John Job is an earth dam located in Wibaux County, Montana, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 392 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 John Job
The primary purpose of John Job is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by John Job (private). It impounds the Tr-box Elder Creek near Savage.
The dam stands 18 feet tall and stretches 392 feet across, has a maximum storage capacity of 57 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1964, 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 | Wibaux |
| Nearest City | Savage |
| River/Stream | Tr-box Elder Creek |
| Coordinates | 47.08199, -104.28043 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 392 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 57 acre-ft |
| Max Storage | 57 acre-ft |
| Normal Storage | 21 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 740 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | John Job |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01145 |
| Federal ID | MT01145 |
| More Info | State Dam Safety Program |