Governor Bill Walker has declared a disaster in response to flooding that’s making the far northern end of the Dalton Highway impassable. The road used to supply the Prudhoe Bay oil field has been closed south of Deadhorse since Sunday, as an expanding area of overflow from the Sag River, and recent blizzard conditions have hampered Department of Transportation crews trying to channel water away from the highway. As KUAC’s Dan Bross reports, the disaster declaration will amp up efforts to open the road.