Jeffries Ma is a privately owned earth dam located in Dewey, Oklahoma, with a primary purpose classified as 'Other.' Constructed in 1981 by the USDA NRCS, this structure stands at a height of 34 feet and stretches 120 feet in length, providing a storage capacity of 50 acre-feet.
Wind
Humidity
With a low hazard potential and a very high risk assessment rating of 1, Jeffries Ma is regulated by the state and inspected regularly by the Oklahoma Water Resources Board.
Situated on TR-GYP CR in the Tulsa District, Jeffries Ma features a controlled spillway and a single valve outlet gate. Despite being labeled as 'Not Rated' in terms of condition assessment, this dam has not been modified since its completion. The surrounding area boasts a drainage area of 140 square miles, with a maximum discharge capacity of 223 cubic feet per second. It serves as a vital resource for water management and conservation efforts in the region, showcasing the importance of sustainable infrastructure for climate resilience.
Year Completed |
1981 |
Dam Length |
120 |
Dam Height |
34 |
River Or Stream |
TR-GYP CR |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
34 |
Drainage Area |
140 |
Nid Storage |
50 |
Structural Height |
34 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
North Canadian River At Woodward
|
80cfs |
North Canadian River Near Seiling
|
105cfs |
Washita River Near Hammon
|
13cfs |
Washita River Near Cheyenne
|
11cfs |
Cimarron River Near Waynoka
|
150cfs |
Washita River Near Foss
|
6cfs |