Shawver John is an earth dam located in Blaine County, Oklahoma, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 475 ft long, taller than 55% 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 Shawver John
The primary purpose of Shawver John is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Joyce Shawver (private). It impounds the Tr-lumpmouth Cr near Union City.
The dam stands 26 feet tall and stretches 475 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 130 acre-feet. Completed in 1965, 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. The most recent inspection on record was 07/16/2009. That was over 17 years ago.
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Location
| State | Oklahoma |
| County | Blaine |
| Nearest City | Union City |
| River/Stream | Tr-lumpmouth Cr |
| Coordinates | 35.58241, -98.32836 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 475 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 130 acre-ft |
| Max Storage | 130 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 2,480 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Joyce Shawver |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/16/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK13242 |
| Federal ID | OK13242 |
| More Info | State Dam Safety Program |