Bishop Creek Canyon Dams Seeing Peak Flows

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Dams in Bishop Creek Canyon are now at or near capacity but are effectively accommodating  peak runoff as designed, according to Southern California Edison Government Relations  Manager Matthew Paruolo.

Concerns arose recently about the reservoir levels amid soaring summer temperatures,  however the flows are not expected to pose significant dam safety risks.

“SCE dams are inspected regularly per state and federal guidelines and are able to handle the  currently projected volume of seasonal runoff,” Paruolo stated Wednesday. “SCE does not  believe these flows pose significant dam safety risks and does not anticipate activating FERC  (Federal Energy Regulatory Commission) Emergency Action Plans for ‘High Flow Events’” at  either the South Lake or Sabrina dams.

Current dam levels and flows should remain high as the recent excessive heat melts the rest of  the epic Sierra snowpack still lingering at upper elevations. Bishop Creek Canyon, like other critical water, electrical, and transportation infrastructure throughout the Eastern Sierra, was  spared from severe impacts by the relatively mild spring. The slow melt gave SCE time to make  room for the higher flows expected later in the summer.

“While these reservoirs are currently operating at or near capacity as designed, SCE has  effectively reduced downstream impacts by passing the bulk of spring runoff through its  reservoirs and hydroelectric generating facilities and ‘absorbing’ peak flows caused by  persistently high summer temperatures and the rapid release of upper elevation snowpack,”  Paruolo noted.

Recreating downstream of dams presents certain hazards. Water levels can change without  notice and create treacherous currents. Anyone recreating in the canyon is still advised to avoid the swift water – including staying a safe distance from creekbanks that might be slippery and  unstable.

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