This 164-square mile watershed contains the Crawfish River above the dam at Columbus and the entire North Branch of the Crawfish River. The communities of Columbus, Fall River and Doylestown are also within its boundaries.
Soil erosion is known problem in the watershed.
Recent reconnaissance and monitoring of streams in the watershed revealed significant polluted runoff impacts. There has been extensive ditching in many of the upper reaches of streams and severe sedimentation problems. Municipal wastewater dischargers in this watershed are the village of Fall River and the Wisconsin Academy located between Columbus and Fall River. Babcock Creek Babcock Creek is a tributary to the North Branch of Crawfish River above Lazy Lake. Additional monitoring is needed to fully assess the biological potential of the stream.