Although we go to Alaska every 2 years I do not stay in their state parks. I have driven through a few and they did not have power, sewer or water hookups. Water was available either from a portable tank or a tap at the dump station. In addition, the spots I saw were short and narrow and not suitable for a 40' rig or bigger. We had the same experience at Yukon and BC parks we visited. I remember one BC park we stopped in and they wanted $30 a night for dry camping, the dump station was broken and a sign on the water said it was shut down because it was polluted. Needless to say, we don't even try stay in Yukon or BC parks. Too many wide spots in the road, rest areas and parking areas to worry about the parks.