Check out "Backcountry Skiing Berthoud Pass
" by Jordan Lipp. I believe it's out of print but you can find used copies here and there. It might still be available at REI if there is still a print copy going around. It basically covers the old ski area and Current Creek.
Doug Scott also does Topo maps
with known avalanche paths at Berthoud overlayed on it. Most of these paths are also ski runs.
A lot of the other drainages are learned by getting out with locals or exploring on your own. There are several runs in 2nd, 1st, and 0 creek that I have no idea what their names are.