Dams in Oregon

857 damsAvg age: 67 years

149

High Hazard

169

Significant

539

Low Hazard

Dam Safety in Oregon

Oregon has 857 dams tracked in the National Inventory of Dams. Of these, 149 (17%) are classified as high hazard — meaning failure would probably cause loss of human life — and 169 are classified as significant hazard. Currently, 46 dams in the state have a condition assessment of poor or unsatisfactory, indicating recognized safety deficiencies.

The average dam in Oregon is 67 years old. As dams age, inspection frequency and maintenance become increasingly important for ensuring public safety. The most common purpose for dams in Oregon is irrigation, accounting for 519 of the state's dams.

Use the search above to find dams near any address in Oregon, or browse by county below. Each dam listing includes its hazard potential classification, condition assessment, physical characteristics, and inspection history from the NID.

Oregon Dam Facts

Total Dams	857
High Hazard Dams	149
Average Dam Age	67 years
Tallest Dam	519 ft
Largest Reservoir	2,530,000 acre-ft
Poor/Unsatisfactory Condition	46

Notable Dams in Oregon

Cougar Dam519 ftHigh Detroit Dam463 ftHigh Round Butte440 ftHigh Owyhee Dam417 ftHigh Brownlee395 ftHigh

Explore Oregon Dams

Oldest DamsEarliest dams in Oregon Tallest DamsHighest dams in Oregon

Counties in Oregon

Baker41 dams3 high hazard Benton6 dams2 high hazard Clackamas43 dams7 high hazard Clatsop5 dams4 high hazard Columbia5 dams Coos14 dams4 high hazard Crook37 dams5 high hazard Curry3 dams1 high hazard Deschutes16 dams3 high hazard Douglas46 dams16 high hazard Grant16 dams1 high hazard Harney60 dams Hood River4 dams1 high hazard Jackson52 dams17 high hazard Jefferson16 dams5 high hazard Josephine9 dams2 high hazard Klamath45 dams4 high hazard Klickitat2 dams2 high hazard Lake49 dams3 high hazard Lane26 dams12 high hazard Lincoln5 dams5 high hazard Linn12 dams6 high hazard Malheur71 dams10 high hazard Marion40 dams3 high hazard Morrow7 dams1 high hazard Multnomah20 dams7 high hazard Polk42 dams2 high hazard Sherman6 dams Umatilla11 dams3 high hazard Union24 dams5 high hazard Wallowa5 dams1 high hazard Wasco22 dams9 high hazard Washington40 dams3 high hazard Wheeler17 dams Yamhill40 dams2 high hazard

High Hazard Dams in Oregon

Dam	County	Height	Condition	Purpose
Cougar Dam	Lane	519 ft	Not assessed	Flood Risk Reduction
Detroit Dam	Linn	463 ft	Not assessed	Flood Risk Reduction
Round Butte	Jefferson	440 ft	Fair	Hydroelectric
Owyhee Dam	Malheur	417 ft	Not assessed	Irrigation
Brownlee	Baker	395 ft	Fair	Hydroelectric
Green Peter Dam	Linn	378 ft	Not assessed	Flood Risk Reduction
Hills Creek Dam	Lane	341 ft	Not assessed	Flood Risk Reduction
Lookout Point Dam	Lane	276 ft	Not assessed	Flood Risk Reduction
Blue River Dam	Lane	270 ft	Not assessed	Flood Risk Reduction
Arthur R. Bowman Dam	Crook	245 ft	Not assessed	Flood Risk Reduction
Applegate Dam	Jackson	242 ft	Not assessed	Flood Risk Reduction
Smith	Linn	235 ft	Unsatisfactory	Hydroelectric
John Day Lock and Dam	Klickitat	230 ft	Not assessed	Navigation
North Fork	Clackamas	207 ft	Satisfactory	Hydroelectric
Fall Creek Dam	Lane	205 ft	Not assessed	Flood Risk Reduction
Pelton	Jefferson	204 ft	Satisfactory	Hydroelectric
Development No. 1 Dam	Multnomah	200 ft	Fair	Water Supply
The Dalles Lock and Dam	Klickitat	200 ft	Not assessed	Navigation
Bonneville Locks and Dam	Multnomah	197 ft	Not assessed	Navigation
Spillway Dam	Clackamas	180 ft	Fair	Water Supply
Mason Dam	Baker	173 ft	Not assessed	Flood Risk Reduction
Big Cliff Dam	Marion	172 ft	Not assessed	Hydroelectric
Galesville	Douglas	167 ft	Satisfactory	Irrigation
Mckay Dam	Umatilla	165 ft	Not assessed	Flood Risk Reduction
Barney	Washington	165 ft	Satisfactory	Water Supply
Willow Creek Dam	Morrow	160 ft	Not assessed	Flood Risk Reduction
Dorena Dam	Lane	154 ft	Not assessed	Flood Risk Reduction
Scoggins Dam	Washington	151 ft	Not assessed	Irrigation
Berry Creek	Douglas	148 ft	Satisfactory	Water Supply
Ochoco Dam	Crook	146 ft	Not assessed	Fish and Wildlife Pond
Wolf Creek	Union	128 ft	Satisfactory	Irrigation
Soda Springs	Douglas	127 ft	Fair	Hydroelectric
Foster Dam	Linn	126 ft	Not assessed	Flood Risk Reduction
Bully Creek Dam	Malheur	121 ft	Not assessed	Flood Risk Reduction
Lemolo No 1	Douglas	120 ft	Fair	Hydroelectric
Dexter Dam	Lane	117 ft	Not assessed	Flood Risk Reduction
Crow Creek	Wasco	115 ft	Fair	Water Supply
Cold Springs Dam	Umatilla	115 ft	Not assessed	Irrigation
Hosler (reeder Gulch	Jackson	114 ft	Unsatisfactory	Water Supply
Mcguire	Yamhill	111 ft	Satisfactory	Water Supply
Willow Creek 3 (malheur)	Malheur	110 ft	Unsatisfactory	Irrigation
Pilcher Creek	Union	110 ft	Satisfactory	Irrigation
Agency Valley Dam	Malheur	110 ft	Not assessed	Flood Risk Reduction
Clear Branch	Hood River	110 ft	Unsatisfactory	Irrigation
Warm Springs Dam	Malheur	106 ft	Not assessed	Irrigation
Haystack Dam	Jefferson	105 ft	Not assessed	Irrigation
Cottage Grove Dam	Lane	103 ft	Not assessed	Flood Risk Reduction
Howard Prairie Dam	Jackson	100 ft	Not assessed	Hydroelectric
Timothy Lake	Clackamas	100 ft	Satisfactory	Hydroelectric
Cow Creek Iwr Auxiliary Dam	Douglas	98 ft	Satisfactory	Water Supply
Cow Creek Dam No. 1	Douglas	95 ft	Satisfactory	Irrigation
Bear Creek	Clatsop	94 ft	Poor	Water Supply
Woodrat Knob	Jackson	92 ft	Unsatisfactory	Irrigation
Crowley	Malheur	90 ft	Unsatisfactory	Irrigation
Trail Bridge	Linn	90 ft	Unsatisfactory	Hydroelectric
Gerber Dam	Klamath	88 ft	Not assessed	Irrigation
Cooper Creek (sutherlin)	Douglas	88 ft	Fair	Recreation
Agate Dam	Jackson	86 ft	Not assessed	Irrigation
Wade	Jackson	85 ft	Fair	Irrigation
River Mill	Clackamas	85 ft	Satisfactory	Hydroelectric
Olalla	Lincoln	83 ft	Fair	Other
Lake Creek	Jackson	83 ft	Fair	Irrigation
North Fork	Benton	83 ft	Fair	Water Supply
Currant Creek	Wasco	82 ft	Poor	Irrigation
Unity Dam	Baker	82 ft	Not assessed	Irrigation
Mercer	Polk	81 ft	Poor	Water Supply
Keene Creek Dam	Jackson	78 ft	Not assessed	Hydroelectric
Pony Creek - Upper	Coos	77 ft	Satisfactory	Water Supply
Mill Creek	Lincoln	74 ft	Fair	Water Supply
Thief Valley Dam	Union	73 ft	Not assessed	Irrigation
Happy Valley	Wasco	70 ft	Poor	Irrigation
Walch Dam	Jackson	68 ft	Poor	Irrigation
Pine Hollow	Wasco	66 ft	Satisfactory	Irrigation
Ferry Creek	Curry	65 ft	Unsatisfactory	Water Supply
Silver Creek	Marion	65 ft	Fair	Water Supply
Osborne Creek	Jackson	65 ft	Poor	Irrigation
Drews	Lake	63 ft	Fair	Irrigation
Cottonwood	Lake	63 ft	Fair	Irrigation
Yankee	Jackson	61 ft	Fair	Irrigation
Sams Valley	Jackson	61 ft	Fair	Irrigation
Antelope	Malheur	60 ft	Satisfactory	Irrigation
Baker, Er	Yamhill	59 ft	Fair	Irrigation
Willow Creek	Jackson	59 ft	Satisfactory	Water Supply
Wasco Dam	Wasco	59 ft	Not assessed	Irrigation
Bear Creek 3	Douglas	58 ft	Fair	Water Supply
Pole Creek	Malheur	58 ft	Poor	Irrigation
Toketee	Douglas	58 ft	Unsatisfactory	Hydroelectric
Big Creek #2 (upper)	Lincoln	58 ft	Unsatisfactory	Water Supply
Indian Lake	Umatilla	56 ft	Fair	Recreation
Portland #5 (mt.tabor)	Multnomah	55 ft	Satisfactory	Water Supply
North Fork Diversion Dam	Jackson	55 ft	Fair	Hydroelectric
Joe Fisher	Crook	54 ft	Satisfactory	Irrigation
Hyatt Dam	Jackson	53 ft	Not assessed	Hydroelectric
Portland #3 (washington Park)	Multnomah	53 ft	Satisfactory	Water Supply
Paris	Douglas	51 ft	Fair	Hydroelectric
Rock Creek (wasco)	Wasco	51 ft	Fair	Irrigation
Jubilee Lake	Union	50 ft	Poor	Recreation
Fish Lake Dam	Jackson	50 ft	Not assessed	Flood Risk Reduction
Strong	Josephine	48 ft	Fair	Irrigation
Croft	Polk	45 ft	Satisfactory	Irrigation