Badger Creek Lake IA 04-LDM-1100
Madison County S11T77NR27W 9 mi. E of Earlham.
- Cycle
- 2024
- 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
- 11/1/2023 8:13:06 AM
- Updated
- 2/5/2024 8:57:06 AM
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 (monitored) as “fully supported." All other designated uses are “not assessed.” 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 all Section 303(d) impairments identified in this assessment/listing cycle are addressed by the TMDL, Badger Creek Lake is placed IR Category 4a (TMDL approved).
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site
Name Site
Description Iowa DNR 6 WQ CY 2018-2022 22610004 Badger
Creek Max Depth
Iowa DNR 6 WQ CY 2018-2019 14000187 Badger
Creek Lake 1.5
Iowa DNR 6 WQ CY 2018-2019 11610009 Badger
Creek Lake - lake inlet at Quail Ridge (12)
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 9.46 8.5 3 4 NO Mon Full 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 14 / 2 44 83 72 YES Eval Not 22610004 6 Chlorophyll a TSI 29 / 5 37 86 72 YES Mon Not 22610004 6 Secchi TSI 15 / 5 49 83 70 YES Mon Not 11610009 6 Total Phosphorus TSI 11 / 2 61 92 82 NA NA NA 14000187 6 Total Phosphorus TSI 14 / 2 63 92 80 NA NA NA 22610004 6 Total Phosphorus TSI 29 / 5 58 90 79 NA NA NA 22610004 6 Inorganic suspended solids 15 / 5 0.6 85 5 NA NA NA Class BLW - Binomial 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 Dissolved Oxygen 14 / 5 4 16.8 9.6 1 NA / NA 4 NO Mon Full 22610004 6 pH 15 / 5 8 9.46 8.5 3 NA / NA 4 NO Mon Full 22610004 6 Temperature 15 / 5 21.3 31.2 25.7 0 NA / NA 4 NO Mon Full Class BLW - Lake Planktonic Cyanobacteria: Site ID Data Source ID # Samples Maximum Cyanobacteria Wet Mass Maximum Cyanobacteria % Composition Median Cyanobacteria Wet Mass Median Cyanobacteria % Composition Median Cyanobacteria Concentration = 75th Percentile Assessment Type Support Level 22610004 6 5 235.7541288 100% 24.13168505 98% YES Evaluated 3b Class BLW - Toxic Parameters: 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 22610004 6 Ammonia 15 / 5 0.446 0.12 0.06 0 / 0 NO Mon Full Class BLW - Fish Kill
Assessment: The Class BLW aquatic life use assessment based on the 2011 fish
kill for this segment has been changed from 3b to 3a (not assessed) based on
the age of the data. Class HH - No Data: The previous assessment of full support
has been removed due to the age of the data.