Google fly fishing on the Gila River and the Rio Penasco. You'll find some articles on my blog, UPSTREAM that are less than 18 months old. The Penasco is a spring creek with some run-off from the mountains up around Cloudcroft in the Spring. There is a bit of public access from the Lincoln National Forest, but not much. Most of it is private. The Mulcock Ranch has the good fishing on the Penasco. That'll cover the scoop on trout fishing in southern NM worth traveling for.

There is good warm water fishing on down the Gila as indicated above. Do your homework! The Gila is serious roadless wilderness country from 12 miles below that bridge on up. Below that it is still pretty remote and extremely rugged national forest. Runoff is usually over sometime in early to mid-May.

We're getting a lot of snow above 6k feet in southern NM this winter.