Jolly Bob Downs
Jolly Bob Downs is an earth dam located in Harmon County, Oklahoma, built in 1978. It carries a Low hazard potential classification.
About Jolly Bob Downs
Jolly Bob Downs is a dam in Harmon, Oklahoma. The dam is owned by Bob Downs (private). It impounds the Tr-grape Creek near Vinson.
The dam stands 29 feet tall and stretches 552 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1978, the structure is 48 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 08/14/2006. That was over 19 years ago.
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Location
| State | Oklahoma |
| County | Harmon |
| Nearest City | Vinson |
| River/Stream | Tr-grape Creek |
| Coordinates | 34.94512, -99.96512 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 552 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 1 acres |
| Max Discharge | 1,450 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | BOB DOWNS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/14/2006 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK21154 |
| Federal ID | OK21154 |
| More Info | State Dam Safety Program |