A classification of stream types at reference reach USGS gage stations in Michigan.

摘要

In order to have a better understanding of the geomorphic characterization and description of Michigan rivers, 43 stable reference reach rivers with established U.S. Geological Survey gage stations were surveyed to determine stream types using the Level II Rosgen Classification System. Geomorphic field measurements of floodprone width, bankfull width, bankfull mean depth, bankfull maximum depth, sinuosity, slope, and median channel material were taken at reference reach locations to determine the Rosgen Classification System stream type. Out of the 43 sites surveyed, 39 were classified as a "C" stream type that are indicative of streams that are slightly entrenched (>2.2), have a moderate to high width to depth ratio (>12), have moderate to high sinuosity (>1.2), and have a slope less than 2% with a well-developed floodplain in narrow to wide valleys. We now have a better understanding of what stream types occur in Michigan at USGS gage locations and have site specific geomorphic information that can be used as a communication, monitoring, and research tool amongst various disciplines that manage, research, monitor, and rehabilitate rivers.