L. M. Hanson is an earth dam located in Hyde County, South Dakota, built in 1956. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 360 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 L. M. Hanson
The primary purpose of L. M. Hanson 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 L.m. Hanson (private). It impounds the South Medicine Creek.
The dam stands 21 feet tall and stretches 360 feet across, and has a maximum storage capacity of 126 acre-feet. Completed in 1956, 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 | Hyde |
| Nearest City | None |
| River/Stream | South Medicine Creek |
| Coordinates | 44.47554, -99.62852 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 360 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 126 acre-ft |
| Max Storage | 126 acre-ft |
| Normal Storage | 62 acre-ft |
| Max Discharge | 1,320 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | L.m. Hanson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00285 |
| Federal ID | SD00285 |
| More Info | State Dam Safety Program |