Pensacola East Spillway 1, located in Mayes, Oklahoma, is an impressive gravity dam completed in 1940 for the primary purpose of hydroelectric power generation.
Wind
Humidity
Standing at a structural height of 48 feet and a hydraulic height of 15 feet, this dam plays a crucial role in flood risk reduction and energy production in the region. With a normal storage capacity of 1,630,000 acre-feet and a maximum storage capacity of 2,197,000 acre-feet, Pensacola East Spillway 1 serves as a vital water resource management structure in the Tulsa District.
The controlled spillway at Pensacola East Spillway 1 features a width of 407 feet and utilizes Tainter (radial) gates for water release. The dam is associated with two other structures and is regulated by the Federal Energy Regulatory Commission, ensuring compliance with safety standards and inspections. Despite its high hazard potential, the condition assessment for Pensacola East Spillway 1 is currently not available, highlighting the need for ongoing monitoring and risk management measures to safeguard the surrounding area from potential emergencies.
With a history of serving the community for over 80 years, Pensacola East Spillway 1 remains a key infrastructure for water resource management and flood control in the Neosho River watershed. As climate change impacts intensify, the importance of maintaining and updating this critical structure is paramount to ensure the safety and resilience of the region against extreme weather events. The continued collaboration between state and federal agencies will be essential in implementing effective risk management strategies and emergency preparedness measures for Pensacola East Spillway 1.
Year Completed |
1940 |
Dam Length |
505 |
Dam Height |
12.5 |
River Or Stream |
Neosho |
Primary Dam Type |
Gravity |
Surface Area |
46500 |
Hydraulic Height |
15 |
Drainage Area |
10192 |
Nid Storage |
2197000 |
Structural Height |
48 |
Outlet Gates |
Tainter (radial) - 11 |
Hazard Potential |
High |
Nid Height |
48 |
Neosho River Near Langley
|
135cfs |
Spavinaw Creek Near Eucha
|
163cfs |
Big Cabin Creek Near Big Cabin
|
54cfs |
Beaty Creek Near Jay
|
12cfs |
Honey Creek Near South West City
|
14cfs |
Neosho River Near Chouteau
|
273cfs |
| Location | Reservations | Toilets |
|---|---|---|
Cherokee State Park
|
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Spavinaw State Park
|
||
Bernice State Park
|