Quick Facts About Angostura Dam
Angostura Dam Map
Angostura Dam Information
Angostura Dam is a concrete gravity dam located about 50 miles from Wasta, Fall River, South Dakota.
The dam, which is on the Cheyenne River, was primarily built for Irrigation purposes, but also serves for Recreation benefits.
The dam was designed by US Bureau of Reclamation and commissioned in 1949 and is currently owned by US Bureau of Reclamation.
Angostura Dam Structure
The Angostura Dam is approximately 2,030 feet (619 m) long, 193 feet (59 m) high and has a structural volume of 1,088,640 cubic yards (832,325 cubic metres).
Angostura Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 86,160 acre-ft (106,277 Ml) and maximum capacity of 197,100 acre-ft (243,119 Ml).
The surface area of the reservoir is 4,706 acres (1,904 ha) and the total catchment area is 9,034 square miles (23,398 square kilometres).
Angostura Dam Spillway
The dam spillway has a maximum discharge capacity of 248000 cubic feet per second (7023 cubic metres per second).
Angostura Dam Compared to Four Famous American Dams
| Angostura Dam Fall River, South Dakota |
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) | 193 | 730 | 550 | 357 | 216 |
| Length (Ft) | 2,030 | 1,244 | 5,673 | 6,920 | 1,565 |
| Storage Volume (acre-ft) | 197,100 | 30,237,000 | 9,562,000 | 3,540,000 | 29,875,000 |
| Drainage Area (sq miles) | 9,034 | 167,800 | 74,100 | 3,611 | 108,355 |
Angostura Dam Weather
Current Conditions at Angostura Dam
Failed to fetch current weather data.7-Day Forecast for Angostura Dam
Failed to fetch weather forecast data.Angostura Dam Frequently Asked Questions
Angostura Dam is in South Dakota.
Angostura Dam is in Fall River County.
Angostura Dam is 193 feet high.
Angostura Dam is 2,030 feet long.
More Dams in South Dakota:
Angostura DamBelle Fourche Dam
Carthage Dam
Columbia Road Dam
Deerfield Dam
East Vermillion Dam
Elm Lake Dam
Grizzly Gulch Tailings Dam
Houghton Dam
Lacreek #10 Dam
Lacreek Dam No. 9
Lake Wanalain Dam
Mina Dam
Mitchell Dam
Oglala Dam
Pactola Dam
Redfield Lake Dam
Richmond Dam
Shadehill Dam
Sheridan Lake Dam
Willow Creek Dam
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