Pettegrew Pond No.1 is an earth dam located in Fall River County, South Dakota, built in 1968. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 850 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 Pettegrew Pond No.1
The primary purpose of Pettegrew Pond 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 Mykris, Michael, & Carolyn Living Trust (private). It impounds the Tr-horsehead Creek.
The dam stands 17 feet tall and stretches 850 feet across, and has a maximum storage capacity of 114 acre-feet. Completed in 1968, 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 | Fall River |
| Nearest City | None |
| River/Stream | Tr-horsehead Creek |
| Coordinates | 43.05426, -103.24487 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 850 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 114 acre-ft |
| Max Storage | 114 acre-ft |
| Normal Storage | 88 acre-ft |
| Max Discharge | 2,200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Mykris, Michael, & Carolyn Living Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01037 |
| Federal ID | SD01037 |
| More Info | State Dam Safety Program |