562.86 ft Reclamation project datum
level 4.1 ft below full pool — this gauge's public record is too short for seasonal comparisons
Reading comes from California DWR — California Data Exchange Center (CDEC station CSI) by way of our own server, which asks the agency each time you load this page and passes on its figure in the agency's own datum, unchanged. Most of these reservoirs report every hour and a few report once a day, so the stamp beside the reading is a time of day for some lakes and a date for others — whichever CDEC put on it. For everything else the agency publishes about this reservoir, go to Lake Casitas at CDEC.
Is Lake Casitas full?
Not quite — 4.1 ft below full pool as of September 22, 2026
How full is Lake Casitas? Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
This year vs the years that matter
This year's trace against last year and the driest and wettest years on record — the drought-context question every lake regular asks.
- 2026 (this year)
- 2025 (last year, wettest on record)
- 2022 (driest on record)
Full pool, datum, and the gauge
"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.
| Full pool | 567.00 ft Reclamation project datum · per Casitas Municipal Water District full-pool reference |
|---|---|
| Conservation capacity | 238,000 acre-feet · per Casitas Municipal Water District capacity reference |
| Gauge | CDEC station CSI · California DWR — California Data Exchange Center |
| Datum | Reclamation project datum |
| Last verified | August 15, 2026 |
LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.
Quick answers
What is the lake level for Lake Casitas today?
Lake Casitas is at 562.86 ft (Reclamation project datum) as of September 22, 2026 — 4.1 ft below full pool — this gauge's public record is too short for seasonal comparisons.
Is Lake Casitas full?
Not quite — at 562.86 ft on September 22, 2026, Lake Casitas is 4.1 ft below its full pool of 567.00 ft (Reclamation project datum).
How full is Lake Casitas?
Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
What is full pool for Lake Casitas?
Full pool (the conservation pool) for Lake Casitas is 567.00 ft Reclamation project datum, per Casitas Municipal Water District full-pool reference. Levels above it use flood storage; levels below it are drawdown.