Hearst Lake is an other dam located in Deer Lodge County, Montana, built in 1898. It carries a Low hazard potential classification.
Dam profile
NID height · 9 ft9 ft tall and 300 ft long. 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 Hearst Lake
The primary purpose of Hearst Lake is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Butte-silver Bow (local government). It impounds the Grays Gulch near Anaconda.
The dam stands 9 feet tall and stretches 300 feet across, and has a maximum storage capacity of 140 acre-feet. Completed in 1898, the structure is over a century 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.
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Location
| State | Montana |
| County | Deer Lodge |
| Nearest City | Anaconda |
| River/Stream | Grays Gulch |
| Coordinates | 46.09762, -113.07023 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 300 ft |
| Year Completed | 1898 (128 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 140 acre-ft |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Butte-silver Bow |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03382 |
| Federal ID | MT03382 |
| More Info | State Dam Safety Program |