Lower Sac, Upper Sac and Pit have been excellent options and where we've been spending majority of our time the past few weeks. The vast majority of our trips are being rescheduled due to the COVID-19 craziness but there is some great fishing to be had with very few folks out on the rivers.
Lower Sac: Great trout fishing right now. PMD, Baetis, and March Brown hatches have been heavy the past few weeks. We've had some great windows to throw the dry fly to big sippers during some of these hatches as well. Primarily a nymph game but the these dry fly windows are an absolute blast when they happen. Weather patterns look good and fishing should remain the same.
Upper Sac: Midges, Baetis and Stoneflies have been catching fish.. some very nice fish that have moved up from the lake are around along with plenty of smaller fish. Primarily a subsurface game until April/May when the big stoneflies start flying. Great walk/wade option right now.
Pit: Has been fantastic. The trout haven't been discriminating much on the food they want. Stoneflies, caddis and general attractors will catch fish here right now. Great option especially with the weather beginning to warm up. Awesome place to tight-line nymph and not run into many other anglers.