Tri County Lake is a productive, nutrient-rich eutrophic lake in Calhoun County, Arkansas. Water quality is graded D based on 2 sampling years through 2026. Compared to the 1 other monitored lakes in Calhoun County, Tri County Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2026-02-10. Grade methodology: LakeGrade methodology.
Watch Tri County Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
No clarity data. Phosphorus level: 80 µg/L. Chlorophyll-a: 32.3 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 80 µg/L | D |
| Chlorophyll-a (Algae) | 32.3 µg/L | F |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Tri County Lake
Compare lakeside cabins, hotels, and vacation rentals near Tri County Lake in Calhoun County, Arkansas — 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 Tri County 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 Tri County Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Tri County Lake — straight to your inbox. No spam, unsubscribe anytime.
Fishing Tri County Lake
Location
County Ranking
Ranked #1 of 2 lakes in Calhoun County
Nearby Lakes in Calhoun County
Explore Tri County Lake across LakeGrade
More Arkansas Lake Rankings
Other Grade D Lakes in Arkansas
Eutrophic Lakes in Arkansas
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2026-02-10
Monitoring stations: 1