Barton County, Missouri · 37.48°N · Water Quality Report Card
Lamar City Lake
Lamar City Lake in Barton County, Missouri has a water quality grade of F (Very Poor). Water clarity: 2 ft visibility. Phosphorus: 66 µg/L. Chlorophyll-a (algae): 39.1 µg/L.
- Clarity
- 2 ft
- Mean depth
- ~8 ft est.
- Type
- Hypereutrophic
Lamar City Lake is a highly nutrient-loaded hypereutrophic lake in Barton County, Missouri with an estimated average depth of about 8 feet. Water quality is graded F based on 2 sampling years through 2020. Compared to the 5 other monitored lakes in Barton County, Lamar City Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2020-11-05. Grade methodology: LakeGrade methodology.
Watch Lamar City Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F (Very Poor)
Very murky, less than 2 ft of visibility. Phosphorus level: 66 µg/L. Chlorophyll-a: 39.1 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | |
| Phosphorus | 66 µg/L | Poor |
| Chlorophyll-a (Algae) | 39.1 µg/L | Poor |
| Trophic State Index (TSI) | 66 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~8 ft est. |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Missouri has not published bathymetry for Lamar City Lake.
Where to stay near Lamar City Lake
Compare lakeside cabins, hotels, and vacation rentals near Lamar City Lake in Barton County, Missouri — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lamar City Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Lamar City Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Lamar City Lake — straight to your inbox. No spam, unsubscribe anytime.
Planning a whole trip? See where to stay at Missouri’s top lakes →
Fishing Lamar City Lake
Location
County Ranking
Ranked #4 of 6 lakes in Barton County
Nearby Lakes in Barton County
Explore Lamar City 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
Missouri's cleanest and most-polluted lakes, ranked
More Missouri Lake Rankings
Other Grade F Lakes in Missouri
Hypereutrophic Lakes in Missouri
More records, surveys & data sources
EPA Impairment Status
Lamar City Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MO_7356.00 · Official waterbody report · Matched by proximity (0.89 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
52 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC52 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
Monitoring station identifiers (1)
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: 2020-11-05
Monitoring stations: 1