“Historic Changes to River Systems in the Driftless Area” is the title of the FREE December Conservation on Tap presentation by Valley Stewardship Network! Driftless Area streams have experienced a tremendous amount of change due to human activities over the past two centuries. Find out  how European-American settlement and associated landcover change in the mid-19th century disrupted rainfall-runoff processes on the landscape, resulting in more frequent floods and altered stream channels.  Join us Tuesday, December 5th, at 7:00 pm at The Historic Fortney located at 100 N. Main St., in Viroqua, WI.  Info:  valleystewardshipnetwork.org, [email protected].