Golden Gate Dam is a gravity dam located in Blaine County, Montana. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 517 ft long. 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 Golden Gate Dam
The primary purpose of Golden Gate Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Doi BLM (federal). It impounds the Unnamed Drainage.
The dam stands 16 feet tall and stretches 517 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 73 acre-feet, and collects water from a drainage area of 10 square miles.
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. The most recent inspection on record was 09/05/2018.
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Location
| State | Montana |
| County | Blaine |
| River/Stream | Unnamed Drainage |
| Coordinates | 48.92365, -109.37562 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Length | 517 ft |
Storage & Hydraulics
| NID Storage | 73 acre-ft |
| Max Storage | 73 acre-ft |
| Normal Storage | 8 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 10 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/05/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03412 |
| Federal ID | MT03412 |
| More Info | State Dam Safety Program |