Forsyth County Lake Quality
Georgia, 3 lakes, measured by Georgia EPD
Forsyth County has 3 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The county's readings sit in the middle of the Georgia range, with one or two lakes pulling the average up or down depending on year.
The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Lake Sidney Lanier.
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Quick Answers for Forsyth County
Planning a trip? Check special fishing regulations for Lake Sidney Lanier — or check the official Georgia fishing regulations.
All Lakes in Forsyth County
3 lakes · 1 ranked on readings, 2 without enough sampling1 lake ranked on readings · 2 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Lake Sidney LanierForsyth | 9.2 ft | 20 µg/L | 7.7 µg/L | No recent samples | ✓ Public |
| Reservoir Number OneForsyth | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Twin LakesForsyth | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: the Georgia Environmental Protection Division. See data sources.