1935: the authority before the dam
Oklahoma created GRDA through Senate Bill 395 in April 1935. Cherokee advocate Henry Holderman had promoted the Grand River project for years. The first nine-member board was chaired by J. Howard Langley; W. R. Holway became chief engineer. The agency’s original mission combined conservation, reclamation, waterpower and flood control—not just recreation. [1]
Federal PWA financing made construction possible. GRDA’s 2023 construction history describes the financing split as 45 percent grants and 55 percent loans. Calling the entire project “WPA-built” confuses two different New Deal agencies. [2]
Electricity, then a wider river system
Pensacola was Oklahoma’s first hydroelectric facility. GRDA’s dam profile lists six generating units with about 120 megawatts of combined capacity. That is capacity, not a promise the plant generates at that output every hour. [3]
Downstream, GRDA broke ground for Robert S. Kerr Dam on January 2, 1962, and marked completion on October 17, 1964. It added 114 megawatts and created Lake Hudson. This is the Kerr Dam on the Grand River—not the Corps’ Robert S. Kerr reservoir on the Arkansas River. [4]
GRDA also operates the Salina Pumped Storage Project and manages W. R. Holway Reservoir. Its hydropower operations are part of a broader public-power utility; the 2024 brochure describes the agency as self-supporting through electric and water sales rather than taxes. [5][6]
Who directs flood releases?
GRDA owns and operates Pensacola, while the U.S. Army Corps of Engineers directs flood-control releases when the reservoir is above, or projected to exceed, 745 feet Pensacola Datum. Reservoirs downstream and the wider Arkansas River system matter to release decisions. This is more complicated than a single operator deciding whether to “open the gates.” [5][7]
That operating division does not, by itself, settle legal responsibility for flooding or the property rights needed for project operations. Those questions are at the heart of Miami’s dispute.
Miami: backwater, property rights and a long dispute
The Neosho and Spring feed the Grand River system. Miami has experienced repeated flooding on the Neosho and its tributaries, including Tar Creek. The 2007 event alone led to about 2,500 evacuations and inundated 574 structures, according to NWS. [5][8]
The city argues that the Pensacola Project increases flooding and that GRDA must acquire adequate flowage rights over affected property. GRDA disputed responsibility and pointed to the Corps’ flood-control role and limits in federal law. The published 2022 court opinion records both the controversy and earlier Oklahoma compensation litigation. It is important to separate a party’s argument, an agency finding and a court’s actual holding. [9]
Three dated steps—not one final verdict
- January 18, 2022: the D.C. Circuit granted Miami’s petitions and sent the matter back to FERC. It required analysis of flood evidence, the Corps’ role, GRDA’s obligations and the Pensacola Act. This was a remand, not an award of flood damages. [9]
- 2024 agency action: FERC’s official case summary describes its remand finding that the project increased flooding around Miami and that GRDA must acquire adequate property rights for project purposes, including flood control. It identifies GRDA’s subsequent challenge as D.C. Circuit No. 24-1071 and related cases. We have not verified a final appellate disposition from that summary. [10]
- October 30, 2026: FERC published a revised relicensing schedule for the application filed May 30, 2023. Comments on the draft contaminated-sediment transport report are due December 2, 2026; the final report target is January 31, 2027, with an environmental-analysis notice targeted for March 17, 2027. These are procedural targets, not a newly granted license. [11]
Status checked November 10, 2026. The relicensing study track and the property-rights litigation are related but different proceedings. This summary does not predict their outcome or assign every flood to one cause.
Permits, police and everyday lake management
GRDA’s role also includes lake safety, shoreline management and permits. Its FAQ says every floating structure must be permitted; a new owner must transfer an existing private dock permit. The GRDA taking line is a surveyed property boundary—not simply an elevation. Flowage easements are separate property rights, with terms recorded in the property abstract. [7]
GRDA police provide water-safety guidance and patrol services; the 2023 retrospective records their public boating-safety work. None of that supplies a current lakewide dock count. Docks, slips, structures and permits are not interchangeable statistics. [12][7]