Badger Creek Lake IA 04-LDM-1100
Madison County S11T77NR27W 9 mi. E of Earlham.
- Cycle
- 2022
- Release Status
- Final
- Overall IR
- 4 - Water is impaired or threatened and a TMDL has been completed or is not needed.
- Trophic
- Hypereutrophic
- Trend
- Stable
- Created
- 12/28/2021 11:07:24 AM
- Updated
- 2/17/2022 9:18:28 AM
| Cycle Added | Class | Cause | Data Source | Rationale |
|---|---|---|---|---|
| 2018 | Class A1 | pH | Ambient monitoring: Iowa DNR-lakes | New data: WQ improvement (chemical / physical / bacterial) |
| 2018 | Class BLW | pH | Ambient monitoring: Iowa DNR-lakes | New data: WQ improvement (chemical / physical / bacterial) |
The Class A1 use was assessed (monitored) as “not supported” due to poor water transparency and algal blooms that violated the state’s narrative criteria protecting against aesthetically objectionable conditions. The Class BLW use was assessed (evaluated) as “WINOFI" based on the results of a fish kill investigation and information from the DNR Fisheries Bureau. The Class HH (fish consumption) use was assessed (evaluated) as “fully supported” based on fish tissue sampling data. Note: A TMDL for siltation and nutrients, covering algal growth (including nuisance growth of cyanobacteria), at Badger Creek Lake was prepared by DNR and approved by EPA in 2003. Because the Section 303(d) impairment due to pH was not addressed in the TMDL, this waterbody was will remain in Category 5a (impaired; TMDL required) for this assessment/listing cycles.
Data Sources: Data
Source Data
Source ID Data
Type Data
Age Site
ID Site Name Site Description Iowa
DNR 6 WQ CY
2016-2020 22610004 Badger Creek Max Depth Lake Deep Point Iowa
DNR 6 WQ CY
2016-2019 14000187 Badger Creek Lake 1.5 TMDL Sampling Site Iowa
DNR 6 WQ CY
2016-2019 11610009 Badger Creek Lake - lake inlet at
Quail Ridge (12) TMDL Sampling Site Iowa
DNR 6 FT See
Below 187 Badger Creek Near Booneville
Class A1 - Indicator Bacteria: No Data 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 22610004 6 15 / 5 8 9.3 8.6 1 4 NO Monitored Full Badger Creek Lake was assessed as "not supported" for
the 2018 assessment/listing cycle due to frequent violations of the state Class
A1 criterion for pH. Based on DNR’s assessment methodology 2 consecutive
assessment/listing cycles without significantly greater than 10% of the samples
violating the single-sample maximum criterion are necessary to propose
delisting based on pH violations. There were less than 10% of the samples
exceeding the single-sample maximum criterion for the 2020 or current 2022 assessment
listing cycle. Therefore, the impairment for pH is suggested for delisting for
the 2022 assessment/listing cycle. Class A1 - Lake TSI's: Site ID Data Source ID Parameter Name # Samples / # Years Minimum Value Maximum Value Median Value Median TSI Violation? Assessment Type Support Level 14000187 6 Chlorophyll a TSI 25 / 4 44 86 74 YES Monitored Not 22610004 6 Chlorophyll a TSI 40 / 5 37 86 70 YES Monitored Not 22610004 6 Secchi TSI 15 / 5 49 83 70 YES Monitored Not 11610009 6 Total Phosphorus TSI 20 / 4 61 98 83 NA NA NA 14000187 6 Total Phosphorus TSI 24 / 4 57 92 82 NA NA NA 22610004 6 Total Phosphorus TSI 39 / 5 57 92 81 NA NA NA 22610004 6 Inorganic suspended solids 15 / 5 0.3 85 3 NA NA NA Class BLW - 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 22610004 6 Ammonia 15 / 5 0.0003 0.324 0.09 NA 0 / 0 4 NO Monitored Full 22610004 6 Dissolved Oxygen 14 / 5 4 16.8 10 1 NA / NA 4 NO Monitored Full 22610004 6 pH 15 / 5 8 9.3 8.6 1 NA / NA 4 NO Monitored Full 22610004 6 Temperature 15 / 5 16.2 31.2 24.6 0 NA / NA 4 NO Monitored Full Badger Creek Lake was assessed as "not supported" for
the 2018 assessment/listing cycle due to frequent violations of the state Class
BLW criterion for pH. Based on DNR’s assessment methodology 2 consecutive
assessment/listing cycles without significantly greater than 10% of the samples
violating the single-sample maximum criterion are necessary to propose
delisting based on pH violations. There were less than 10% of the samples
exceeding the single-sample maximum criterion for the 2020 or current 2022 assessment
listing cycle. Therefore, the impairment for pH is suggested for delisting for
the 2022 assessment/listing cycle. Class BLW - Fish Kill Assessment: The Class BLW aquatic life use assessment based on the 2011 fish kill placed this segment in Category 3b. This assessment was “evaluated” because: (1) the cause of the fish kill was not identified or (2) the fish kill was attributed to a non-pollutant cause (e.g., winterkill). Segments assessed using “evaluated” assessments are placed in Category 3b and are added to the state list of Waters In Need Of Further Investigation (WINOFI). If no additional fish kills are reported in this segment for a 10-year period (2021), the Category will be changed from 3b to 3a (not assessed). Details about the 2011 fish kill can be found
here: https://programs.iowadnr.gov/fishkill/Events/846 Class HH - Fish
Tissue Sampling: Site ID Biopart Year Species # in sample / # of samples Avg Length (cm) (Avg) Hg (ppm) Chlordane (ppm) Sum PCBs (ppm) 187 fillet 2011 black bullhead 4 32.1 0.032 0.03 0.09 187 tissue plug 2011 largemouth bass 5 34.4 0.124
Support Level Full