Oregon Dams

856 dams tracked by the National Inventory of Dams

Total Dams

856

High Hazard

155

18.1%

Poor / Unsatisfactory

47

Average Age

67 yrs

Hazard Classification

High155 (18.1%)
Significant166 (19.4%)
Low535 (62.5%)

Condition Assessment

Satisfactory62 (7.2%)
Fair39 (4.6%)
Poor / Unsatisfactory47 (5.5%)
Not Rated708 (82.7%)

Federal

122

State

14

Local

94

Private

603

Tallest Dams

High Hazard Dams

Poor Condition Dams

All Dams in Oregon

Showing 376400 of 856

Dam NameHeight (ft)YearHazardCondition
Midway Nursery

Washington County

311992LowNot Rated
Middle

Clatsop County

391940HighFair
Micke

Lake County

20SignificantNot Rated
Metropolitan Sludge Ponds (Lagoon)

Lane County

171987LowNot Rated
Metolius (Lagoon)

Jefferson County

13LowNot Rated
Merwin Reservoir #2

Crook County

741968LowNot Rated
Meridian Reservoir

Clackamas County

381994LowNot Rated
Mercer

Polk County

811961HighPoor
Mehlhorn and Bassett

Baker County

201939LowNot Rated
Medford Forest Nursery

Jackson County

171978LowNot Rated
Meacham Lake Dam

Umatilla County

14SignificantNot Rated
Mc Nulty Dam

Malheur County

132004LowPoor
McNary Lock and Dam

Benton County

2201954HighNot Available
Mcmullen Creek

Josephine County

451961HighUnsatisfactory
Mckenzie Canyon Dam

Deschutes County

181959SignificantNot Rated
McKay Dam

Umatilla County

1651927HighNot Available
Mckay Acres Dam

Marion County

171968LowNot Rated
Mcguire

Yamhill County

1112003HighSatisfactory
Mcfall, John Reservoir

Klamath County

221950LowNot Rated
Mccoy Reservoir

Klamath County

241915LowNot Rated
Mc Corral

Lake County

161972LowNot Rated
Mccormick Reservoir

Jackson County

241954SignificantNot Rated
Mays

Jefferson County

381960HighPoor
Mason Dam

Baker County

1731968HighNot Available
Marx Reservoir #1

Polk County

301964LowNot Rated
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.