Green Ab is an earth dam located in McClain County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 980 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 Green Ab
Green Ab is a dam in McClain, Oklahoma. The dam is owned by David L & Miriam L Murphy (private). It impounds the Tr-walnut Creek near Purcell.
The dam stands 23 feet tall and stretches 980 feet across, creates a reservoir covering 13 acres, and has a maximum storage capacity of 190 acre-feet. Completed in 1960, 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 07/25/2005. That was over 21 years ago.
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Location
| State | Oklahoma |
| County | McClain |
| Nearest City | Purcell |
| River/Stream | Tr-walnut Creek |
| Coordinates | 34.99438, -97.43455 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 980 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 190 acre-ft |
| Max Storage | 190 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 13 acres |
| Max Discharge | 1,540 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | David L & Miriam L Murphy |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/25/2005 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12494 |
| Federal ID | OK12494 |
| More Info | State Dam Safety Program |