Ivy #3 is an earth dam located in Musselshell County, Montana, built in 1974. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 924 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 Ivy #3
The primary purpose of Ivy #3 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 Flatwillow Colony Ranch (private). It impounds the Little Wall Creek near Mosby.
The dam stands 20 feet tall and stretches 924 feet across, has a maximum storage capacity of 340 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1974, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Musselshell |
| Nearest City | Mosby |
| River/Stream | Little Wall Creek |
| Coordinates | 46.72177, -108.53680 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 924 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 340 acre-ft |
| Max Storage | 340 acre-ft |
| Normal Storage | 200 acre-ft |
| Drainage Area | 6 sq mi |
| Max Discharge | 1,100 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Flatwillow Colony Ranch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02847 |
| Federal ID | MT02847 |
| More Info | State Dam Safety Program |