Palmer Pearson No.1 is an earth dam located in Haakon County, South Dakota, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 1,200 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 Palmer Pearson No.1
The primary purpose of Palmer Pearson 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 Riggle Family LP (private). It impounds the West Plum Creek-tr.
The dam stands 12 feet tall and stretches 1,200 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 129 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1960, 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 | Haakon |
| River/Stream | West Plum Creek-tr |
| Coordinates | 44.27614, -101.71226 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 129 acre-ft |
| Max Storage | 129 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Riggle Family LP |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01842 |
| Federal ID | SD01842 |
| More Info | State Dam Safety Program |