Chattooga Lake
Chattooga Lake in Oconee County, South Carolina is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility.
- Clarity
- 10.2 ft
Why Chattooga Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Chattooga Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by SCDES and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Chattooga Lake is a lake in Oconee County, South Carolina.
Source: EPA Water Quality Portal sampling records, SCDES, last sampled 2020-07-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Chattooga Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 10.2 ft. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Chattooga Lake
Compare lakeside cabins, hotels, and vacation rentals near Chattooga Lake in Oconee County, South Carolina — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Chattooga Lake
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Fishing Chattooga Lake
Graded lakes near Chattooga Lake
Chattooga Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Oconee County
Frequently asked questions about Chattooga Lake
What is the water quality grade for Chattooga Lake?
- Chattooga Lake in Oconee County, South Carolina is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility.
Is Chattooga Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Chattooga Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Chattooga Lake across LakeGrade
More South Carolina Lake Rankings
Top 25 by overall water quality score
Top 25 by Secchi water clarity
Grade A/B + low algae filter
Panfish-rich, public access
Full state directory
Mesotrophic Lakes in South Carolina
Where this data comes from
1 measurement from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS1 sample · 2020
Monitoring station identifiers (1)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2020-07-25
Monitoring stations: 1