Streamflow trends over the past year at Pend Oreille River Below Box Canyon Near Ione in an interactive calendar format. View seasonal patterns on the river and see how an evolving climate has affecting streamflow levels over the past year. Click on any day to see what the streamflow was for that day, or sign up for a free account to view data for the past 123,880 days. The streamflow average over the past 10 days was 26560.0 ^cfs, with a day to day variation of about 5.2^kcfs.