This is a great run. The river goes through a nice canyon and there are no roads or river access for much of it. There are many huge boulders in the river channel and some great play along the way. There is a tricky putin in the town of La Puente but I recommend putting in at the NM 95 bridge as there is better parking and less chance of trouble in a _very_ tiny town..... The takeout is at a boat launch on the north end of El Vado Reservoir and comes after a _long_ flatwater paddle out. I would recommend taking out at a fishing access point (under the footbridge) and following a steep but relatively short path up the canyon wall. This take out is just upstream of the Heron Reservoir Dam. You really don't miss much from the alternate takeout to the "official" one, except some boring flatwater.
The shuttle route is rather strange. You start on one side of the river and make a U-turn over it and come down on the other side to reach the takeout. For information, see _New Mexico Whitewater_, by NM State Parks, & _Rivers of the SW_, by Fletcher Anderson. For more beta, check out
Boating Waters, by NM State Parks.