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Ajay Goyal Department of Water Resources August 9, 2007
Franks Tract Project Ajay Goyal Department of Water Resources August 9, 2007
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Project Objective To improve the water quality of export water and possibly benefit fisheries
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Franks Tract Project - Alternatives
Three Mile Slough West False River
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West False River Alternative
Sacramento River Three Mile Sl. San Joaquin River Operable Gates Old R i v e r False River FRANKS TRACT San Joaquin River
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Three Miles Slough Alternative
Operable Gates Sacramento River San Joaquin River Three Mile Sl. Old R i v e r False River FRANKS TRACT San Joaquin River
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Three Miles Slough Alternative
Sacramento River Three Mile Sl. San Joaquin River FLOOD TIDE Old R i v e r False River FRANKS TRACT San Joaquin River
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Three Miles Slough Alternative
Sacramento River Three Mile Sl. San Joaquin River EBB TIDE Old R i v e r False River FRANKS TRACT San Joaquin River
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Three Miles Slough Alternative
Sacramento River Three Mile Sl. San Joaquin River NET FLOW Old R i v e r False River FRANKS TRACT San Joaquin River
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Three Miles Slough Alternative
Sacramento River Three Mile Sl. San Joaquin River NET FLOW EXPORTS FLOWS Old R i v e r False River FRANKS TRACT San Joaquin River
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Three Miles Slough Alternative
Sacramento River Three Mile Sl. San Joaquin River Close on EBB Tide Old R i v e r False River FRANKS TRACT San Joaquin River
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Obermeyer Gates
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Obermeyer Gate - Cross Section
GATE PANEL IN RAISED POSITION GATE PANEL IN LOWERED POSITION
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Three Mile Slough - CLOSED During Portion of Ebb Tide
Base Condition
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Three Mile Slough- CLOSED
Base Condition Three Mile Slough- CLOSED
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Net Daily Average Flow Diversion = 3000 cfs for July
Particle Tracking Summary June Particles Released - Near Rio Vista CVP - Base SWP - Base CVP - TMS Gate Closed SWP - TMS Gate Closed Net Daily Average Flow Diversion = 3000 cfs for July
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Possible Operations of Three Mile Slough Gate
Closed during portion of ebb tide Benefit Fisheries Improve WQ Can be used in lieu of DCC gates Complete closure for some time Degrade WQ Closed on Portion of Flood Tide ???
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Important Points Strategically located between Sacramento River and San Joaquin River Capability to move net flows INWARD or OUTWARDS Three Mile Slough much smaller than Sacramento River Sacramento River ft wide Three Mile Slough ft wide
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Discussion Ajay Goyal
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