Chaumiere Lake is a highly nutrient-loaded hypereutrophic lake in Clay County, Missouri. Water quality is graded F based on 3 sampling years through 2021. Overall water quality is improving over recent sampling years. Compared to the 8 other monitored lakes in Clay County, Chaumiere Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2021-08-30. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.4 ft of visibility. Phosphorus level: 130 µg/L. Chlorophyll-a: 86 µg/L. Trophic State Index: 74.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 ft | F |
| Phosphorus | 130 µg/L | F |
| Chlorophyll-a (Algae) | 86 µg/L | F |
| Trophic State Index (TSI) | 74 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Chaumiere Lake
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Fishing Chaumiere Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.08 m/yr | 2 |
| Phosphorus | ↓ Declining | +34.95 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -1.54 µg/L/yr | 4 |
Location
County Ranking
Ranked #7 of 9 lakes in Clay County
Cleaner Lakes Within 30 Miles
Chaumiere Lake holds Grade F. 2 nearby lakes hold higher grades.
- CWaukomis LakePlatte County · 6.4 mi · Two grade letters higher (F → C)
- CBlue Valley LakeJackson County · 6.5 mi · Two grade letters higher (F → C)
Nearby Lakes in Clay County
Explore Chaumiere Lake across LakeGrade
Species activity outlook by water temperature and season
Where to stay at Missouri's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
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More records, surveys & data sources
EPA Impairment Status
Chaumiere 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_7634.00 · Official waterbody report
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of Chaumiere Lake under Clean Water Act (NPDES) discharge permits.
- Smiths Interconnect Americas IncKansas City · 1 mi away · NPDES MONX00990
- Norfolk Southern Railway CompanyNorth Kansas City · 2 mi away · NPDES MO0004910
- Progress RailIndependence · 2.4 mi away · NPDES MONX00433
- Progress Rail WeldingKansas City · 2.4 mi away · NPDES MONX00066
- Inhance Technologies LlcKansas City · 2.8 mi away · NPDES MONX00635
- Martin LubricantsNorth Kansas City · 3 mi away · NPDES MO0126268
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-08-30
Monitoring stations: 1