Jerry Monkman / Researchers searching for freshwater mussels in the Ashuelot River, Keene, New Hampshire, USA, September 2006.

Jerry Monkman / View through the Coombs Covered bridge in autumn / fall. It spans the Ashuelot River (118 feet in length) Winchester, New Hampshire, USA. October 2009

Jerry Monkman / Ashuelot Covered bridge in autumn / fall. It spans the Ashuelot River (Built in 1864, and is 159-feet in length) Ashuelot, New Hampshire, USA. October 2009

Jerry Monkman / Dwarf Wedge Mussel (left), Eastern Elliptio (top), and Eastern Lampmussel (right.) found in the Ashuelot River. Keene, New Hampshire, USA, September 2006.

Jerry Monkman / Mussel researcher Ethan Nedeau holding three species of freshwater Mussels (Mytillus genus) from the Ashuelot River. Keene, New Hampshire, USA, September 2006.

Jerry Monkman / Poling canoes on the Ashuelot River, a tributary of the Connecticut River, Surry, New Hampshire, USA

Jerry Monkman / Canoe and kayak on the Ashuelot River, a tributary of the Connecticut River, Surry, New Hampshire, USA

Jerry Monkman / Poling canoe on the Ashuelot River, a tributary of the Connecticut River, Surry, New Hampshire, USA