6227.01 ft Lake Tahoe Datum
level 2.1 ft below full pool — this gauge's public record is too short for seasonal comparisons
Reading comes from California DWR — California Data Exchange Center (CDEC station THC) by way of our own server, which asks the agency each time you load this page and passes on its figure in the agency's own datum, unchanged. Most of these reservoirs report every hour and a few report once a day, so the stamp beside the reading is a time of day for some lakes and a date for others — whichever CDEC put on it. For everything else the agency publishes about this reservoir, go to Lake Tahoe at CDEC.
Is Lake Tahoe full?
Not quite — 2.1 ft below full pool as of September 22, 2026
How full is Lake Tahoe? 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.
This year vs the years that matter
This year's trace against the finished years this gauge has published. Its public daily record begins in 2021, so the driest and wettest years are not named yet: that takes 8 finished years, and the lake regulars will remember wetter and drier years than any line here.
- 2026 (this year)
- 2025 (last year)
- 2024
- 2022
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 | 6229.10 ft Lake Tahoe Datum · per USBR / Federal Watermaster (Truckee River Operating Agreement) full-pool reference |
|---|---|
| Gauge | CDEC station THC · California DWR — California Data Exchange Center |
| Datum | Lake Tahoe Datum — Full for Tahoe is a legal limit, 6,229.1 ft under the 1935 Truckee River Agreement; below the natural rim at 6,223.0 ft the lake stops feeding the Truckee at all. |
| 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 Tahoe today?
Lake Tahoe is at 6227.01 ft (Lake Tahoe Datum) as of September 22, 2026 — 2.1 ft below full pool — this gauge's public record is too short for seasonal comparisons.
Is Lake Tahoe full?
Not quite — at 6227.01 ft on September 22, 2026, Lake Tahoe is 2.1 ft below its full pool of 6229.10 ft (Lake Tahoe Datum).
How full is Lake Tahoe?
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 Tahoe?
Full pool (the conservation pool) for Lake Tahoe is 6229.10 ft Lake Tahoe Datum, per USBR / Federal Watermaster (Truckee River Operating Agreement) full-pool reference. Levels above it use flood storage; levels below it are drawdown.