Development No. 1 Dam
Dam in Multnomah County, Oregon · Bull Run River · forms Bull Run Reservoir NO 1
Height
200 ft
61 m (NID height)
Length
970 ft
296 m
Completed
1929
Bull Run Reservoir NO 1 today
977.91 ft
7 days ▼ 6.05 ft
Normal storage
26,640 acre-ft
Much below normal for the date
Reservoir level measured Oct 23, 2026, 12:00 PM PDT. Full level page →
Facts
- Purposes
- Water Supply; Hydroelectric
- Dam type
- Concrete
- Structural height
- 200 ft
- Owner
- City of Portland Oregon (Local Government)
- Maximum storage
- 33,760 acre-ft
- Surface area
- 386 acres
- Hydraulic height
- 97 ft
- Drainage area
- 75 sq mi
- Spillway
- Controlled, 120 ft wide
- Army Corps district
- Portland District
- Also known as
- Bear Creek Dam;Bull Run Reservoir No. 1 (Res)
- NID ID
- OR00327
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Aug 26, 2026. Search NID ID OR00327 at nid.sec.usace.army.mil. Project website.