Twin Falls Intake Dam is a concrete dam located in Twin Falls County, Idaho, built in 1935. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 203 ft long, taller than 68% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Twin Falls Intake Dam
The primary purpose of Twin Falls Intake Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Idaho Power Company (private). It impounds the Snake River.
The dam stands 30 feet tall and stretches 203 feet across, creates a reservoir covering 85 acres, has a maximum storage capacity of 955 acre-feet, and collects water from a drainage area of 19,000 square miles. Completed in 1935, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/19/2017.
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Location
| State | Idaho |
| County | Twin Falls |
| Nearest City | None |
| River/Stream | Snake River |
| Coordinates | 42.58895, -114.35531 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 203 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 955 acre-ft |
| Max Storage | 955 acre-ft |
| Normal Storage | 955 acre-ft |
| Surface Area | 85 acres |
| Drainage Area | 19,000 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Idaho Power Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/19/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00051 |
| Federal ID | ID00051S001 |
| More Info | State Dam Safety Program |