Streamflow trends over the past year at Grand River Ditch At La Poudre Pass 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 66,715 days. The streamflow average over the past 10 days was 23.98 ^cfs, with a day to day variation of about 4.6^cfs.