Boardman River Nature Center INTERLOCHEN PUBLIC RADIO (Interlochen Public Radio) - The Grand Traverse Conservation District is cutting the ribbon on its new Boardman River nature center. The center is a 7-thousand square foot building built along the Boardman River, on Cass Street near the Sabin Pond Trailhead. The center was built with an eye towards conservation and green building techniques. © Copyright 2009, Interlochen Public Radio