: Yellowstone Rivers: The Forest Service is closing the Ashton-Flagg Ranch Road in late September through October in order for heavy equipment to perform some upgrades. More details on the closure can be obtained from the Caribou-Targhee National Forest web site. We place this announcement here because the road provides access for fishing waters in the south side of Fall River Basin within and outside the Park. Access to Grassy Lake Reservoir and the Beula Lake trail head will be available from the east end of the road at Flagg Ranch Resort. Speaking of Beula Lake, now that the nearby scout camp is closed for the season, your chance for solitude while fishing there is a lot better.