wellllll its Beautiful, but definitely better with as much water as you can get. I would totally consider it for a kayak self support at this level, but there are lots of sandbars down by cochiti that can make it not so fun in a raft. although its been a long time since i've been in there....
so its basically 30 miles of flat class I/II with two decent, or at high water, solid rapids in the middle....
Water canyon and Ancho.(III/ IV at highwater.) (I have only done it once,at least 10 years ago.) allegedly they get monstrous at 10k+ (....1995 on a friends wedding float-13k cfs, and drunken carnage ensued. probably easily avoidable....lol) I do remember water canyon has a huge boulder that you have to run right of, and Ancho was like a large smiley wave/hole on the left. if i recall it may have been decent for a playboat if you wanted to drag one down on a float. both easy to avoid. there is beautiful geology in there, and no one around in the middle- its totally isolated.
In the bottom third there is Frijoles canyon trail to either hike a duckies out, or to hike up and check out Bandelier national monument- Anasazi ruins (absolutely gorgeous spot) and plenty of camping and maybe even a spring of some sort. there is a whole lot of basalt cliffs right on the river that have some amazing trad climbing potential. but that maybe into Cochiti Pueblo land. i seem to remember thinking a raft supported climbing float would be awesome. the bottom can get windy and crappy, with the sandbars and all, and the paddle across the lake can be pretty epic. i think it at least 3, maybe even 6 miles from the canyon mouth, around to the east (river left side of the lake) to the boat ramp.
My rafting co does one trip annually down with a college geology class, and the boss had some guy come tow us with his boat to the ramp. It made the end much easier. the higher the water the further the lake goes into the canyon. Other commercial outfitters offer a one day trip in duckies, and hike out at frijoles instead of dealing with the lake.
I think the consensus is its not a classic, but it could really be a nice float if you dialed it right, with the weather and flows,and took your time. Its really is a special place, with powerful indigenous roots. (Bandelier, Cochiti pueblo, Santa Domingo Pueblo And Diablo Canyon all have their own stories and atmosphere.) If you see it closer to 2-3000cfs, it should be cake. (minus the lake.)
I did it with a stern mounted Dib, and a six load, in one day, so it was pretty grueling. I would like to use it as a first time kayak self support mission (pending the correct gear.)
And if you climb as well, white rock over look, Diablo Canyon, Cochiti Mesa, and many other classic spots are right in the vicinity...
The put-in is officially supposed to be at Otowi bridge off of NM 503 (the road to Los Alamos from Pojoaque. ) at the Rio grande crossing.
You can put in at the end of Buckman Road past Diablo Canyon west of Santa Fe, but I wouldnt leave a car at either location. (the future site of the Santa Fe whitewater park that I have been daydreaming about for years...lol) but that is not a proper commercial put-in.
The takeout is the Boat Ramp at Cochiti Dam, off I-25 between Santa Fe And ABQ.It is safe to leave vehicles there, as safe as it is anywhere in NM, which is always questionable. I dont know about overnight tho.
Hope this helps...
you're welcome to PM me if you have other questions.
I would also consider car camping on the day section of the chama and running laps on that. it can be bike shuttled. its decent at 400cfs.(class II/III-ish... but beautiful) or camping in pilar and lapping the racecourse. it also still goes at 400 in kayaks. (or 10-12'rafts). although not too exciting, theres lots of splats and channels to sternsquirt and roll and the waters nice...we run it all summer at >400 on low water years...lookin' like this year as well prolly... :/