San Luis Reservoir water level
Offstream (California Aqueduct) · California · operated by USBR / CA DWR (San Luis Dam)
By Mike, independent developer behind zovo.one. Readings pulled live from the same CDEC feed the operator reports to.
San Luis Reservoir is 69% full as of Sep 20, 2026, per CDEC data; 51.4 ft below full pool.
At 491.61 ft, San Luis Reservoir is higher than 87% of Septembers in 39 years of daily record. Full San Luis Reservoir almanac, $19 → what is in it
Is that normal for the date?
At 491.61 ft, San Luis Reservoir is higher than 87% of Septembers in 39 years of daily record.
The median for this date across 39 years is 419.27 ft, so this is +72.34 ft against the lake’s own history. Placed on a quantile ladder built from 13,551 daily readings published by CDEC for site SNL, 1988-01-04 to 2026-08-06. This reservoir typically peaks in April and bottoms out in August.
How the level compares lately
Over the roughly 30-day series the gage rose 17.1 ft; the last 24 hours moved it up 0.4 ft. For readers outside the U.S., the surface is about 149.8 m above sea level.
Check any elevation yourself. Type a level in feet above sea level (a ramp cutoff, a marina mark) to see how far it sits below full pool and in meters.
About San Luis Reservoir
Going to San Luis Reservoir?
Recreation-booking links (charters, boat rentals) appear here once partner accounts are wired. See the disclosure page.
Where these numbers come from
Every figure on this page is recomputed in code from a public government feed, never typed by hand. The live elevation is a CDEC gage reading; feet below full pool, the operating-band gaps, the ~30-day change, and the meter conversion are all derived from that one validated reading and the published reference elevations. The reading is timestamped in the gauge above, and LakeLevelNow pulls the same feed the operator reports to.