Barnett Lake is a productive, nutrient-rich eutrophic lake in White County, Arkansas. Water quality is graded C based on 2 sampling years through 2026.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2026-02-17. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
No clarity data. Phosphorus level: 30 µg/L. Chlorophyll-a: 11.9 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 30 µg/L | C |
| Chlorophyll-a (Algae) | 11.9 µg/L | C |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Barnett Lake
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Fishing Barnett Lake
Location
County Ranking
Ranked #1 of 1 lakes in White County
Cleaner Lakes Within 30 Miles
Barnett Lake holds Grade C. 2 nearby lakes hold higher grades.
- AGreers Ferry LakeCleburne County · 28 mi · Two grade letters higher (C → A)
- AGreers Ferry LakeCleburne County · 20.5 mi · Two grade letters higher (C → A)
Nearby Lakes in White County
Explore Barnett Lake across LakeGrade
More Arkansas Lake Rankings
Other Grade C 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: 2026-02-17
Monitoring stations: 1