Big (toole) is an earth dam located in Toole County, Montana, built in 1900. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 390 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 Big (toole)
The primary purpose of Big (toole) 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 Harold E. Henry, Estate of (private). It impounds the Kinyon Coulee near Galata.
The dam stands 12 feet tall and stretches 390 feet across, has a maximum storage capacity of 105 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1900, 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 | Toole |
| Nearest City | Galata |
| River/Stream | Kinyon Coulee |
| Coordinates | 48.67070, -111.27960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 390 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 105 acre-ft |
| Max Storage | 105 acre-ft |
| Normal Storage | 21 acre-ft |
| Drainage Area | 7 sq mi |
| Max Discharge | 100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Harold E. Henry, Estate of |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00391 |
| Federal ID | MT00391 |
| More Info | State Dam Safety Program |