Flowing 581 miles (~929 km) from its headwaters located 15 miles north of McClusky in Sheridan County until it converges with the Red River at Fargo, the Sheyenne River is the longest river located within North Dakota. The river valley from Baldhill Dam at Lake Ashtabula and south to Lisbon can be as deep as 200 feet and a mile wide. Anglers can find northern pike, walleye, yellow perch, channel catfish and white bass in its lower reaches. Records indicate 53 fish species known to inhabit the Sheyenne, about twice the number of species found in other tributaries of the Red River. Two rare fish - the rosyface shiner and the pugnose shiner - and three rare mussels - the mapleleaf, black sandshell, and pigtoe clams - live in the Sheyenne. Crossings The river is crossed by several historic bridges, including the Lisbon Bridge and the Colton's Crossing Bridge in Lisbon; the West Park Bridge in Valley City; the West Antelope Bridge in Flora; the Romness Bridge near Cooperstown; and the Nesheim Bridge at McVille. In Valley City it is crossed by several more bridges, including the Hi-Line Railroad Bridge and, before demolition, the Rainbow Arch Bridge. See also List of longest rivers of the United States (by main stem) References External links Contour and boating map of Lake Ashtabula Rivers of North Dakota Bodies of water of Wells County, North Dakota Dakota toponyms Tributaries of the Red River of the North