Tulloch Reservoir Water Level
California · Stanislaus River
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Water level history
About Tulloch Reservoir
Tulloch Reservoir is a reservoir on the Stanislaus River in California, operated by Tri-Dam Project. Its full summer pool sits at 510 ft above sea level. Live water levels come from the U.S. Army Corps of Engineers (CWMS) and update hourly.
Understanding Tulloch Reservoir's water level
"Full pool" is the elevation Tri-Dam Project targets when Tulloch Reservoir is completely filled — 510 feet above sea level. That is the elevation Tulloch Reservoir reaches at the top of a good runoff year, not a level it is held at. Reservoirs like this one fill from winter storms and snowmelt and are then drawn down deliberately through the dry season, so the gap between today's reading and 510 ft is normally the season rather than a shortage. Judge it against the same week last year, not against full.
Tulloch Reservoir climbs through winter and spring as storms and snowmelt come off the mountains, peaks around late spring, and falls steadily through summer and autumn as water goes downstream and flood space is reopened for the next winter. A wet winter can raise it dramatically; the low point almost always lands in autumn regardless.
The recent high and low above are drawn from the published history available for Tulloch Reservoir, so they show how today compares over that record rather than an all-time extreme. The 12-month and 5-year chart views make the trend and the lake's usual seasonal shape easy to see.
Tulloch Reservoir — frequently asked
What is the current water level of Tulloch Reservoir?
The gauge at the top of this page shows Tulloch Reservoir's current elevation in feet above sea level, updated from the U.S. Army Corps of Engineers (CWMS).
What is full pool for Tulloch Reservoir?
Tulloch Reservoir's full summer pool is 510 feet above sea level. Levels are typically drawn down below that in winter for flood storage.
Who manages Tulloch Reservoir?
Tulloch Reservoir is operated by Tri-Dam Project on the Stanislaus River.
Where is Tulloch Reservoir located?
Tulloch Reservoir is in California, on the Stanislaus River.
Why is Tulloch Reservoir low right now?
Reservoir levels fall during dry spells and seasonal drawdown — when Tri-Dam Project lowers the pool for flood storage, power, or water supply — and recover after rain and snowmelt. The history chart above shows the recent trend.
What are the record high and low levels for Tulloch Reservoir?
The recent record high and low elevations are shown in the stats on this page, computed from the available published history for Tulloch Reservoir.
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