Photo: Before and after the September 2013 flood

Pre- and post-flood aerial images of a flooded section of the St. Vrain River, north of Lyons, Colo. In the photo on the right, the channel is deeper and wider, and a large amount of sediment and debris has been deposited throughout the valley.  The channel itself relocated and can now be seen flowing around the north side of the house near the center of the image; it used to flow around the south side.