Pilot Project Alternatives FRANKS TRACT San Joaquin River False River Old R i v e r Sacramento River Operable Gates in Three Mile Slough Alt #1 Operable Gates in Old River Operable Gates in Holland Cut Operable Gates in False River Operable Gates in Sand Mound Slough San Joaquin River Operable Gates in False River Alt #2 Alt #3 Alt #2 Alt #4 Three Mile Sl.

FRANKS TRACT San Joaquin River False River Old R i v e r Sacramento River Alt #1 San Joaquin River Operable Gates in False River Three Mile Sl. Operation Scenarios Closed 20% Open Open/Close West False River Alternative

Base False River Restriction – 20% Open False River Gate – Open/Close Operation False River Gate – Closed Year Tidally Averaged EC SWP

Year Tidally Averaged EC CVP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Rock Slough Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate Three Mile Slough Gate

Year 2002 – 14-Day Average EC Sacrament Emmaton Base False River Gate Three Mile Slough Gate

West False River, Tidally Average EC, Sept 1, 2002 Base Open/Close Gate Closed 20% Open

Year Tidally Averaged EC SWP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CVP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Rock Slough Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC SWP Base False River Gate Three Mile Slough Gate The TMS Gate diversions were able to further reduce EC at the Clifton Court intake in December 2001, a time when SWP export flows were increased.

Year 2001 – 14-Day Average EC Sacrament Emmaton Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC SWP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CVP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate Three Mile Slough Gate

Year 1994 – 14-Day Average EC Sacrament Emmaton Base False River Gate Three Mile Slough Gate

Three Mile Slough Gate and West False River Gate 1992 Simulations West False River gate operation begins May 1, About the time when EC for the SJR near Jersey Point begins to rise above Franks Tract EC FRG operation ends Dec 7, 1992 when central Delta begins to be flushed with fresher water from the Mokelume system. (Dont want the gate to impede the flushing of the central Delta) TMS gate was not operated. There was not the opportunity to balance the Emmaton and Jersey Point flows (net flow for the SJR at Jersey Point most always greater than the net flow for the Sacrameto R. at Emmaton).

Three Mile Slough Gate and West False River Gate 1992 Simulations The West False River gate raises EC at Emmaton a slight amount. Historically the DCC was closed a few times in late May and early June 1992 to meet Emmaton standards. The DCC may require some additional closure with the FRG operation to maintain the Emmaton EC.

Year Tidally Averaged EC SWP Base False River Gate

Year Tidally Averaged EC CVP Base False River Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate

Year Tidally Averaged EC CCWD at Rock Slough Base False River Gate

Year 1992 – 14-Day Average EC Sacrament Emmaton Base False River Gate

Year Tidally Averaged EC SWP Base Three Mile Slough Gate – 1000 cfs diversion False River Gate – 20 % Open

FRANKS TRACT San Joaquin River False River Old R i v e r Sacramento River Operable Gates in False River Operable Gates in Sand Mound Slough San Joaquin River Alt #2 Three Mile Sl. Operation Scenarios 1.Closed 2.False River Gate Open on Ebb Tide East Levee + 2 Gates Alternative

2002 Tidally Averaged EC SWP Base East Levee – Open on Ebb East Levee – Closed

BaseClosed Open on Ebb East Levee + 2 Gates, Tidally Average EC, Sept 1, 2002

FRANKS TRACT San Joaquin River False River Old R i v e r Sacramento River Operable Gates in Old River Operable Gates in Holland Cut San Joaquin River Alt #3 Three Mile Sl. Operation Scenario 1.Closed 2.Open Gates on Holland Cut during Ebb Tides COX: Holland Cut + Old River Gate Alternative

2002 Tidally Averaged EC SWP Base Cox Alternative – Open on Ebb Cox Alternative – Closed

BaseClosed Open on Ebb COX, Tidally Average EC, Sept 1, 2002

Three Miles Slough Alternative FRANKS TRACT San Joaquin River False River Old R i v e r Sacramento River Operable Gates in Three Mile Slough San Joaquin River Three Mile Sl. Operation: Close during Portion of Ebb Tide

Three Mile Slough Gate Variable Diversion for 2002 (daily average diversion in cfs from Sacramento to San-Joaquin) June1500 July3000 August3000 September September October October November November December December

Three Mile Slough Gate Closure CLOSED OPEN CLOSED OPEN CLOSED OPEN hrs

Base False River Gate Three Mile Slough Gate One Gate Open DCC Operation One Gate Open 2002 Tidally Averaged EC SWP Period of Operation Both Gates Open

Year Tidally Averaged EC CVP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Rock Slough Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate Three Mile Slough Gate

Year 2002 – 14-Day Average EC Sacrament Emmaton Base False River Gate Three Mile Slough Gate

Three Mile Slough Gate Tidally Average EC Sept 1, 2002 Base Three Mile Slough Gate

Three Mile Slough Gate Variable Diversion for 2001 (daily average diversion from Sacramento to San-Joaquin)

Year Tidally Averaged EC SWP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CVP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Rock Slough Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC SWP Base False River Gate Three Mile Slough Gate The TMS Gate diversions were able to further reduce EC at the Clifton Court intake in December 2001, a time when SWP export flows were increased.

Year 2001 – 14-Day Average EC Sacrament Emmaton Base False River Gate Three Mile Slough Gate

Three Mile Slough Gate Variable Diversion for 1994 (daily average diversion from Sacramento to San-Joaquin)

Year Tidally Averaged EC SWP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CVP Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Old River Base False River Gate Three Mile Slough Gate

Year Tidally Averaged EC CCWD at Victoria Canal Base False River Gate Three Mile Slough Gate

Year 1994 – 14-Day Average EC Sacrament Emmaton Base False River Gate Three Mile Slough Gate

Year 1991 (Critical)-Tidally Averaged EC, SWP Base Three Mile Slough Gate – 1000 cfs diversion False River Gate – 20 % Open

Operate Three Mile Slough Gate in Lieu of Delta Cross Channel Gates

DCC Closed Three Mile Slough Gate Diversion for 2002 (daily average diversion from Sacramento to San-Joaquin)

Year Tidally Averaged EC SWP Base DCC Closed TMS Gate and DCC Closed

Year Tidally Averaged EC CVP Base DCC Closed TMS Gate and DCC Closed

Year Tidally Averaged EC Old River at Bacon Island Base DCC Closed TMS Gate and DCC Closed

Year Tidally Averaged EC CCWD at Old River Base DCC Closed TMS Gate and DCC Closed

Year Tidally Averaged EC CCWD at Victoria Canal Base DCC Closed TMS Gate and DCC Closed

Year Tidally Averaged EC CCWD at Rock Slough Base DCC Closed TMS Gate and DCC Closed

Preliminary Result Water Quality Benefits during drought

Three Mile Gate During Drought Period Base-OCAP 3 Mile Gate Operated