San Antonio Dam
Dam in San Bernardino County, California · San Antonio Creek · forms San Antonio Reservoir
Height
160 ft
49 m (NID height)
Length
3,850 ft
1,173 m
Completed
1956
San Antonio Reservoir today
2,125.00 ft
7 days –
Reservoir level measured Oct 19, 2026, 6:00 AM PDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction
- Dam type
- Earth
- Owner
- USACE - Los Angeles District (Federal)
- Maximum storage
- 11,880 acre-ft
- Surface area
- 1 acres
- Hydraulic height
- 130 ft
- Drainage area
- 27 sq mi
- Spillway
- Uncontrolled, 200 ft wide
- Army Corps district
- Los Angeles District
- Also known as
- San Antonio Reservoir
- NID ID
- CA10023
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 2, 2026. Search NID ID CA10023 at nid.sec.usace.army.mil. Project website.