Alisal Reservoir water level
▲ 1.9 points from 91.9% a year ago
Source: waterdata.usgs.gov/monitoring-location/USGS-11128300, accessed October 1, 2026. Updated every 6 hours.
Alisal Reservoir is at 93.9% of full pool (597.99 ft) as of September 29, 2026. Alisal Reservoir was last full on September 11, 2026 (95% of normal storage). Alisal Reservoir is near Solvang, California.
Alisal Reservoir level history
This site counts a reservoir as full on a day its storage is at or above 95% of the dam's normal storage (National Inventory of Dams). Many reservoirs rarely reach 100%, even in wet years, because operators release water for irrigation, power or flood control before they fill, so this site treats 95% as full. Highs and lows are daily readings in the published data, not official records. Source: USGS daily data.
Storage, % of full pool, since 1985
Alisal Reservoir is falling: 93.9% full, down 0.3 percentage points since September 27, 2026.
On this same date last year (September 28, 2025), Alisal Reservoir was 91.9% full, 2 percentage points lower than today's 93.9%.
Weekly averages of the source's daily readings; older years may be monthly or sparser where that is all the source published. Download the charted data (JSON).
Alisal Reservoir map
Alisal Reservoir is at 34.5489, -120.1301. Open in OpenStreetMap.
The dam
- Irrigation
- Recreation
- Water supply
Sources: nid.sec.usace.army.mil, accessed September 29, 2026
Visiting Alisal Reservoir
Good to know:
- NID lists the dam operator as private. No public recreation-area website with confirmed visitor fees or hours was verified this pass; leave logistics empty rather than invent access rules.
Sources (1) ▾
On the water
No campgrounds, boat ramps, or swim spots linked to Alisal Reservoir yet.
Common questions
- Alisal Reservoir is at 93.9% of full pool (597.99 ft) as of September 29, 2026.
- Alisal Reservoir was last full on September 11, 2026, when it held 95% of its normal storage (elevation 598.27 ft). This site counts a reservoir as full on a day its storage is at or above 95% of the dam's normal storage (National Inventory of Dams). Many reservoirs rarely reach 100%, even in wet years, because operators release water for irrigation, power or flood control before they fill, so this site treats 95% as full. Based on USGS daily data since October 1, 1985.
- In USGS daily data since October 1, 1985, Alisal Reservoir's highest storage was 118.7% of normal storage on March 4, 2001. Its lowest after it first filled (February 13, 1986) was 37.4% of normal storage on November 17, 2016. These are the highest and lowest daily readings in the published data, not official records.
- Alisal Reservoir is near Solvang, California (34.5489, -120.1301).
- Private operates the dam at Alisal Reservoir.
- Alisal Reservoir's dam is used for Irrigation, Recreation, Water supply.