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
- 2022
- Release Status
- Final
- Overall IR
- 1 - All designated uses are met.
- Trend
- Stable
- Created
- 12/10/2021 8:23:40 AM
- Updated
- 12/10/2021 8:26:26 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.
Data Sources: 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 - 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 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 Site
ID Date Drainage
Area (mi2) Ecoregion Major
Drainage BM
Sample Gear BMIBI
score BMIBI
Class 40a
BMIBI BIT BMIBI
Pass/Fail 37 8/6/20 97.4 40a MO Surber 57 Good 41 Pass 37 7/15/19 97.4 40a MO Surber 48 Fair 41 Pass 37 7/16/18 97.4 40a MO Hess 53 Fair 41 Pass 37 7/20/17 97.4 40a MO Hess 58 Good 41 Pass 37 8/15/16 97.4 40a MO Hess 63 Good 41 Pass Fish: Site
ID Date Drainage
Area (mi2) Ecoregion Major
Drainage Riffle
Stream? FIBI
score FIBI
Class 40a
FIBI BIT FIBI
Pass/Fail 37 8/6/20 97.4 40a MO NA 40 Fair 33 Pass 37 7/15/19 97.4 40a MO NA 37 Fair 33 Pass 37 7/16/18 97.4 40a MO NA 33 Fair 33 Pass 37 7/20/17 97.4 40a MO NA 43 Fair 33 Pass 37 8/15/16 97.4 40a MO NA 53 Good 33 Pass Overall: Community Assessment
Type Assessment
Result Support
Level IR
Category Reason Benthic Macroinvertebrates Monitored Pass
(5/5) Full Fish Monitored Pass
(5/5) Full 1 Assessment was monitored because the samples used to
complete the Overall Monitored Pass Full assessment were collected in the last five years.
Presumptive Class A1 - Indicator Bacteria: No Data
Class BWW2 - Conventional Parameters:
Class BWW2 - Biological Sampling:
Benthic Macroinvertebrates: