The Sacramento-San Joaquin Delta waterways entire system from Freeport to Suisun Bay is high, cold, and muddy with loads of grass and floating debris.  In looking at the Delta’s condition it will take time for the system to be fishable.  Your best bet presently is spend your time targeting sturgeon.  For your information Montezuma Slough has been very good as of late for sturgeon.  Good numbers of target length diamondbacks have been hooked and landed this past week.   Mike Pipkins of Gotcha Bait in Antioch said one of his customers bought 4 dozen ghost shrimp and he headed into Montezuma Slough where they hooked and landed 11 slot limit sturgeon.  The best baits continue to be salmon roe and ghost shrimp.