Milner Dam-Middle, Idaho, USA

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Quick Facts About Milner Dam-Middle

Location: Twin Falls, Idaho
Coordinates: 42.524, -114.011
River: Snake River
Primary Purpose: Irrigation
Type: Rockfill Concrete Earth
Commissioned: 1905
Dam Height: 80 ft (24 m)
Dam Length: 404 ft (123 m)
Dam Capacity: 39,000 acre-ft (48,106 Ml)
Condition Assessment: Satisfactory

Milner Dam-Middle Map

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Milner Dam-Middle Information

Milner Dam-Middle is a rockfill concrete earth dam located about 10 miles from Murtaugh, Twin Falls, Idaho.

The dam, which is on the Snake River, was primarily built for Irrigation purposes, but also serves for Recreation and Hydroelectric benefits.

The dam was designed by 1992 rehab-Morrison Knudsen;orig constr.-unknwn and commissioned in 1905 and is currently owned by Milner Dam, Inc..

Milner Dam-Middle Structure

The Milner Dam-Middle is approximately 404 feet (123 m) long, 80 feet (24 m) high and has a structural volume of cubic yards (0 cubic metres).

Milner Dam-Middle Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 39,000 acre-ft (48,106 Ml) and maximum capacity of 39,000 acre-ft (48,106 Ml).

The surface area of the reservoir is 4,000 acres (1,619 ha) and the total catchment area is 17,180 square miles (44,496 square kilometres).

Milner Dam-Middle Spillway

The dam has a 667 feet (203 m) wide controlled spillway with a maximum discharge capacity of 116850 cubic feet per second (3309 cubic metres per second).

Milner Dam-Middle Compared to Four Famous American Dams

Milner Dam-Middle
Twin Falls, Idaho
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) 80 730 550 357 216
Length (Ft) 404 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 39,000 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 17,180 167,800 74,100 3,611 108,355

Milner Dam-Middle Weather

Current Conditions at Milner Dam-Middle

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7-Day Forecast for Milner Dam-Middle

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Milner Dam-Middle Frequently Asked Questions

In which state is the Milner Dam-Middle?

Milner Dam-Middle is in Idaho.

In which county is the Milner Dam-Middle?

Milner Dam-Middle is in Twin Falls County.

How high is the Milner Dam-Middle?

Milner Dam-Middle is 80 feet high.

How long is the Milner Dam-Middle?

Milner Dam-Middle is 404 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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