Nighswonger is an earth dam located in Harper County, Oklahoma. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall, taller than 62% 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 Nighswonger
Nighswonger is a dam in Harper, Oklahoma. The dam is owned by John Nighswonger (private). It impounds the Sand Creek near Selman.
The dam stands 28 feet tall, creates a reservoir covering 1 acres, and has a maximum storage capacity of 42 acre-feet.
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 | Oklahoma |
| County | Harper |
| Nearest City | Selman |
| River/Stream | Sand Creek |
| Coordinates | 36.67533, -99.47583 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
Storage & Hydraulics
| NID Storage | 42 acre-ft |
| Max Storage | 42 acre-ft |
| Normal Storage | 2 acre-ft |
| Surface Area | 1 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | John Nighswonger |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK83838 |
| Federal ID | OK83838 |
| More Info | State Dam Safety Program |