On the Yellowstone River near Livingston, Montana, California resident Mike Wever waded into the swiftly-moving water Friday with a fly fishing rod in one hand. Utah has not enacted fishing restrictions but wildlife officials advise anglers to fish in the mornings or evenings when temperatures are cooler. Yellowstone on Wednesday expanded afternoon fishing restrictions to the whole park. Also Wednesday, wildlife officials in neighboring Montana broadened afternoon fishing restrictions to now cover 1,200 miles (1,931 kilometers) of rivers. The consequences aren’t just ecological; trout fishing is closely entwined with the economy in many Rocky Mountain communities.