John Day Lock and Dam, Oregon, USA

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Quick Facts About John Day Lock and Dam

Location: Klickitat, Oregon
Coordinates: 45.717948, -120.695396
River: Columbia River
Primary Purpose: Navigation
Type: Earth
Commissioned: 1968
Dam Height: 118 ft (36 m)
Dam Length: 5,900 ft (1,798 m)
Dam Capacity: 2,530,000 acre-ft (3,120,704 Ml)
Condition Assessment: Not Available

John Day Lock and Dam Map

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John Day Lock and Dam Information

John Day Lock and Dam is an earthen embankment dam located in Rufus, Klickitat, Oregon.

The dam, which is on the Columbia River, was primarily built for Navigation purposes, but also serves for Irrigation, Recreation, Hydroelectric and Flood Risk Reduction benefits.

The dam was designed by and commissioned in 1968 and is currently owned by USACE – Portland District.

John Day Lock and Dam Structure

The John Day Lock and Dam is approximately 5,900 feet (1,798 m) long, 118 feet (36 m) high and has a structural volume of 2,830,000 cubic yards (2,163,691 cubic metres).

John Day Lock and Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 530,000 acre-ft (653,744 Ml) and maximum capacity of 2,530,000 acre-ft (3,120,704 Ml).

The surface area of the reservoir is 55,000 acres (22,258 ha) and the total catchment area is 226,000 square miles (585,338 square kilometres).

John Day Lock and Dam Spillway

The dam has a 1252 feet (382 m) wide controlled spillway with a maximum discharge capacity of 2250000 cubic feet per second (63713 cubic metres per second).

John Day Lock and Dam Compared to Four Famous American Dams

John Day Lock and Dam
Klickitat, Oregon
Hoover Dam
Clark County, Nevada
Grand Coulee Dam
Okanogan County, Washington
Theodore Roosevelt Dam
Maricopa County, Arizona
Glen Canyon Dam
Coconino County, Arizona
Height (ft) 118 730 550 357 216
Length (Ft) 5,900 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 2,530,000 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 226,000 167,800 74,100 3,611 108,355

John Day Lock and Dam Weather

Current Conditions at John Day Lock and Dam

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7-Day Forecast for John Day Lock and Dam

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John Day Lock and Dam Frequently Asked Questions

In which state is the John Day Lock and Dam?

John Day Lock and Dam is in Oregon.

In which county is the John Day Lock and Dam?

John Day Lock and Dam is in Klickitat County.

How high is the John Day Lock and Dam?

John Day Lock and Dam is 118 feet high.

How long is the John Day Lock and Dam?

John Day Lock and Dam is 5,900 feet long.

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams

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