Among other tributaries, the Crawfish River collects the North Branch Crawfish River,[3] which also rises in Columbia County and flows through the village of Fall River.
Shortly before merging the Rock and Crawfish rivers cross under Interstate 94. Both rivers flood the nearby land on an annual basis. In 2008, some lanes on I-94 were temporarily closed due to flooding from both rivers.[4]
^U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National MapArchived 2012-03-29 at the Wayback Machine, accessed May 13, 2011