Home› Lakes› California

San Luis Reservoir water level

Offstream (California Aqueduct) · California · operated by USBR / CA DWR (San Luis Dam)

By Michael, independent developer behind zovo.one. Readings pulled live from the same CDEC feed the operator reports to.

San Luis Reservoir is 73% full as of Oct 9, 2026, per CDEC data; 44.5 ft below full pool.

healthy 44.5 ft below full pool

CDEC 1,490,163 acre-ft · updated Oct 9, 2026

73%

percent full

498.5

water level (ft msl)

44.5

ft below full pool

−0.04

24-hour change (ft)

543

full pool (ft ref.)

2.04M

capacity (acre-ft)

At 498.47 ft, San Luis Reservoir is higher than 88% of Octobers in 39 years of daily record. Full San Luis Reservoir almanac, $19 → what is in it

Can I launch? Yes, most ramps usable.

Lake is well within its normal pool; most boat ramps are usable. Confirm your specific ramp, which can close independently of lake level.

~30-day trend · reservoir elevation

498.5 498.5 now 487.0

Is that normal for the date?

At 498.47 ft, San Luis Reservoir is higher than 88% of Octobers in 39 years of daily record.

The full San Luis Reservoir almanac, $1939 years of daily record, the normal band for all 366 days, and a tool that tells you how often the lake has been below your ramp or dock elevation. Instant download. See a sample almanac (Lake Powell)or all 19 lakes for $79Checkout runs on Stripe under our parent company, BeLikeNative (Autom8 LLC). That name appears on the receipt and card statement.

The median for this date across 39 years is 424.89 ft, so this is +73.58 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 11.4 ft; the last 24 hours moved it down 0.0 ft. For readers outside the U.S., the surface is about 151.9 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.

Elevation, ft above sea level

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

Run a marina, guide service or boat rental at San Luis Reservoir? Sponsor this page: one local business per lake, $49 a month, cancel any time. How it works or email support@zovo.one.

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 73% full as of Oct 9, 2026.

Can I launch a boat at San Luis Reservoir?

Lake is well within its normal pool; most boat ramps are usable. Confirm your specific ramp, which can close independently of lake level. 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.

LakeLevelNow is free, ad-light and built by one person. If it saved you a wasted drive to a dry ramp, you can chip in. Michael

Chip in $5

More lakes in California

San Luis Reservoir water level

Is that normal for the date?

How the level compares lately

About San Luis Reservoir

Where these numbers come from

Questions about San Luis Reservoir

More lakes in California

Related calculators