[env-trinity] Fw: Reclamation begins flood control operations on Upper Klamath Lake
tstokely at att.net
Mon Apr 8 18:29:23 PDT 2019
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From: Lisa Navarro <lnavarro at usbr.gov>To: "tstokely at att.net" <tstokely at att.net>Sent: Monday, April 8, 2019, 5:02:19 PM PDTSubject: Reclamation begins flood control operations on Upper Klamath Lake
Media Contacts: Christie Kalkowski, 916-978-5100, ckalkowski at usbr.gov
Laura Williams, 541-880-2581, ljwilliams at usbr.gov
For Immediate Release: April 8, 2019
Reclamation begins flood control operations on Upper Klamath Lake
KLAMATH FALLS, Ore. – The Bureau of Reclamation announced the beginning of flood control operations on the Upper Klamath Lake with increased releases continuing today. The public is urged to take all necessary precautions, including avoiding high-water areas, on or near the Link or Klamath rivers (including below Keno and J.C. Boyle dams) while flows are elevated.
Increased inflows along the stretch of river from Link River Dam to Iron Gate Dam are anticipated over the next week or longer. Based on current projections, flows below Iron Gate Dam will be increasing from approximately 4,000 cubic feet per second; to at least 6,030 cubic feet per second, possibly more than 8,000 cubic feet per second.
“We are very thankful that the weather and increased inflows also created ideal conditions for this flushing flow,” said Reclamation’s Area Manager Jeff Nettleton. “We can optimize the water released to reduce disease among Klamath River salmonids while maintaining Upper Klamath Lake, within flood control levels, as well as providing for habitat and spawning needs for suckers.”
The current hydrologic conditions, including rain on snow and increased temperatures resulting in snow melt at higher elevations, make this an ideal time to accomplish the flow event as part of required flood operations. Upper Klamath Lake reached the flood control curve on April 3, which means that Reclamation must release water from Upper Klamath Lake to maintain the lake elevation at or below the prescribed flood control elevations. The high inflow to Upper Klamath Lake as well as additional inflows to the Klamath River from down-river tributaries, will also optimize the effectiveness of the flushing flow event.
The flood control releases also meet the needs of salmon in the Klamath River by providing a flushing flow as included in Reclamation’s Proposed Action that was analyzed by the National Marine Fisheries Service in their 2019 Biological Opinion (2019 BiOp). As part of the Proposed Action, a flushing flow designed to reduce the prevalence of Ceratonova shasta disease (C. shasta) in Klamath River coho salmon below Iron Gate Dam is likely to be implemented each year. The flushing flows are intended to disrupt the life cycle of C. shasta by disturbing the river bed and clearing submerged rocks of polychaetes, which are the intermediate host of C. shasta.
Because the flushing flows are explicitly provided for under the 2019 BiOp as part of the Klamath River water account (Environmental Water Account), implementation will not impact the Project irrigation supply.
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Reclamation is the largest wholesale water supplier in the United States, and the nation’s second largest producer of hydroelectric power. Its facilities also provide substantial flood control, recreation, and fish and wildlife benefits. Visit our website at http://www.usbr.gov. Follow us on Twitter @USBR and @ReclamationCVP.
Bureau of Reclamation, Mid-Pacific Region 2800 Cottage Way, Sacramento, CA 95825 United States
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