338.17 ft Georgia Power plant datum
level 1.8 ft below full pool — this gauge's public record is too short for seasonal comparisons
Reading comes straight from NOAA National Water Prediction Service (NOAA gauge SNCG1) and updates live when you load this page.
Is Lake Sinclair full?
Not quite — 1.8 ft below full pool as of September 24, 2026
How full is Lake Sinclair? Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
Full pool, datum, and the gauge
"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.
| Full pool | 340.00 ft Georgia Power plant datum · per Georgia Power full-pool reference |
|---|---|
| Gauge | NOAA gauge SNCG1 · NOAA National Water Prediction Service |
| Datum | Georgia Power plant datum — NWPS gauge SNCG1 'Oconee River at Lake Sinclair', Pool ft. Full pool 340 taken from NWS gauge action stage (matches Georgia Power's stated maximum for Sinclair). |
| Last verified | August 15, 2026 |
LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.
Quick answers
What is the lake level for Lake Sinclair today?
Lake Sinclair is at 338.17 ft (Georgia Power plant datum) as of September 24, 2026 — 1.8 ft below full pool — this gauge's public record is too short for seasonal comparisons.
Is Lake Sinclair full?
Not quite — at 338.17 ft on September 24, 2026, Lake Sinclair is 1.8 ft below its full pool of 340.00 ft (Georgia Power plant datum).
How full is Lake Sinclair?
Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
What is full pool for Lake Sinclair?
Full pool (the conservation pool) for Lake Sinclair is 340.00 ft Georgia Power plant datum, per Georgia Power full-pool reference. Levels above it use flood storage; levels below it are drawdown.