OR00593 - Unity Dam


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Unity Dam


	Statistics

General

Region (Map) : ...................Pacific Northwest

State (Map) ........................ Oregon

County ................................ Baker

Project: ................................ Burnt River

Dam type: ........................... Earthfill

Location: ............................ 8 mi from Hereford

Watercourse: ..................... Burnt River

Reservoir: ........................... Unity

Construction Date: ........... 1936-1938

National ID Number ......... OR00593

Hydrologic Unit Code ....

Dimensions

Crest Elevation of Dam: ...................... 3827.3 ft

Structural Height of Dam: ................... 82.0 ft

Crest Length: ........................................ 690.0 ft

Top of Joint Use: ................................. 3820.0 ft

Top of Active Conservation: ................... x.0 ft

Top of Inactive Conservation: ................. x.0 ft

Spillway Crest: ............................................ x.0 ft

Top of Dead Storage: ................................ x.0 ft

Streambed at Dam Axis : ........................... x.0 ft

Hydraulics

Normal Water Surface Elev: ...................3820 ft

Hydraulic Height: .................................... 62.0 ft

Service Spillway Type:

Uncontrolled Crest ................................ No

Morning-Glory ........................................... No

Crest Length ....................................... 48.0 ft

Gated ...................................................... Yes

Capacity at Elev: 3820.0 ft, 10,000 cfs

Auxiliary Spillway ......................................... No

Capacity at Elev. .................................. 0 cfs

Outlet Works Capacity at

Elevation 3820.0 ft., ....................... 620 cfs

Hydrology

Drainage Area: .................................308.0 sq mi

Hydrometeorological Report HMR xx

Flood Type: ............................................General

Storm Duration: ............................................ hrs

Probable Maximum Flood (PMF) Report:

Peak Inflow: ................................................ cfs

Inflow Volume: ..................................... acre-ft

Flow Duration: .......................................0 days

PMF Routing MWS Elev.: ...................... x.0 ft

Initial Routing Elev: ................................. x.0 ft

Study Date:

Power Generation

Power Generation at Dam Site - None

Bureau of Reclamation Power Program

Narration

Geology

The reservoir basin is a portion of a large depression lying between the Elkhorn Range on the north, the Blue Mountains to the west and the Ironsides Mountains on the south. Uplift of the surrounding ranges resulted in the deformation of existing formations, chiefly lava, and was accompanied by faulting on a moderate scale.

Links

| Recreation | Unity Reservoir - Boat Ramp Elevations |

| Dams Located by State | USBR Oregon Dams | Pacific Northwest Region Dams |

| Owner: Bureau of Reclamation, Snake River Area Office - West,
230 Collins Road, Boise, ID 83703, (208) 383-2000

| Operator: Burnt River Irrigation District,
19498 Highway 245, Hereford, OR 97837, (541) 446-3313