AirEms This is from Dinosaur NM website:
"boaters can file only one application, but they may choose up to four possible launch date/river choices on the application. The Yampa and Green rivers are combined in one drawing system"
To me that confirms the choices provided by the rec.gov site ie you can fill your choices with different dates and river choices.
Originally Posted by AirEms
But in all of the years of applying it was made very clear that you can only apply to launch on one or the other and you had to pick which one and you could not mix both. If this is not the case it would be news to me and I've been doing it all wrong all these years. If there is somebody with more info on this we would all love to hear the news!