Rio Chama flows depend on El Vado dam release and no one knows what they will be or if they do, it is not easily published is my observation. Check with the BLM in Taos Office for best guess.
Was just out there on Rio Chama May 23,24, 25. One hardshell kayak, two IK kayaks and one 13 ft NRS for heavy gear with just the oarsman no passengers. Expected to get cancelled, but out of the blue, a 900 cfs release happened. Which is about perfect for floating.
One of my raft buds was out there and did from the Dam to Chavez Access last year at around or maybe a bit less than 400 cfs in a 13 ft NRS raft. Said he would never do it again at that level. BLM Taos Office recommended 600 cfs to us for rafts a bit less for IK and kayaks. I believe 600 is a great cutoff and have done it in rafts at that level and felt it was a neat scenic run but would not vote yes on even 600 for a fun run as I remember a lot of shoals that we got over but more rubbing on my raft bottom than I like.
Lots of opinions here and most are good. My advice is check with the Taos NM BLM office and ask them. If at or below 600 cfs, think about it and if you go cut down to a very light boat and put normal raft riders in IK or kayaks to lighten the load on the gear boats.
Rio Chama is one of my favorite little western river runs. Highly recommended.