April 22 is a limited opener for a few spots, you're correct TD. The big one is the Lower Deschutes, the section that borders Warm Springs opens up on April 22. Includes popular areas like Trout Creek, Mecca Flats, etc.
Laurance Lake opened on April 22, although it is not accessible at the moment due to snow and a busted culvert that needs to be fixed before the road is traversable.
Wickiup is another, and Odell (which it looks like someone already mentioned above).