Thief Valley Dam
Dam in Union County, Oregon · Powder River · forms Thief Valley Reservoir
Height
73 ft
22 m (NID height)
Length
390 ft
119 m
Completed
1932
Thief Valley Reservoir today
3,096.44 ft
7 days 0.00 ft
Reservoir level measured Oct 21, 2026, 12:00 AM PDT. Full level page →
Facts
- Purposes
- Irrigation
- Dam type
- Buttress
- Structural height
- 73 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 13,307 acre-ft
- Surface area
- 807 acres
- Hydraulic height
- 48 ft
- Drainage area
- 914 sq mi
- Spillway
- Uncontrolled
- Army Corps district
- Portland District
- Also known as
- Thief Valley Reservoir
- NID ID
- OR00592
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 22, 2025. Search NID ID OR00592 at nid.sec.usace.army.mil. Project website.