Coppedge & Greenboyd is a privately owned earth dam located in Calvin, Oklahoma.
Wind
Humidity
Built in 1968 by the USDA NRCS, this dam stands at a height of 21 feet and spans a length of 3480 feet, creating a reservoir with a storage capacity of 80 acre-feet. The dam's primary purpose is listed as "Other," and its hazard potential is categorized as "Low," with a very high risk assessment rating of 1.
Managed by the Oklahoma Water Resources Board (OWRB), Coppedge & Greenboyd is subject to state regulation, permitting, inspection, and enforcement. The dam is designed to control the flow of TR-Cindy Creek and has a controlled spillway with a width of 1 foot. With a drainage area of 5 acres and a normal storage capacity of 35 acre-feet, this structure plays a crucial role in water resource management in Hughes County, Oklahoma.
Despite its low hazard potential, Coppedge & Greenboyd is considered to have very high risk due to its condition assessment being listed as "Not Rated." Emergency action plans and risk management measures for the dam have not been specified, highlighting the need for continued monitoring and maintenance to ensure the safety and integrity of this vital water resource infrastructure in the region.
Year Completed |
1968 |
Dam Length |
3480 |
Dam Height |
21 |
River Or Stream |
TR-CINDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
21 |
Nid Storage |
80 |
Structural Height |
21 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Canadian River At Calvin
|
361cfs |
Little River Near Sasakwa
|
12cfs |
North Canadian River Near Wetumka
|
209cfs |
Little River Near Tecumseh
|
8cfs |
North Canadian River At Shawnee
|
177cfs |
Deep Fork Near Beggs
|
141cfs |