ILSA CHANG, HOST: It's been a year since huge floods on the Yellowstone River wiped out roads in and around Yellowstone National Park. Those floods upended the lives of people who live downstream. Many are worried about what those floods meant for the river's world-famous trout fishery. It's a big part of the local economy. Yellowstone Public Radio's Olivia Weitz visited the river with a fishing guide and has this report.