Blakely Mountain Dam, Arkansas, USA

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Quick Facts About Blakely Mountain Dam

Location: Garland, Arkansas
Coordinates: 34.573008, -93.1950119
River: Ouachita River
Primary Purpose: Flood Risk Reduction
Type: Earth
Commissioned: 1953
Dam Height: 226 ft (69 m)
Dam Length: 1,100 ft (335 m)
Dam Capacity: 3,760,700 acre-ft (4,638,748 Ml)
Condition Assessment: Not Available

Blakely Mountain Dam Map

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Blakely Mountain Dam Information

Blakely Mountain Dam is an earthen embankment dam located about 4 miles from Mountain Pine, Garland, Arkansas.

The dam, which is on the Ouachita River, was primarily built for flood risk reduction purposes, but also serves for Recreation, Hydroelectric and Water Supply benefits.

The dam was designed by CEMVK and commissioned in 1953 and is currently owned by USACE – Vicksburg District.

Blakely Mountain Dam Structure

The Blakely Mountain Dam is approximately 1,100 feet (335 m) long, 226 feet (69 m) high and has a structural volume of 4,215,000 cubic yards (3,222,599 cubic metres).

Blakely Mountain Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 2,151,100 acre-ft (2,653,339 Ml) and maximum capacity of 3,760,700 acre-ft (4,638,748 Ml).

The surface area of the reservoir is 40,100 acres (16,228 ha) and the total catchment area is 1,105 square miles (2,862 square kilometres).

Blakely Mountain Dam Spillway

The dam has a 200 feet (61 m) wide uncontrolled spillway with a maximum discharge capacity of 45000 cubic feet per second (1274 cubic metres per second).

Blakely Mountain Dam Compared to Four Famous American Dams

Blakely Mountain Dam
Garland, Arkansas
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) 226 730 550 357 216
Length (Ft) 1,100 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 3,760,700 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 1,105 167,800 74,100 3,611 108,355

Blakely Mountain Dam Weather

Current Conditions at Blakely Mountain Dam

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7-Day Forecast for Blakely Mountain Dam

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Blakely Mountain Dam Frequently Asked Questions

In which state is the Blakely Mountain Dam?

Blakely Mountain Dam is in Arkansas.

In which county is the Blakely Mountain Dam?

Blakely Mountain Dam is in Garland County.

How high is the Blakely Mountain Dam?

Blakely Mountain Dam is 226 feet high.

How long is the Blakely Mountain Dam?

Blakely Mountain Dam is 1,100 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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