The St. Joseph River (known locally as the St. Joe) is a tributary of Lake Michigan with a length of . The river flows in a generally westerly direction through southern Michigan and northern Indiana, United States, to its terminus on the southeast shore of the lake. It drains a primarily rural farming area in the watershed of Lake Michigan. It was enormously important to Native Americans and greatly aided in the colonial exploration, settlement and administration of New France and the nascent United States as a canoe route between Lake Michigan and the watershed of the Mississippi River. Description of the watershed The St. Joseph River watershed drains from 15 counties: Berrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo, St. Joseph and Van Buren in Michigan and De Kalb, Elkhart, Kosciusko, LaGrange, Noble, St. Joseph and Steuben in Indiana. The watershed includes 3,742 river miles (6,022 km) and flows through and near the Kalamazoo-Portage, Elkhart-Goshen, Mishawaka-South Bend, and St. Joseph/Benton Harbor metropolitan areas. The St. Joseph River main stem is long, rising in southern Michigan in Hillsdale County flowing from Baw Beese Lake, within of the headwaters of the other St. Joseph River of the eastward-flowing Maumee River watershed. Baw Beese Lake was historically named for the Potawatomi Chief Baw Beese. The river follows a zigzag route generally westward across southern Michigan, dipping into northern Indiana. From its headwaters, it flows initially northwest past Hillsdale into southeastern Calhoun County, then turns abruptly southwest to flow past Tekonsha, Union City, and Sherwood. At Three Rivers it is joined from the north by the Rocky and Portage rivers, then further southwest by the Prairie River from the east. The river continues southward into northern Indiana, flowing west through Elkhart, Mishawaka, and South Bend, where it turns abruptly to north to re-enter southwestern Michigan in southeastern Berrien County. In southwestern Michigan, it follows a wide meandering route generally northwest through Niles and past Berrien Springs. It enters Lake Michigan between St. Joseph and Benton Harbor, receiving the Paw Paw River from the north approximately from its mouth on Lake Michigan. There are 190 dams in the St. Joseph River watershed, and 17 on the river mainstem. Most of these dams block fish passage, although fish ladders constructed on the lower dams allow salmonine passage as far as the Twin Branch Dam in Mishawaka, Indiana. But, the fish ladders are not adequate for many native