Possum Kingdom Lake is a productive, nutrient-rich eutrophic lake in Stephens County, Texas. Water quality is graded C based on 2 sampling years through 2025. Compared to the 2 other monitored lakes in Stephens County, Possum Kingdom Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2025-11-18. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.9 ft. Phosphorus level: 30 µg/L. Chlorophyll-a: 14.5 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.9 ft | D |
| Phosphorus | 30 µg/L | C |
| Chlorophyll-a (Algae) | 14.5 µg/L | C |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Possum Kingdom Lake
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Fishing Possum Kingdom Lake
Location
County Ranking
Ranked #2 of 3 lakes in Stephens County
Nearby Lakes in Stephens County
Explore Possum Kingdom Lake across LakeGrade
More Texas Lake Rankings
Other Grade C Lakes in Texas
Eutrophic Lakes in Texas
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: 2025-11-18
Monitoring stations: 4