The Pend Oreille River ( pond-ə-RAY) is a tributary of the Columbia River, approximately 130 miles (209 km) long, in northern Idaho and northeastern Washington in the United States, as well as southeastern British Columbia in Canada. In its passage through British Columbia its name is spelled Pend-d'Oreille River. It drains a scenic area of the Rocky Mountains along the U.S.-Canada border on the east side of the Columbia. The river is sometimes defined as the lower part of the Clark Fork, which rises in western Montana. The river drains an area of 66,800 square kilometres (25,792 sq mi), mostly ... Source: Wikipedia
Maximum discharge on the river today is recorded at the Pend Oreille River Below Box Canyon Near Ione with a streamflow rate of 24,300 cfs. This is also the deepest point on the Pend Oreille River, reporting a gauge stage of 88.36 ft. This river is monitored from 2 different streamgauging stations along the Pend Oreille River, the first of which is perched at an elevation of 2,035 ft, the Pend Oreille River At Newport Wa .