Putah Creek is just one hour from the Bay Area. Fishing is fair. This is big fish time of year. Use 7 to 9 wt rods with medium sink shooting heads and dark streamers on a slow retrieve. Good areas have been Warrior Point, the Nets, and Howard Bay.
Fishing is spotty, the steelhead run is about over.
Try Wolher Bridge and Cassini's Ranch, and the mouth of Dry Creek. Use type II shooting heads with dark steelhead patterns or streamers. A couple of shad are rumored to be in the system, look for their numbers to improve in coming weeks. Fishing is fair, and improving. The spring caddis hatch is in full swing.