Water level
Lake Tulloch water level
Lake Tulloch is at 507.45 ft as of Sep 9, 2026. Live readings, trend, history and what the level means for swimming and boat ramps.
Recent readings
Daily values from USGS gauge 11299995.
Operating levels set by the Corps of Engineers
Reference elevations published by the SPK district for this project.
| Reference level | Elevation |
|---|---|
| Streambed | 350.0 ft |
| Top of Dam | 515.0 ft |
| Top of Flood | 510.0 ft |
| Top of Gross Pool | 510.0 ft |
| Top of Inactive | 431.0 ft |
What this level means
The level comes from gauge 11299995, TULLOCH RES NR KNIGHTS FERRY CA, and carries the time it was taken. The last value stored here, 507.45 ft, is from 2026-09-09. The Corps of Engineers puts the top of the flood pool at 510.0 ft. The top of the dam sits at 515.0 ft. Water level decides what is usable on the shoreline, from beach width to ramp access.
How this reading is taken
USGS gauge 11299995 measures the water surface and publishes the value continuously. This page stores the latest reading at build time and refreshes the record daily, so the figure above is a real measurement rather than a model or an estimate.
No operating agency publishes a full pool elevation for Lake Tulloch that we can cite, so this page shows the reading and its trend without a percentage.
Elevations are given in feet above the gauge datum used by the operating agency. Two lakes are only comparable with each other through how full they are, not through their raw elevation, because each dam sits at a different height.
Water level questions
What is the current water level at Lake Tulloch?
The latest reading is 507.45 ft, from USGS gauge 11299995.
Sources
Every figure on this page comes from one of these public sources.