Latest flood recovery update can be seen here on the CliffCare site http://cliffcare.org.au/grampians/ as well as the latest road and track report. Can't cut and paste from their new format anymore so have uploaded only to CliffCare.
From PV's opening blurb _
Grampians National Park Update – 13 December 2012
Opening of Silverband and Stony Creek Roads
Thanks to the magnificent works from VicRoads, the Silverband Road was reopened on Wednesday. With this road now open, access to Stony Creek Road from Silverband is now available. However the Rosea Walking Track and the walking tracks in the Dellys Dell area will remain closed until works are completed.
Flood recovery works have been completed on many roads in the Victoria Valley, with Henham Track now open to the public.