pWashington resident Denise Nef Frehner captured video of a cliff collapsing into the Kettle River, a Columbia River tributary, in Ferry County on May 13.ppThe Columbia River tributary, which is located southeast of British Columbia, has received near record floodinga from snow melting into rivers along the US-Canada border due to recent high temperatures, according to reportsa. At least eight rivers in Ferry County are at, or above, flooding stage and water levels are expecteda to continue to rise as the week progresses.