Fly Fishing and RV Parks - Where in the Southwest?

Looking to get into fly fishing. Long time salt water angler. Now I really want to learn and get into the art of fly fishing!

With that said, I want to take trips with my DW, and two DS (13) and (18).

Wife/Kids don't like fishing too much, but they do like exploring towns, villages, hiking, campfires, etc.

Would love to find places near rivers/streams that provide full hook ups and great FF within reasonable a driving distance.

For now, places in....CA, NM, AZ, and NV to start with.

Later.....Montana!!!

Thanks!