Guajataca Dam, Puerto Rico, USA

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Quick Facts About Guajataca Dam

Location: Quebradillas, Puerto Rico
Coordinates: 18.4, -66.92333
River: Guajataca River
Primary Purpose: Hydroelectric
Type: Earth
Commissioned: 1927
Dam Height: 120 ft (37 m)
Dam Length: 984 ft (300 m)
Dam Capacity: 49,200 acre-ft (60,687 Ml)

Guajataca Dam Map

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Guajataca Dam Information

Guajataca Dam is an earthen embankment dam located about 7 miles from Isabela, Quebradillas, Puerto Rico.

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

The dam was designed by PUERTO RICO ELECTRIC POWER AUTHORITY and commissioned in 1927 and is currently owned by PUERTO RICO ELECTRIC POWER AUTHORITY.

Guajataca Dam Structure

The Guajataca Dam is approximately 984 feet (300 m) long, 120 feet (37 m) high and has a structural volume of 540,200 cubic yards (413,013 cubic metres).

Guajataca Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 32,600 acre-ft (40,211 Ml) and maximum capacity of 49,200 acre-ft (60,687 Ml).

The surface area of the reservoir is 1,000 acres (405 ha) and the total catchment area is 30 square miles (78 square kilometres).

Guajataca Dam Spillway

The dam has a 646 feet (197 m) wide uncontrolled spillway with a maximum discharge capacity of 34600 cubic feet per second (980 cubic metres per second).

Guajataca Dam Compared to Four Famous American Dams

Guajataca Dam
Quebradillas, Puerto Rico
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) 120 730 550 357 216
Length (Ft) 984 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 49,200 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 30 167,800 74,100 3,611 108,355

Guajataca Dam Weather

Current Conditions at Guajataca Dam

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7-Day Forecast for Guajataca Dam

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Guajataca Dam Frequently Asked Questions

In which state is the Guajataca Dam?

Guajataca Dam is in Puerto Rico.

In which county is the Guajataca Dam?

Guajataca Dam is in Quebradillas County.

How high is the Guajataca Dam?

Guajataca Dam is 120 feet high.

How long is the Guajataca Dam?

Guajataca Dam is 984 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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