The slides created several new rapids including one class V and another class IV. The debris creating the two larger rapids consists of large boulders and appears to be there to stay. These rapids are fast and powerful and require maneuvering. Not your typical raft run. Both lead into logs and pin hazards. Both could be portaged with some effort.
In all there are probably a half-dozen washouts. Three have changed the river. Two require scouting and class IV V skills. Pole Creek at apx. mile 11 is a large debris fan but the change to the river is slight. Buffalo Creek at about mile 12.5 is a large debris fan from the left and a long and powerful class V rapid. Just below long gulch, which is about a mile above the take-out at apx. mile 15 an unnamed gulch has poured in from the left and created a long and powerful class IV.
The log that was in Raspberry is gone or underwater.
A couple quick observations: this is no longer an easy day-float for rafting. These two rapids are formidable. With less water than 2700 cfs they will probably become more difficult; at least for rafts.
This will probably reduce the use on the South fork considerably. Fishing pressure will be reduced.
Finally, just to keep things exciting, there is a new rapid at the very end of the roadside stretch. Above the canyon put-in. We didn't see this until we were already heading downstream from the put-in. What we could see was a tall and fast wave. Tall!
Some scenic shots of the South Fork Boise
The kml and gpx maps bundle can be downloaded here on Kayak Idaho