Crawford County, Missouri · Water Quality Report Card
Indian Hills Lake
Indian Hills Lake in Crawford County, Missouri has a water quality grade of D (Poor). Water clarity: 3.4 ft visibility. Phosphorus: 35 µg/L. Chlorophyll-a (algae): 28.4 µg/L.
- Clarity
- 3.4 ft
- Mean depth
- ~34 ft est.
- Type
- Eutrophic
Indian Hills Lake is a productive, nutrient-rich eutrophic lake in Crawford County, Missouri with an estimated average depth of about 34 feet. Water quality is graded D based on 2 sampling years through 2020.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2020-09-02. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D (Poor)
Murky, only visible to about 3.4 ft. Phosphorus level: 35 µg/L. Chlorophyll-a: 28.4 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | |
| Phosphorus | 35 µg/L | Poor |
| Chlorophyll-a (Algae) | 28.4 µg/L | Poor |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~34 ft est. |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Missouri has not published bathymetry for Indian Hills Lake.
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Fishing Indian Hills Lake
Location
County Ranking
Ranked #1 of 1 lakes in Crawford County
Cleaner Lakes Within 30 Miles
Indian Hills Lake holds Grade D. 4 nearby lakes hold higher grades.
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More records, surveys & data sources
EPA Impairment Status
Indian Hills Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7288.00 · Official waterbody report · Matched by proximity (1.52 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Where this data comes from
23 measurements from 2 monitoring stations, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC20 samples · 2020 - Missouri Dept. of Natural Resources
MDNR3 samples · 2020
Analytical methods
- Depth, Secchi disk in meters
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Nitrogen and Phosphorus, Total, Whole-water, Alkaline Persulfate Digest
Monitoring station identifiers (2)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2020-09-02
Monitoring stations: 2