Mathis & Terrora Dam

Mathis & Terrora Dam Quick Facts

Location: Rabun, Georgia
Coordinates: 34.765309, -83.416215
River: Tallulah River
Primary Purpose: Hydroelectric
Type: Buttress
Commissioned: 1925
Dam Height: 113 ft (34 m)
Dam Length: 764 ft (233 m)
Dam Capacity: 31,000 acre-ft (38,238 Ml)
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Mathis & Terrora Dam Map

Mathis & Terrora Dam Information

Mathis & Terrora Dam is a buttress dam located in None, Rabun, Georgia.

The dam, which is on the Tallulah River, was primarily built for Hydroelectric purposes, but also serves for Fish and Wildlife Pond and Recreation benefits.

The dam was designed by and commissioned in 1925 and is currently owned by Georgia Power Company.

Mathis & Terrora Dam Structure

The Mathis & Terrora Dam is approximately 764 feet (233 m) long, 113 feet (34 m) high and has a structural volume of cubic yards (0 cubic metres).

Mathis & Terrora Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 27,250 acre-ft (33,612 Ml) and maximum capacity of 31,000 acre-ft (38,238 Ml).

The surface area of the reservoir is 834 acres (338 ha) and the total catchment area is 151 square miles (391 square kilometres).

Mathis & Terrora Dam Spillway

The dam has a 252 feet (77 m) wide controlled spillway with a maximum discharge capacity of 38000 cubic feet per second (1076 cubic metres per second).

Mathis & Terrora Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Mathis & Terrora Dam
Rabun, Georgia
Height (ft)
113
Length (Ft)
764
Storage Volume (acre-ft)
31,000
Drainage Area (sq miles)
151
Hoover Dam
Clark County, Nevada
Height (ft)
730
Length (Ft)
1,244
Storage Volume (acre-ft)
30,237,000
Drainage Area (sq miles)
167,800
Grand Coulee Dam
Okanogan County, Washington
Height (ft)
550
Length (Ft)
5,673
Storage Volume (acre-ft)
9,562,0000
Drainage Area (sq miles)
74,100
Theodore Roosevelt Dam
Maricopa County, Arizona
Height (ft)
357
Length (Ft)
1,208
Storage Volume (acre-ft)
3,411,500
Drainage Area (sq miles)
5,736
Oroville Dam
Butte County, California
Height (ft)
235
Length (Ft)
6,920
Storage Volume (acre-ft)
3,540,000
Drainage Area (sq miles)
3,611
Glen Canyon Dam
Coconino County, Arizona
Height (ft)
216
Length (Ft)
1,565
Storage Volume (acre-ft)
29,875,000
Drainage Area (sq miles)
108,355

Mathis & Terrora Dam Weather

Current Conditions at Mathis & Terrora Dam

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7-Day Forecast for Mathis & Terrora Dam

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Mathis & Terrora Dam Frequently Asked Questions

In which state is the Mathis & Terrora Dam?

Mathis & Terrora Dam is in Georgia.

In which county is the Mathis & Terrora Dam?

Mathis & Terrora Dam is in Rabun County.

How high is the Mathis & Terrora Dam?

Mathis & Terrora Dam is 113 feet high.

How long is the Mathis & Terrora Dam?

Mathis & Terrora Dam is 764 feet long.

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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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