So much for that plan to open a portion of the South Fork Boise River.
The email message from the Boise National Forest’s Mountain Home Ranger District:
Guys, due to the mudslides and ongoing instability of the area, the SF Boise River will NOT open as discussed at the TU meeting Wednesday. The area will remain closed until further notice. As of now all access roads to the SF are closed. Again the area is closed to everyone except Federal, State or County personnel in performance of official duty.
The rain gage at Anderson Ranch Dam recorded more than 0.6 inches of precipitation on Thursday evening September 12. This piece of data portended the mudslides, gullywashers and mass failures that have inundated the South Fork Boise road and reached the river in many locations. For example the photo below from KTVB.com shows a big mudslide.
News coverage with some photos can be found at the Idaho Statesman and at KTVB websites. There is also a very good overview news release from the Boise National Forest here.