Brown No.1 is an earth dam located in Ellis County, Oklahoma, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 399 ft long, taller than 62% of U.S. dams with a recorded height. 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 Brown No.1
The primary purpose of Brown No.1 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 Pete Brown Estate C/o Sandy Turner (private). It impounds the Canadian River near Roll.
The dam stands 28 feet tall and stretches 399 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1966, 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 12/14/2010. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Ellis |
| Nearest City | Roll |
| River/Stream | Canadian River |
| Coordinates | 35.91307, -99.54198 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 399 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 1 acres |
| Max Discharge | 1,350 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Pete Brown Estate C/o Sandy Turner |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/14/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK00344 |
| Federal ID | OK00344 |
| More Info | State Dam Safety Program |