Stone Mountain Lake
Stone Mountain Lake in DeKalb County, Georgia is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 330 acres.
- Area
- 330 acres
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Why Stone Mountain Lake has no grade
We grade a lake only when the monitoring record supports a letter: 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 Stone Mountain Lake, no water-quality sampling on record for this lake.
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 Georgia EPD and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Stone Mountain Lake is a 330-acre lake in DeKalb County, Georgia.
Source: EPA Water Quality Portal sampling records, Georgia EPD, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Stone Mountain Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Stone Mountain Lake
Compare lakeside cabins, hotels, and vacation rentals near Stone Mountain Lake in DeKalb County, Georgia — 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 Stone Mountain Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 330 acres |
No bathymetric survey has been published for Stone Mountain Lake, so its depth is not documented here.
Fishing Stone Mountain Lake
Nearby Lakes in DeKalb County
Frequently asked questions about Stone Mountain Lake
Where is Stone Mountain Lake?
- Stone Mountain Lake is a lake in DeKalb County, Georgia. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Stone Mountain Lake?
- Stone Mountain Lake in DeKalb County, Georgia is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 330 acres.
Is Stone Mountain Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Stone Mountain Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Stone Mountain Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.