Looking for a whole different point of view" Float or boat the Upper Mon Water Trail, the first water trail for recreational boaters in West Virginia. This upper section of the Monongahela River is about 65 miles long. It starts in Fairmont, WV and flows north to Ten Mile Creek, just downstream of Rice's Landing, Pennsylvania. To request your free copy of The Upper Mon Water Trail brochure, contact The Greater Morgantown CVB at 1-800-458-7373.