Black Hack Jr
Black Hack Jr is an earth dam located in Hughes County, Oklahoma, built in 1976. It carries a Low hazard potential classification.
About Black Hack Jr
The primary purpose of Black Hack Jr is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by James C Walker (private). It impounds the Tr-coal Cr near Canadian River.
The dam stands 30 feet tall and stretches 570 feet across, and has a maximum storage capacity of 150 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 08/09/2011. That was over 14 years ago.
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Location
| State | Oklahoma |
| County | Hughes |
| Nearest City | Canadian River |
| River/Stream | Tr-coal Cr |
| Coordinates | 35.01208, -96.14835 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 570 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 75 acre-ft |
| Max Discharge | 220 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | JAMES C WALKER |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/09/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK13136 |
| Federal ID | OK13136 |
| More Info | State Dam Safety Program |