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Powered by Lake Insights Intelligence
Lake Isabella is managed by U.S. Army Corps of Engineers, Sacramento District. Lake Insights displays its latest available elevation from California Data Exchange Center. Published reference elevations are listed below.
39.6 feet below full pool
−39.60 ft vs full pool
Lake Isabella is currently 39.6 feet below full pool and has been falling over the past week. Readings show continued drawdown relative to full pool, with levels trending lower over the past week.
Kern County, CA · surrounding county from lake location
No Drought
No official drought conditions.
Severity
Weekly trend
Stable
Compared with last week
Official drought
No
Current conditions are classified as Abnormally Dry (D0), which is not considered official drought.
U.S. Drought Monitor · map date Aug 4, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Kern County, CA
Managing authority
Waterbody / project type
Official purposes
General factors for reservoirs like this
These are common influences for this type of lake. They do not identify the cause of a specific current change unless an operator update confirms it.
Rainfall & inflows
Rain and upstream river inflows can raise reservoir levels, especially after storms.
Downstream releases
When an operator releases water through a dam, reservoir storage can fall and downstream flows can rise.
Published reference elevation. Not necessarily a fixed year-round target for every project.
A winter / seasonal pool elevation is published, but Lake Insights does not have verified seasonal operating dates for this lake.
Flood stage is not interchangeable with flood pool.
Managing authority: U.S. Army Corps of Engineers, Sacramento District
Observation source used by Lake Insights: California Data Exchange Center
Who manages the lake and who publishes the reading Lake Insights displays can differ. Lake Insights does not invent a source label from the managing authority alone.
Shared background — not lake-specific facts
Lake Insights aggregates water level information from authoritative public sources such as the U.S. Army Corps of Engineers, NOAA, TVA, Bureau of Reclamation, power utilities, and other official lake operators. We preserve historical observations, calculate trends, and present lake conditions in a consistent format. For California Data Exchange Center, we link to the official source whenever it is available. Lake Insights does not predict future lake levels unless an official forecast has been published by the managing authority.
Full pool
Winter pool
Flood stage
Current-level source
Project / NID identifier
Dam / watershed (NID design values)
Static design values from a confidently matched National Inventory of Dams record — not live gage readings.
National Inventory of Dams · matched record: Isabella Dam (CA10106)
Flood-risk operations
Some projects store or release water under flood-risk rules when conditions require it.
Water supply
Some reservoirs support municipal, industrial, irrigation, or regional water-supply needs.
Hydropower
Hydropower projects may pass water through turbines when generating electricity.
Seasonal weather
Dry periods, heat, evaporation, and seasonal rainfall patterns can affect storage over weeks and months.