High Risk Dams in Oregon

Oregon has 30 high hazard dams with a condition assessment of poor or unsatisfactory. These are dams where failure would probably cause loss of human life and where recognized safety deficiencies have been identified.

Of the 149 high hazard dams in Oregon, 30 (20%) have concerning condition ratings — 18 rated poor and 12 rated unsatisfactory.

Dam	County	Height (ft)	Condition	Purpose	Year
Smith	Linn	235	Unsatisfactory	Hydroelectric	1963
Hosler (reeder Gulch	Jackson	114	Unsatisfactory	Water Supply	1928
Willow Creek 3 (malheur)	Malheur	110	Unsatisfactory	Irrigation	1944
Clear Branch	Hood River	110	Unsatisfactory	Irrigation	1969
Bear Creek	Clatsop	94	Poor	Water Supply	1953
Woodrat Knob	Jackson	92	Unsatisfactory	Irrigation	1960
Crowley	Malheur	90	Unsatisfactory	Irrigation	1938
Trail Bridge	Linn	90	Unsatisfactory	Hydroelectric	1963
Currant Creek	Wasco	82	Poor	Irrigation	1984
Mercer	Polk	81	Poor	Water Supply	1961
Happy Valley	Wasco	70	Poor	Irrigation	1938
Walch Dam	Jackson	68	Poor	Irrigation	1954
Ferry Creek	Curry	65	Unsatisfactory	Water Supply	1966
Osborne Creek	Jackson	65	Poor	Irrigation	1964
Pole Creek	Malheur	58	Poor	Irrigation	1944
Toketee	Douglas	58	Unsatisfactory	Hydroelectric	1949
Big Creek #2 (upper)	Lincoln	58	Unsatisfactory	Water Supply	1970
Jubilee Lake	Union	50	Poor	Recreation	1967
Mcmullen Creek	Josephine	45	Unsatisfactory	Recreation	1961
Wageman	Douglas	42	Poor	Irrigation	1971
Wallowa Lake	Wallowa	40	Poor	Irrigation	1931
Mays	Jefferson	38	Poor	Irrigation	1960
Pony Creek - Lower	Coos	38	Poor	Water Supply	1988
Lonesome Lake	Malheur	35	Poor	Irrigation
Barnes Butte	Crook	33	Poor	Irrigation	1956
Duggan	Jackson	24	Poor	Recreation	1965
Morgan Lake	Union	24	Poor	Recreation	1976
Walterville Forebay	Lane	24	Poor	Hydroelectric	1911
Big Creek #1 (lower)	Lincoln	21	Unsatisfactory	Water Supply	1951
Winchester	Douglas	17	Poor	Recreation	1904

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