Brogan Dam is an earth dam located in Washita County, Oklahoma, built in 1983. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 600 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 Brogan Dam
The primary purpose of Brogan Dam 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 Bar Lazy B Inc (private). It impounds the Tri. to Cobb Creek.
The dam stands 15 feet tall and stretches 600 feet across, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1983, the structure is 43 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.
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Location
| State | Oklahoma |
| County | Washita |
| River/Stream | Tri. to Cobb Creek |
| Coordinates | 35.34175, -98.65787 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 600 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 60 acre-ft |
| Drainage Area | 1 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Bar Lazy B Inc |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK03033 |
| Federal ID | OK03033 |
| More Info | State Dam Safety Program |