Conejos River, c.75 mi/121 km long, S Colo.; rises at Continental Divide, in S San Juan Mts. in NW Conejos co., in Rio Grande Natl. Forest; flows first NE through Platoro Reservoir, then SE and NE again, past Conejos and Manassa, to Rio Grande, 10 mi/16 km E of Sanford.