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 351375 of 856

Dam NameHeight (ft)YearHazardCondition
Mud Creek #1 Reservoir

Malheur County

101957LowNot Rated
Mt. Springs Ranch Dam

Polk County

421969SignificantNot Rated
Mt. Hood Community College Dam

Multnomah County

581968SignificantNot Rated
Moss Flat

Lake County

11LowNot Rated
Mosley Reservoir

Baker County

201950LowNot Rated
Mortimer Canyon Dam

Harney County

301951LowNot Rated
Morrow Brothers (Jefferson)

Jefferson County

251970LowNot Rated
Morrison Dam

Malheur County

331911LowPoor
Morgan Lake

Union County

241976HighPoor
Morgan Brothers Dam

Polk County

351962LowPoor
Morfitt Reservoir

Baker County

201914LowNot Rated
Moores Hollow

Malheur County

351964SignificantNot Available
Moore-Emory

Benton County

331962LowNot Rated
Moon Reservoir

Harney County

381969SignificantNot Rated
Momtazi - Reservoir #2

Yamhill County

392000LowNot Rated
Mompano

Clackamas County

441971HighSatisfactory
Moffitti Marsh Dam

Polk County

101995LowFair
Mitchell - Stanley Reservoir

Clackamas County

261960LowNot Rated
Mission Creek Dam and Reservoir Company

Marion County

251972LowNot Rated
Minam Lake Reservoir Company

Wallowa County

141922LowNot Rated
Milton-Freewater Lagoon N-3

Umatilla County

121988LowNot Rated
Miller Reservoir (Wasco)

Wasco County

301952LowNot Rated
Miller Reservoir (Harney)

Harney County

481947LowNot Rated
Miller Dam

Wheeler County

321990LowNot Rated
Mill Creek

Lincoln County

741969HighFair
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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.