Imperial Diversion Dam
Dam in Imperial County, Arizona · Colorado River · forms Imperial Reservoir
Height
85 ft
26 m (NID height)
Length
3,475 ft
1,059 m
Completed
1938
Imperial Reservoir today
180.13 ft
7 days ▼ 0.33 ft
Normal storage
74,000 acre-ft
Reservoir level measured Oct 23, 2026, 12:45 PM MST. Full level page →
Facts
- Purposes
- Irrigation
- Dam type
- Buttress
- Structural height
- 85 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 160,000 acre-ft
- Surface area
- 7,000 acres
- Hydraulic height
- 23 ft
- Drainage area
- 5,756 sq mi
- Spillway
- Uncontrolled
- Army Corps district
- Los Angeles District
- Also known as
- Imperial Reservoir
- NID ID
- CA10159
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 22, 2025. Search NID ID CA10159 at nid.sec.usace.army.mil. Project website.