I am not an expert on the Delta.(It is a true Delta) It is a very large fishery. You see as many bank fishermen(women) as you do boats. It can be busy on weekends. If you cannot find a striper or salmon to catch try the Cat Fish. It is not uncommon for people to get lost in the maze of waterways in the Delta. Get a map(s). Years ago I bought a fishermen's map book for the Delta.
At a minimum have a compass on board your boat if using a boat. Now days I use my gps, but I still have a compass on board. There are alot of bait shops were you can get local information. A cellphone, CB, or marine radio are good items to have. I lack the Marine radio. Do not tie-up in the ship channel they will run over you. There are hundreds of miles of water that does not have ship traffic.
Caution: The wind is a major factor when boating in the Delta. That is why there are large wind farms for electrical generation on the Northside of the Delta. Check the weather and if winds over 15 MPH are predicted pick another day, or fish from shore. Safety has to be a major consideration. They are recovering bodies all the time. Drivers going in, fishermen falling over board and other causes. My wife's Uncle died from a heart attack after catching a big sturgeon in the Delta. By the time they got him to shore it was to late. Not a bad way of going. Much better then spending ten years in an old folks home pissing in a plastic bag.
Try the following link for Delta Information
http://www.californiadelta.org/I practice catch and release in the Delta. There is an adversory against eating the fish because of mercury. I need all the brain cells I have left. :-D
Siskiyou