 It has been equally attractive to contemporary real estate developers, and to lessen environmental impacts on the stream and the Wallkill watershed as a whole the Open Space Institute and the town cooperated in 2005 to obtain a permanent agricultural easement on the Zylstra Farm, one of the largest properties along the creek.With little significant woodland in its valley, the creek can rise quickly when heavy rains fall.After the April 2007 Nor'easter, it flooded severely enough near its mouth that Route 17K had to be closed west of Montgomery for two days.