Henry D Glenn is an earth dam located in Johnston County, Oklahoma. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall. 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 Henry D Glenn
The primary purpose of Henry D Glenn 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 Gene a & Judy Ann Lafitte (private). It impounds the Big Sandy Creek.
The dam stands 24 feet tall, has a maximum storage capacity of 155 acre-feet, and collects water from a drainage area of 500 square miles.
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 03/10/2003. That was over 23 years ago.
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Location
| State | Oklahoma |
| County | Johnston |
| River/Stream | Big Sandy Creek |
| Coordinates | 34.23960, -96.60849 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
Storage & Hydraulics
| NID Storage | 155 acre-ft |
| Max Storage | 155 acre-ft |
| Normal Storage | 47 acre-ft |
| Drainage Area | 500 sq mi |
| Max Discharge | 122 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Gene a & Judy Ann Lafitte |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/10/2003 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK22250 |
| Federal ID | OK22250 |
| More Info | State Dam Safety Program |