Lake Rabun is a mesotrophic lake in Rabun County, Georgia. Water quality is graded B based on 1 sampling years through 2025. Compared to the 2 other monitored lakes in Rabun County, Lake Rabun ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Georgia DNR, last sampled 2025-08-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 10.8 ft. Chlorophyll-a: 3.7 µg/L. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.8 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 3.7 µg/L | B |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lake Rabun
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Fishing Lake Rabun
Location
County Ranking
Ranked #2 of 3 lakes in Rabun County
Nearby Lakes in Rabun County
Explore Lake Rabun across LakeGrade
More Georgia Lake Rankings
Other Grade B Lakes in Georgia
Hall County · Good
Union County · Clarity: 8.9 ft
Hart County · Clarity: 13.5 ft
Hall County · Clarity: 12.8 ft
Fannin County · Clarity: 9.4 ft
Gwinnett County · Clarity: 13.3 ft
Mesotrophic Lakes in Georgia
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: 2025-08-20
Monitoring stations: 2