Lower White Oak Lake is a productive, nutrient-rich eutrophic lake in Ouachita County, Arkansas. Water quality is graded D based on 1 sampling years through 2025. Compared to the 2 other monitored lakes in Ouachita County, Lower White Oak Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2025-10-28. 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
No clarity data. Chlorophyll-a: 25.9 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 25.9 µg/L | D |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lower White Oak Lake
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Fishing Lower White Oak Lake
Location
County Ranking
Ranked #2 of 3 lakes in Ouachita County
Cleaner Lakes Within 30 Miles
Lower White Oak Lake holds Grade D. One nearby lake has a higher grade.
Nearby Lakes in Ouachita County
Explore Lower White Oak 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: 2025-10-28
Monitoring stations: 1