Muddy Creek near Kremmling, Colorado, is a regulated, meandering, gravel-bed stream that has been monitored for geo-morphic change since 2001. One reach of the creek was reconfig-ured using “natural-channel design” methods in 2003, providing an opportunity to compare hydraulics in this reach with those in a nearby, unaltered control reach. Streamflow in Muddy Creek has been regulated by Wolford Mountain Reservoir since 1995, but reservoir releases in 2006 and 2008 resulted in out-of-bank floods. The Muddy Creek monitoring program was conducted by the U.S. Geological Survey from 2001 to 2008 in coopera-tion with the Colorado River Water Conservation District, and the streamflow modeling and analysis were conducted in 2008 in cooperation with the Colorado River Water Conservation District and the Colorado Water Conservation Board.