Williamson Gss No.1 is an earth dam located in Garvin County, Oklahoma, built in 1976. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 350 ft long, taller than 50% 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 Williamson Gss No.1
Williamson Gss No.1 is a dam in Garvin, Oklahoma. The dam is owned by Jack and Linda Justice (private). It impounds the Tr-washita River near Whitebead.
The dam stands 25 feet tall and stretches 350 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1976, the structure is 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 02/05/2002. That was over 24 years ago.
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Location
| State | Oklahoma |
| County | Garvin |
| Nearest City | Whitebead |
| River/Stream | Tr-washita River |
| Coordinates | 34.78191, -97.38084 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 350 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 400 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Jack and Linda Justice |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 02/05/2002 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK21128 |
| Federal ID | OK21128 |
| More Info | State Dam Safety Program |