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| Keystone Dam | |
|---|---|
| Name | Keystone Dam |
| Country | United States |
| Location | near Sand Springs, Oklahoma, Tulsa County, Oklahoma / Osage County, Oklahoma |
| Status | Operational |
| Construction begin | 1957 |
| Opening | 1964 |
| Owner | United States Army Corps of Engineers |
| Dam type | Concrete gravity |
| Dam length | 4,500 ft |
| Dam height | 131 ft |
| Reservoir | Keystone Lake |
| Plant operator | United States Army Corps of Engineers |
| Plant capacity | 108 MW |
Keystone Dam Keystone Dam is a concrete gravity dam on the Arkansas River in northeastern Oklahoma, completed in the mid-20th century to provide flood control, hydroelectric generation, municipal water supply, and recreation. The project, managed by the United States Army Corps of Engineers, created Keystone Lake and altered regional infrastructure, influencing nearby communities such as Tulsa, Oklahoma, Sand Springs, Oklahoma, and Catoosa, Oklahoma. The dam is a component of broader federal water-resource development programs associated with postwar projects like those administered by the U.S. Bureau of Reclamation and coordinated with state agencies in Oklahoma.
The conceptual origins trace to federal studies following major floods on the Arkansas River and the catastrophic 1927 flood that shaped national water policy alongside measures like the Flood Control Act of 1936, leading to regional planning involving the U.S. Army Corps of Engineers and state officials from Oklahoma. Site selection near Sand Springs, Oklahoma involved consultations with municipal leaders from Tulsa, Oklahoma, industrial stakeholders such as the Mid-Continent Oil and Gas Association, and railroad interests including the Atchison, Topeka and Santa Fe Railway. Formal authorization came under postwar legislation that also affected projects like Pensacola Dam and Dardanelle Lock and Dam, with construction initiated in 1957 amid Cold War-era infrastructure investment and New Deal legacy programs.
Engineers from the United States Army Corps of Engineers designed a concrete gravity structure with a controlled spillway and gated outlet works influenced by contemporary designs seen at Glen Canyon Dam and Barker Dam (Texas). Primary contractors included regional construction firms that had worked on projects for entities such as Kaiser Aluminum and Skanska USA, employing techniques similar to those used at Hoover Dam studies and reinforced by standards from the American Society of Civil Engineers. Construction phases addressed cofferdam erection, foundation excavation near the Arkansas River channel, concrete placement, and installation of hydropower equipment supplied by manufacturers associated with General Electric and Westinghouse Electric Corporation.
The dam extends roughly 4,500 feet with a structural height near 131 feet and incorporates gated spillways, outlet works, and an intake structure serving a hydroelectric plant with around 108 megawatts of installed capacity; operational protocols align with flood control plans coordinated with the Federal Emergency Management Agency and regional utilities such as Oklahoma Gas & Electric Company. Water releases and navigation considerations integrate with the McClellan-Kerr Arkansas River Navigation System and interstate compacts involving upstream authorities like those in Arkansas and Kansas. Routine operations involve coordination between the United States Army Corps of Engineers Tulsa District, regional emergency managers from Tulsa County, Oklahoma agencies, and environmental regulators including the Environmental Protection Agency.
Keystone Lake, formed by impoundment of the Arkansas River, has a variable surface area and storage capacity used for municipal water supply to Tulsa, Oklahoma and surrounding communities such as Sand Springs, Oklahoma and Mounds, Oklahoma. The reservoir supports navigation links with the McClellan-Kerr Arkansas River Navigation System and provides water-resource storage referenced in state water planning by the Oklahoma Water Resources Board. Reservoir management addresses sedimentation patterns influenced by tributaries including the Cimarron River and the California Creek (Oklahoma), and reservoir levels are adjusted in coordination with interstate agreements and federal flood-control directives.
The powerplant uses multiple turbines to supply peaking and baseload energy to regional grids interconnected with utilities such as Oklahoma Gas & Electric Company and wholesale markets overseen by Midcontinent Independent System Operator. Flood control operations follow protocols derived from federal flood control legislation and lessons from historical events like the Great Mississippi Flood of 1927, with coordination among the United States Army Corps of Engineers, Federal Emergency Management Agency, and local emergency management agencies in Tulsa County, Oklahoma and Osage County, Oklahoma. The project contributes to regional resilience alongside other reservoirs on the Arkansas River system, including facilities managed by the U.S. Bureau of Reclamation and state floodplain managers.
Keystone Lake is a regional recreation destination that supports boating, angling, camping, and trails used by visitors from Tulsa, Oklahoma and surrounding towns; recreational facilities are managed by the United States Army Corps of Engineers and local park districts such as the Sand Springs Parks and Recreation Department. The reservoir and downstream habitats provide wildlife value for species monitored by the Oklahoma Department of Wildlife Conservation and federal agencies like the U.S. Fish and Wildlife Service, while environmental assessments consider impacts on fish communities similar to those documented at reservoirs like Lake Texoma and Grand Lake o' the Cherokees.
Since commissioning, the structure and facilities have undergone maintenance cycles and modernization projects including generator refurbishments and spillway upgrades contracted through companies with experience on projects for agencies such as the U.S. Army Corps of Engineers and the Tennessee Valley Authority. Past incidents have required coordinated emergency responses by Tulsa County, Oklahoma officials, the United States Army Corps of Engineers Tulsa District, and state regulators; adaptation measures have paralleled post-event retrofits implemented after notable dam incidents like those at Teton Dam and policy changes at federal levels. Ongoing monitoring employs instrumentation and inspection protocols recommended by the Federal Energy Regulatory Commission and the American Society of Civil Engineers to ensure operational safety and performance.
Category:Dams in Oklahoma Category:Hydroelectric power stations in Oklahoma Category:United States Army Corps of Engineers dams