As others have mentioned 5th street waves (theres more than one) change almost daily base on the Gunnison, but between 7.5k to 10k on this gage there is almost always something to surf.
USGS Real-Time Water Data for USGS 09106150 COLO RIVER BLW GRD VALLEY DIV NR PALISADE, CO
The first, front, up river wave, or whatever you want to call it is usually the best for play, but as flows change some other moderate waves come in that are surfable.
My rule of thumb (so far) is to watch for this gauge to hit over 7,500 CFS (Could come in a bit sooner or later). The Junc(?, fitting though) wave comes in at about 10K, you will know it is up when 5th street washes out due to high water.