Morena Dam, California, USA

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Quick Facts About Morena Dam

Location: San Diego, California
Coordinates: 32.686, -116.5479
River: Cottonwood Cr River
Primary Purpose: Water Supply
Type: Rockfill
Commissioned: 1912
Dam Height: 181 ft (55 m)
Dam Length: 550 ft (168 m)
Dam Capacity: 50,206 acre-ft (61,928 Ml)

Morena Dam Map

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Morena Dam Information

Morena Dam is a rockfill dam located about 13 miles from Barrett Junction, San Diego, California.

The dam, which is on the Cottonwood Cr River, was primarily built for Water Supply purposes, but also serves for benefits.

The dam was designed by and commissioned in 1912 and is currently owned by City of San Diego.

Morena Dam Structure

The Morena Dam is approximately 550 feet (168 m) long, 181 feet (55 m) high and has a structural volume of 335,300 cubic yards (256,355 cubic metres).

Morena Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of acre-ft (0 Ml) and maximum capacity of 50,206 acre-ft (61,928 Ml).

The surface area of the reservoir is 1,475 acres (597 ha) and the total catchment area is 114 square miles (295 square kilometres).

Morena Dam Spillway

According to the latest available data, the Morena Dam does not have any spillways.

Morena Dam Compared to Four Famous American Dams

Morena Dam
San Diego, California
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) 181 730 550 357 216
Length (Ft) 550 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 50,206 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 114 167,800 74,100 3,611 108,355

Morena Dam Weather

Current Conditions at Morena Dam

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7-Day Forecast for Morena Dam

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Morena Dam Frequently Asked Questions

In which state is the Morena Dam?

Morena Dam is in California.

In which county is the Morena Dam?

Morena Dam is in San Diego County.

How high is the Morena Dam?

Morena Dam is 181 feet high.

How long is the Morena Dam?

Morena Dam is 550 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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