The Fenwood Creek watershed drains approximately 39 square miles (24,958 acres) of land into the Big Eau Pleine (BEP) reservoir.  The Fenwood Creek represents one of three  major surface water tributaries that empty into the BEP reservoir which immediately flows into Lake DuBay, both flowages of the Wisconsin River.  The other two tributaries include the Big Eau Pleine River and Freeman Creek.  Figure 1 outlines the location of the Fenwood Creek watershed (yellow) in context to the Big Eau Pleine River watershed (blue). 
 

The Big Eau Pleine (BEP) River Watershed is located mostly in western Marathon County with smaller areas located in Clark and Taylor counties.