Lakefullness

Lake Isabella water level: Isabella Lake Isabella 5.5 ft low

Lake Isabella is 5.5 ft below full pool, about normal for early November. The Isabella Lake gauge read 2,554.93 ft at 6:00 AM PST, November 4, 2026.

Check your dock

Source: U.S. Army Corps of Engineers, SPK district. Agency page.

How Isabella stands today

2530 2535 2540 2545 2550 2555 2560 2565 2570 2575 A year ago 2,562.69 ft Full pool 2,560.42 ft Today 2,554.93 ft Normal today 2,551.73 ft Feet above sea level (NGVD29)
Wfm lake isabella landsat
Wfm lake isabella landsat. Photograph by Unknown, Public domain.

The past year, day by day

The shaded band is where Isabella usually sits on each date: the middle 80% of years from 1996 to 2025. The blue line is the past 12 months; the sand line is the 12 months before. Hover or use the arrow keys to read any day.

  • Past 12 months
  • The 12 months before
  • Normal range (middle 80% of years)
  • Median
  • Full pool
2,540 2,560 2,580 2,600 DecJanFebMarAprMayJunJulAugSepOctNov Full pool 2,560.42 Today Year ago
2,540 2,560 2,580 2,600 DecFebAprJunAugOct Full pool 2,560.42 Today Year ago

Monthly average since 2006

2,5252,5502,5752,6002006200920122015201820212024
2,5252,5502,5752,60020062011201620212026
Readings for the last 30 days
DateLevel (ft)Normal (ft)
November 4, 20262,554.912,551.73
November 3, 20262,554.932,551.73
November 2, 20262,554.952,551.73
November 1, 20262,554.912,551.74
October 31, 20262,554.902,551.75
October 30, 20262,554.902,551.77
October 29, 20262,554.922,551.81
October 28, 20262,554.942,551.85
October 27, 20262,554.952,551.91
October 26, 20262,554.982,551.97
October 25, 20262,555.022,552.04
October 24, 20262,555.042,552.10
October 23, 20262,555.042,552.17
October 22, 20262,555.062,552.24
October 21, 20262,555.062,552.30
DateLevel (ft)Normal (ft)
October 20, 20262,555.112,552.37
October 19, 20262,555.152,552.43
October 18, 20262,555.222,552.49
October 17, 20262,555.312,552.55
October 16, 20262,555.392,552.60
October 15, 20262,555.482,552.65
October 14, 20262,555.592,552.71
October 13, 20262,555.712,552.77
October 12, 20262,555.782,552.84
October 11, 20262,555.832,552.91
October 10, 20262,555.902,553.00
October 9, 20262,555.982,553.08
October 8, 20262,556.102,553.18
October 7, 20262,556.242,553.27
October 6, 20262,556.372,553.36

Is the water above your dock?

Enter the elevation of your dock, ramp end or a mark on your shoreline, in feet above sea level (NGVD29, the datum the Army Corps of Engineers uses for this gauge). You will see how far the water is above or below it today, and how often it dipped below it in each month since 2016.

Today the lake is at 2,554.93 ft.

Typical Lake Isabella level by month since 2016
MonthLow year (10th %)MedianHigh year (90th %)Days above your mark
January 2,532.68 2,557.82 2,566.00 —
February 2,535.42 2,559.76 2,568.97 —
March 2,536.49 2,562.92 2,577.87 —
April 2,538.78 2,570.38 2,582.26 —
May 2,544.27 2,578.37 2,586.49 —
June 2,541.35 2,580.45 2,590.61 —
July 2,537.19 2,574.91 2,585.67 —
August 2,533.76 2,564.60 2,578.68 —
September 2,532.42 2,558.70 2,571.23 —
October 2,531.87 2,555.39 2,567.78 —
November 2,531.59 2,554.92 2,563.16 —
December 2,531.46 2,551.85 2,564.30 —

Other California lakes, lowest first

Lake Isabella
Lake Isabella
California lakes ranked by how full they are
Lake Level (ft) Vs full pool For the date
Eastman Lake 466.12 101.5 ft below Lower than usual
Hensley Lake 453.81 52.0 ft below Lower than usual
Pine Flat Lake 753.31 169.9 ft below About normal
Black Butte Lake 435.72 17.6 ft below About normal
Lake Mendocino 724.22 13.3 ft below About normal
Folsom Lake 398.42 47.0% full About normal
Shasta Lake 972.06 69.3 ft below About normal
Stampede Reservoir 5,919.95 22.2 ft below About normal
Lake McClure 772.24 37.4 ft below About normal
Millerton Lake 503.57 56.2 ft below About normal
Prosser Creek Reservoir 5,706.20 2.6 ft above About normal
Lake Oroville 734.67 140.2 ft below About normal
New Melones Lake 1,003.77 45.8 ft below About normal
Lake Berryessa 427.42 12.6 ft below About normal

All 25 California lakes →

Isabella questions

What is full pool at Lake Isabella?

Full pool at Lake Isabella is 2,560.42 ft above sea level today. The agency's own term for it is “top of conservation.”

Is Lake Isabella full right now?

No. It is 5.5 ft below full pool.

Is Lake Isabella lower than normal for early November?

No, it is close to normal. The median level on Nov 4 across 1996–2025 is 2,551.73 ft, and today's 2,554.93 ft is +3.20 ft from it. In 8 of 10 years the level on this date fell between 2,531.66 and 2,573.01 ft.

How does Lake Isabella compare with last year?

A year ago, on November 4, 2025, it stood at 2,562.69 ft. It is 7.76 ft lower now.

What are the highest and lowest levels since 1995?

In the daily record we hold, which starts in 1995, the highest daily level was 2,605.01 ft on July 25, 1998 and the lowest was 2,522.36 ft on October 3, 2015.

How often is this page updated?

We pull new readings from the U.S. Army Corps of Engineers several times a day. This page was last rebuilt on Wed, 04 Nov 2026 15:13:17 UTC. Readings are provisional and can be revised by the agency.