Montana #18
Montana #18 is an earth dam located in Rosebud County, Montana, built in 1959. It carries a Low hazard potential classification.
About Montana #18
The primary purpose of Montana #18 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 State Of Montana, D.n.r.c., T.l.m.d. (state). It impounds the Geyser Spring Coulee near Sanders.
The dam stands 15 feet tall and stretches 175 feet across, has a maximum storage capacity of 83 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1959, the structure is well into its service life at over 50 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.
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Location
| State | Montana |
| County | Rosebud |
| Nearest City | Sanders |
| River/Stream | Geyser Spring Coulee |
| Coordinates | 46.48570, -107.25490 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 175 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 33 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | STATE OF MONTANA, D.N.R.C., T.L.M.D. |
| Owner Type | State |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01848 |
| Federal ID | MT01848 |
| More Info | State Dam Safety Program |