pass Full 1 1 Assessment
is monitored because all samples used were collected in the last five years.