Bull Run Reservoir No 2 water level — Oregon
Bull Run Reservoir No 2 in Oregon was last measured at 858.44 ft (datum NGVD29), as of Aug 31, 2026, 1:00 AM (UTC-07:00) (USGS Water Services). Over its recent trend window the level has been falling (−0.1 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- ↓Falling
−0.1 ft over the trend window
Recent trend
Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Source: USGS site 14139900, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →
About this gauge's record
This site's drainage basin covers approximately 102 sq mi of contributing watershed.
The dam behind Bull Run Reservoir No 2
Bull Run Reservoir No 2 is held back by Development No. 2 Dam (also recorded as Bull Run Reservoir No. 2 (Res)) , a rockfill embankment — quarried rock placed in compacted layers around a sealing core , standing 145 ft high and running 900 ft along its crest , built across Bull Run River in Clackamas County , near Troutdale, OR . It was completed in 1962 , and is owned by City of Portland Oregon (a local government owner) , to a design credited to Stevens & Thompson of Portland, OR.
Its recorded primary purpose is water supply — delivering water to its customers comes first, so drawdown here follows demand as much as it follows rainfall . It also serves water supply;hydroelectric.
It is founded on rock, with a earth core. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. The spillway opening is 0 ft wide.
NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. Its most recent condition assessment was satisfactory — no deficiencies recognised for expected loading. That assessment is dated 04/11/2023.
At its normal pool the reservoir covers about 418 acres. NID records a maximum storage of 25,000 acre-ft against a normal storage of 21,000 acre-ft. Its maximum discharge capacity is 69,000 cubic feet per second.
Dam facts: National Inventory of Dams record OR00317 , filed by Federal Energy Regulatory Commission — U.S. Army Corps of Engineers, public domain. Water levels above come from USGS Water Services and are a separate source. (How this dam was matched to this gauge →)
How Bull Run Reservoir No 2 compares nearby
3 of 6 nearby lakes with a current trend are also falling right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Bull Run Reservoir No 1 | OR | 1,010.92 ft | 6 km |
| Bull Run Lake | OR | 3,163.78 ft | 24 km |
| Lake Merwin | WA | 235.00 ft | 61 km |
| Yale Reservoir | WA | 474.00 ft | 66 km |
| Swift Reservoir 3.2 Mi East of Dam | WA | 966.00 ft | 68 km |
| Big Cliff Lake | OR | 1,200.34 ft | 78 km |
Frequently asked questions
- What is the current water level of Bull Run Reservoir No 2?
- As of Aug 31, 2026, 1:00 AM (UTC-07:00), the pool elevation was 858.44 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Bull Run Reservoir No 2 full right now?
- Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
- Where does this data come from?
- From USGS site 14139900, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in Oregon
See every lake tracked in Oregon, or read the methodology behind these figures.