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LakeLevelToday

Isabella Lake Water Level Today

Isabella Lake is at 2,555.1 ft as of 9:00 p.m. PT, Oct 23, according to the U.S. Army Corps of Engineers.

2,555.1 ft
Elevation above sea level
11.5 ft
Below full pool of 2,566.5 ft today
Today, 2,555.1 ftFull pool, 2,566.5 ftNormal, 2,548.2 ft
2,5402,5502,5602,5702,580
Last 24 hours
not reported
Last 7 days
−0.28 ft
Last 30 days
−2.68 ft
Compared with normal
6.8 ft above

Updated 9:00 p.m. PT, Oct 23. Source: U.S. Army Corps of Engineers. Normal is the median level for Oct 23 from 2006 to 2026. Elevations are in feet above NGVD29.

Isabella Lake level history

Time range
2,5552,5602,5652,570Sep 23Sep 30Oct 7Oct 14Oct 21
Last 30 daysFull pool
2,5402,5602,5802,600NovFebMayAug
This yearSame dates last yearFull pool
2,5002,5502,6002,650201920222025
One reading a weekFull pool

Elevation in feet, one reading per day (one a week over 10 years). Source: U.S. Army Corps of Engineers.

Common questions

Is Isabella Lake full?

No. It is 11.5 ft below its full pool elevation of 2,566.5 ft.

What is the lowest Isabella Lake has been since 1991?

2,522.4 ft, in October 2015, in daily records back to January 1991.

What is the highest Isabella Lake has been since 1991?

2,605.0 ft, in July 1998, in daily records back to January 1991.

How does today compare with a normal year?

It is 6.8 ft above the median level for Oct 23 across the stored record.

Is Isabella Lake rising or falling?

Falling: it is down 0.28 ft over the last 7 days.

Other California reservoirs

Cachuma Lake742.4 ftFolsom Lake39.7% fullLake Berryessa428.1 ftLake Casitas562.2 ftLake McClure774.6 ftLake Nacimiento741.9 ft
All California lakes

All California reservoirs

LakeLevelToday is not an official warning source. For flood watches and warnings near Isabella Lake, check the National Weather Service.