San Joaquin River Delta is located near Bethel Island, CA. The trail is primarily used for fishing and is accessible from October until December.
I am not sure if this review is for the right area. We stayed the weekend at a house along the Delta (Middle River). We spent a lot of time kayaking around the rivers - it was wonderful. Lots of fishing in the area, as well as speed boats. We were able to Kayak to a beach and spent time there enjoying the sun. Great spot!