Dam Lake is a mesotrophic lake in Pulaski County, Virginia. Water quality is graded B based on 2 sampling years through 2026. Compared to the 9 other monitored lakes in Pulaski County, Dam Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Virginia DNR, last sampled 2026-07-07. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 8.5 ft. Phosphorus level: 20 µg/L. Chlorophyll-a: 6.6 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.5 ft | B |
| Phosphorus | 20 µg/L | B |
| Chlorophyll-a (Algae) | 6.6 µg/L | B |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Dam Lake
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Fishing Dam Lake
Location
County Ranking
Ranked #3 of 10 lakes in Pulaski County
Cleaner Lakes Within 30 Miles
Dam Lake holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Pulaski County
Explore Dam Lake across LakeGrade
More Virginia Lake Rankings
Other Grade B Lakes in Virginia
Mesotrophic Lakes in Virginia
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: 2026-07-07
Monitoring stations: 2