E. Hoffman No.9 is an earth dam located in Meade County, South Dakota, built in 1946. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 500 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 E. Hoffman No.9
The primary purpose of E. Hoffman No.9 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 E. Hoffman (private). It impounds the Tr Moreau.
The dam stands 27 feet tall and stretches 500 feet across, and has a maximum storage capacity of 135 acre-feet. Completed in 1946, the structure is well-established, with more than 75 years of service.
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 | Meade |
| Nearest City | None |
| River/Stream | Tr Moreau |
| Coordinates | 45.01666, -102.33332 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 500 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 135 acre-ft |
| Max Storage | 135 acre-ft |
| Normal Storage | 53 acre-ft |
| Max Discharge | 4,000 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | E. Hoffman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00304 |
| Federal ID | SD00304 |
| More Info | State Dam Safety Program |