Lake Isabella water level
Kern River · California · operated by USACE (Isabella Dam)
By Mike, independent developer behind zovo.one. Readings pulled live from the same CDEC feed the operator reports to.
Lake Isabella is 27% full as of Sep 20, 2026, per CDEC data; 15.0 ft below full pool.
At 2,557.97 ft, Lake Isabella is higher than 57% of Septembers in 42 years of daily record. Full Lake Isabella almanac, $19 → what is in it
Is that normal for the date?
At 2,557.97 ft, Lake Isabella is higher than 57% of Septembers in 42 years of daily record.
The median for this date across 42 years is 2,550.51 ft, so this is +7.46 ft against the lake’s own history. Placed on a quantile ladder built from 13,286 daily readings published by CDEC for site ISB, 1985-01-01 to 2026-08-06. This reservoir typically peaks in June and bottoms out in January.
How the level compares lately
Over the roughly 30-day series the gage fell 4.9 ft; the last 24 hours moved it down 0.1 ft. For readers outside the U.S., the surface is about 779.7 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 Lake Isabella
Going to Lake Isabella?
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.