The Tioga River winds through the town of Blossburg, Pennsylvania. (Photo by Matt Gunther for Capital & Main.)This story was originally published by Capital & Main. When the lingering sun of late May inches along to peer down on the Tioga River — its water glistening — it does so as birds chirp overhead, as a chipmunk darts through rustling riverbed brush, and as yellow butterflies dance into the gorge. This river doesn’t roar; it trudges along …