Link to GRDA’s Lake Levels Page is HERE – for the most current information available.

***Updated 3:45 pm***

Additional floodgate operations to increase discharge from Pensacola, Kerr dams…

Langley – Due to continued heavy inflows of water in the Grand River Watershed, the United States Army Corps of Engineers is directing additional floodgate operations at the Grand River Dam Authority’s Pensacola Dam (Grand Lake) and Robert S. Kerr Dam (Lake Hudson). GRDA is opening additional gates at Pensacola and this will cause the dam’s water discharge to increase to 201,000 cubic feet per second (cfs). Additional gate operations at Kerr Dam will increase discharge to 226,000 cfs.

Both Pensacola and Robert S. Kerr Dams, along with the Salina Dike, are operating as designed to meet flood control requirements along the Grand River System. GRDA personnel will be monitoring the flooding situation — as well as these facilities — round-the-clock to ensure the structures continue to operate as designed.

GRDA also continues to stay in close contact with Mayes County Emergency Management, the Federal Energy Regulatory Commission and the United States Army Corps of Engineers to keep all parties updated on the high water conditions.

Floodwater release bulletins will be updated as conditions warrant.

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Grand River Dam Authority Floodwater Release Bulletin: High volume releases from Pensacola, Kerr Dams

Langley – Due to heavy inflows into the Grand River system, the Grand River Dam Authority distributed the following public notice at 5:57AM Monday morning (Dec 28th), to residents in areas below Pensacola Dam (Grand Lake) and Robert S. Kerr Dam (Lake Hudson).  

“This is the Grand River Dam Authority.  Due to heavy inflows, it is necessary to begin releasing high volumes of water. This may or will cause flooding in areas below Pensacola and Kerr dams. This condition mandates that you monitor local water levels and prepare to evacuate. This is NOT a test. Please understand that immediate action should be taken. At this time, it is anticipated that the discharge at Pensacola Dam will be 150,000 cubic feet per second (cfs) and at Kerr Dam the release will be 180.000 cfs. Further information can be secured at GRDA’s Emergency Operation Center at (918) 256-0911. Thank you for your cooperation.”

GRDA will continue to distribute floodwater release bulletins as information is updated.

For additional information on how to sty informed during floodwater releases, click HERE.

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***Update***

At 10:30AM on Monday, December 28:
  • Grand Lake elevation was 752.96 feet. Daily target elevation for December 28 is 742 feet.
  • At the direction of the United States Army Corps of Engineers, 4 (four) main spillway gates and 9 (nine) east spillway gates were open at Pensacola Dam, discharging 115,608 cubic feet per second (cfs) of water.
  • Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,435 cfs of water through generation.
  • Releases through floodgates and generation totaled 129,043 cfs.
  • Inflows into Grand Lake totaled 214,737 cfs.
  • Lake Hudson elevation was 634.53 feet. Normal elevation is 619 feet.
  • At the direction of the United States Army Corps of Engineers, 6 (six) floodgates were open at Robert S. Kerr Dam, discharging 129,618 cfs of water.
  • Four units were online at the Robert S. Kerr Dam powerhouse, releasing 29,970 cfs of water through generation.
  • Releases through floodgates and generation totaled 159,588 cfs.
  • Inflows into Lake Hudson totaled 205,722 cfs.

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***Update***

At 9AM on Monday, December 28:

  • Grand Lake elevation was 752.47 feet. Daily target elevation for December 28 is 742 feet.
  • At the direction of the United States Army Corps of Engineers, 4 (four) main spillway gates and 7 (seven) east spillway gates were open at Pensacola Dam, discharging 101,104 cubic feet per second (cfs) of water.
  • Six (6) units were online at the Pensacola Dam powerhouse, releasing 13,402 cfs of water through generation.
  • Releases through floodgates and generation totaled 114,506 cfs.
  • Inflows into Grand Lake totaled 217,312 cfs.
  • Lake Hudson elevation was 634.39 feet. Normal elevation is 619 feet.
  • At the direction of the United States Army Corps of Engineers, 6 (six) floodgates were open at Robert S. Kerr Dam, discharging 107,720 cfs of water.
  • Four units were online at the Robert S. Kerr Dam powerhouse, releasing 31,320 cfs of water through generation.
  • Releases through floodgates and generation totaled 139,040 cfs.
  • Inflows into Lake Hudson totaled 194,106 cfs.

December 2015 Grand Lake Floodwater Release