Idaho Falls Upper Diversion Dam No 1 is a dam located in Bonneville County, Idaho, built in 1982. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 615 ft long, taller than 62% 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 embankment section and the water level is illustrative.
About Idaho Falls Upper Diversion Dam No 1
The primary purpose of Idaho Falls Upper Diversion Dam No 1 is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is public utility-owned. It impounds the Snake River Columbia River near Idaho Falls.
The dam stands 28 feet tall and stretches 615 feet across, creates a reservoir covering 50 acres, has a storage capacity of 362 acre-feet, and collects water from a drainage area of 9,050 square miles. Completed in 1982, the structure is 44 years old.
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 10/31/2018.
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Location
| State | Idaho |
| County | Bonneville |
| Nearest City | Idaho Falls |
| River/Stream | Snake River Columbia River |
| Coordinates | 43.55270, -112.05090 |
Physical Characteristics
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 615 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 362 acre-ft |
| Normal Storage | 362 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 9,050 sq mi |
| Max Discharge | 60,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/31/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00434 |
| Federal ID | ID00434 |
| More Info | State Dam Safety Program |