J B Long and Company #2 is an earth dam located in Lewis and Clark County, Montana, built in 1930. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 250 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 J B Long and Company #2
The primary purpose of J B Long and Company #2 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by J B Long and Co (private). It impounds the Diffused Surface Water near Augusta.
The dam stands 20 feet tall and stretches 250 feet across, and has a maximum storage capacity of 81 acre-feet. Completed in 1930, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Lewis and Clark |
| Nearest City | Augusta |
| River/Stream | Diffused Surface Water |
| Coordinates | 47.40830, -112.59700 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 250 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 81 acre-ft |
| Max Storage | 81 acre-ft |
| Normal Storage | 28 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | J B Long and Co |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03288 |
| Federal ID | MT03288 |
| More Info | State Dam Safety Program |