The model run results cover the period May 1 through May 21, and are based on the following assumptions:

Common Assumptions

1. CCFB Gates are operating to Priority 1 throughout the forecast period.
2. The Delta Cross Channel gates are closed throughout the forecast period.
3.  Suisun Marsh salinity control flashboards are currently in place but are scheduled to be removed on May 8, 2018, and the three Suisun Marsh Salinity Control Gates are in open position throughout the forecast period. 
4. The Middle River ag. Barrier was installed on March 14, 2018 with all 6-culvert flap-gates tied open.
5. The Old River at Tracy ag. barrier was installed on April 2, 2018 with all 9 flap-gates tied open. 
6. The Grant Line Canal ag. barrier was partially installed on April 18, 2018 with all 6-culvert flap-gates tied open.
7.  The Spring Head of Old River barrier was scheduled to be installed by March 31, 2018 however due to high San Joaquin River flow will not be installed this year.
8.  San Joaquin River flow at Vernalis is at 4,598 cfs at the beginning of the forecast period and is estimated to be at 4,100 cfs by the end of the forecast period.
9. San Joaquin River EC at Vernalis is at 210 umhos/cm at the beginning of the forecast period and is estimated to be at 260 umhos/cm at the end of the forecast period.
10.  Sacramento River flow at Freeport is at 12,238 cfs at the beginning of the forecast period and is expected to decrease to 9,750 cfs by the end of the forecast period.
11. CCFB is at 1,171 cfs at the beginning of the forecast period and is expected to decrease to 500 cfs by the end of the forecast period. 
12. Export at Jones Pumping Plant is at 986 cfs at the beginning of the forecast period and is expected to be at 1,000 cfs throughout the forecast period.