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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 57% full as of Aug 5, 2026, per CDEC data; 75.2 ft below full pool.

57 % full
below normal 75.2 ft below full pool
CDEC 1,154,054 acre-ft · updated Aug 5, 2026
57%
percent full
467.8
water level (ft msl)
75.2
ft below full pool
−0.14
24-hour change (ft)
543
full pool (ft ref.)
2.04M
capacity (acre-ft)
Can I launch? Yes, most ramps usable.
Lake is lower than normal; some ramps may be out of the water. Check ramp status before launching.
~30-day trend · reservoir elevation
469.5 467.8 now 466.2

How the level compares lately

Over the roughly 30-day series the gage fell 1.7 ft; the last 24 hours moved it down 0.1 ft. For readers outside the U.S., the surface is about 142.6 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

Full pool
543 ft
Capacity
2,041,000 AF
Dam / operator
USBR / CA DWR (San Luis Dam)
River / basin
Offstream (California Aqueduct)
State
California
Data feed
CDEC

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.

Questions about San Luis Reservoir

How full is San Luis Reservoir right now?
San Luis Reservoir is about 57% full as of Aug 5, 2026.
Can I launch a boat at San Luis Reservoir?
Lake is lower than normal; some ramps may be out of the water. Check ramp status before launching. Individual ramps open and close on their own schedules and on local hazards.
Where does San Luis Reservoir's level come from?
LakeLevelNow pulls it from the CDEC public water-data feed (California Data Exchange). The reading is timestamped in the gauge above.
Who operates San Luis Reservoir?
San Luis Reservoir, on the Offstream (California Aqueduct), is operated by USBR / CA DWR (San Luis Dam). Reservoir releases, flood-control drawdowns, and water-supply decisions are theirs.

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