Lake Levels DailyLake Levels Daily

Lake Isabella Water Level Today

Also known as Isabella Lake · Isabella Reservoir

Daily level, distance to full pool and history for Lake Isabella, on the Kern River in California.

Updated · Source: CDEC station ISB Provisional

Water level Provisional

2,554.89ft

msl · 9:00 PM PST, Nov 8, 2026

  • 50.61 ftbelow full pool (2,605.5 ft)
  • −0.01 ftin 24 h−0.03 ft in 7 days−1.09 ft in 30 days
2,5502,5602,5702,5802,5902,6002,6102,6202,5502,5602,5702,5802,5902,6002,6102,6202,5502,5602,5702,5802,5902,6002,6102,620
  • Full pool
  • 1 yr ago

Is Lake Isabella full?

No. Lake Isabella is 50.61 ft below full pool (2,605.5 ft). It is 7.01 ft lower than a year ago (2,561.90 ft on Nov 8, 2025).

Lake Isabella level history

View data table
DateLevel (ft)
Nov 8, 20262,554.89
Nov 7, 20262,554.91
Nov 6, 20262,554.91
Nov 5, 20262,554.92
Nov 4, 20262,554.92
Nov 3, 20262,554.93
Nov 2, 20262,554.95
Nov 1, 20262,554.91
Oct 31, 20262,554.90
Oct 30, 20262,554.90
Oct 29, 20262,554.92
Oct 28, 20262,554.94
Oct 27, 20262,554.95
Oct 26, 20262,554.98
Oct 25, 20262,555.02
Oct 24, 20262,555.04
Oct 23, 20262,555.04
Oct 22, 20262,555.06
Oct 21, 20262,555.06
Oct 20, 20262,555.11
Oct 19, 20262,555.15
Oct 18, 20262,555.22
Oct 17, 20262,555.30
Oct 16, 20262,555.39
Oct 15, 20262,555.48
Oct 14, 20262,555.59
Oct 13, 20262,555.71
Oct 12, 20262,555.78
Oct 11, 20262,555.83
Oct 10, 20262,555.90
Oct 9, 20262,555.98
  • Lake Isabella level
  • Full pool 2,605.5 ft
  • Above full pool
Source: CDEC · Daily averages since 1990

Lake Isabella on Nov 8 in past years

Lake Isabella water level on Nov 8 in past years
YearLevel (ft)vs todayvs full pool
2026today2,554.89—−50.61 ft
20252,561.90+7.01−43.60 ft
20242,556.89+2.00−48.61 ft
20232,569.61+14.72−35.89 ft
20222,526.23−28.66−79.27 ft
20212,531.76−23.13−73.74 ft
20202,546.11−8.78−59.39 ft
20192,560.10+5.21−45.40 ft
20182,537.66−17.23−67.84 ft
20172,559.76+4.87−45.74 ft
20162,544.03−10.86−61.47 ft

Today’s level is the lowest for this date since 2022.

Lake facts

Full pool (conservation pool)
2,605.5 ft msl
Highest since 1990
2,605.01 ftJul 24, 1998
Lowest since 1990
2,522.36 ftOct 2, 2015
Data since
Jan 1, 1990
Dam
Isabella Damcompleted 1953
River
Kern River
Owned by
US Army Corps of Engineers, Sacramento District
Dam location
Kern County
Gauge location
35.6460, −118.4730

Dam, river and owner from the National Inventory of Dams (USACE). Records cover Jan 1, 1990 to today (daily averages).

Weather on the lake

  1. Tonight51°FLowSE 0–5 mphMostly Clear
  2. Monday79°FHighLow 49°FNNW 0–10 mphMostly Sunny
  3. Tuesday80°FHighLow 51°FESE 0–5 mphSunny
  4. Wednesday82°FHighLow 51°FESE 5–10 mphSunny
  5. Thursday77°FHighLow 49°FE 10 mphSunny
  6. Friday72°FHighLow 50°FE 5–15 mphMostly Sunny
  7. Saturday71°FHighLow 48°FESE 0–10 mphMostly Sunny

Forecast: National Weather Service for the dam area (35.65, −118.47). Wind speeds are forecasts, not measurements.

Nearby lakes

Quick answers

What is the full pool level of Lake Isabella?
2,605.5 ft above mean sea level, the top of its conservation pool. Above it, water is released or flows over the spillway of Isabella Dam.
How much does Lake Isabella need to be full?
Lake Isabella needs 50.61 ft more water to reach full pool (2,605.5 ft), as of Nov 8, 2026.
Is Lake Isabella rising or falling?
It is steady: −0.03 ft in the last 7 days and −0.01 ft in 24 hours, to 2,554.89 ft on 9:00 PM PST, Nov 8, 2026 (California Data Exchange Center).
What is the highest level in our data?
Lake Isabella reached 2,605.01 ft on Jul 24, 1998. The lowest was 2,522.36 ft on Oct 2, 2015 (CDEC data since 1990; older records are not in this data set).
How much has Lake Isabella changed in the last year?
In the last 12 months it ranged from 2,554.89 ft (Nov 8, 2026) to 2,586.82 ft (May 17, 2026), a swing of 31.93 ft.
How often is this page updated?
This page is updated several times a day with the latest reading from California Data Exchange Center. The last reading is from 9:00 PM PST, Nov 8, 2026.

Where this data comes from

Hourly reservoir elevation from the California Data Exchange Center of the California Department of Water Resources (station ISB, cdec.water.ca.gov). Recent readings are provisional and may be revised. Weather from the National Weather Service. Dam details from the National Inventory of Dams.

Lake Levels Daily is an independent site, not affiliated with TWDB, LCRA, USACE, USGS, NOAA, TVA or any lake operator. Check official sources before making safety decisions.