Action agency responses to Current Year SORS



SOR # Response
2010-3 USFWS
Implemented
This SOR asked Bonneville Powerhouse Two units to be operated at the low to mid range of peak efficiency and spill any remaining water as long as flows and debris were causing problems with keeping screens cleaned. This SOR was implemented as requested.
2010-1 USFWS
Implemented
This SOR asked for a Tier 2 Sturgeon Operation as defined in the 2006 USFWS Biological Opinion. This SOR did specify that the extra 260 Kaf of water stored in Libby in 2010 for the spill test not be counted as sturgeon release water. This SOR was implemented as requested and the 260 Kaf was released above the sturgeon releases.
2010-02
Implemented
This SOR asked for Dworshak outflows to be increased to full powerhouse for a period of three days during the week of May 17, 2010 to increase flows during the anticipated peak of the hydrograph. This SOR was implemented as outflows were increased to full powerhouse at Dworshak from May 19-21, 2010.
2010-01
Partially Implemented
This SOR asked for the COE to implement an instantaneous spill level of 75 Kcfs (with a minimum of 50 Kcfs spill) over the low flow start of the 2010 spill period at BON Dam. The SOR asked that JDA and BON pools be used to help provide this spill as well as possibly closing the Ice Trash Sluice at BON and the BON Zero Unit. This SOR was partially implemented as a minimum spill level of 50 Kcfs was established but the COE did not meet an instantaneous spill level of 75 Kcfs during the low flow start of the 2010 spill season. Additionally, the COE did not use either the JDA or BON Pools to meet this spill level and also did not close the Ice Trash Sluice or Zero Unit at BON.


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Page last updated on: April 26, 2011

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