Walt Hoffman No.1 is an earth dam located in Pennington County, South Dakota, built in 1958. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 245 ft long, taller than 59% of U.S. dams with a recorded height. 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 Walt Hoffman No.1
The primary purpose of Walt Hoffman No.1 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 Walt Hoffman (private). It impounds the Tr-cheyenne.
The dam stands 27 feet tall and stretches 245 feet across, and has a maximum storage capacity of 50 acre-feet. Completed in 1958, 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 | South Dakota |
| County | Pennington |
| Nearest City | None |
| River/Stream | Tr-cheyenne |
| Coordinates | 44.18999, -102.20999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 245 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 38 acre-ft |
| Max Discharge | 312 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Walt Hoffman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01972 |
| Federal ID | SD01972 |
| More Info | State Dam Safety Program |