Earl Mcpherson Dam No.1 is an earth dam located in Meade County, South Dakota, built in 1958. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 266 ft long, taller than 68% 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 Earl Mcpherson Dam No.1
The primary purpose of Earl Mcpherson Dam 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 Earl Mcpherson (private). It impounds the Tributary of Alkali Creek.
The dam stands 30 feet tall and stretches 266 feet across, and has a maximum storage capacity of 45 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 | Meade |
| Nearest City | None |
| River/Stream | Tributary of Alkali Creek |
| Coordinates | 44.29666, -102.79666 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 266 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 45 acre-ft |
| Max Storage | 45 acre-ft |
| Normal Storage | 30 acre-ft |
| Max Discharge | 600 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Earl Mcpherson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01007 |
| Federal ID | SD01007 |
| More Info | State Dam Safety Program |