Walton Allen is an earth dam located in Grady County, Oklahoma, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 310 ft long, taller than 68% 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 Walton Allen
Walton Allen is a dam in Grady, Oklahoma. The dam is owned by Richard L Allen (private). It impounds the Tr-rock Hollow Creek near Chickasha.
The dam stands 30 feet tall and stretches 310 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 130 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
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 08/31/2010. That was over 16 years ago.
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Location
| State | Oklahoma |
| County | Grady |
| Nearest City | Chickasha |
| River/Stream | Tr-rock Hollow Creek |
| Coordinates | 35.04800, -98.00604 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 310 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 130 acre-ft |
| Max Storage | 130 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 1 acres |
| Max Discharge | 530 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Richard L Allen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/31/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12907 |
| Federal ID | OK12907 |
| More Info | State Dam Safety Program |