Falcon International Reservoir (Spanish: Embalse Internacional Falcón), commonly called Falcon Lake, is a reservoir on the Rio Grande 40 miles (64 km) southeast of Laredo, Texas, United States, and Nuevo Laredo, Tamaulipas, Mexico. The huge lake is bounded by Starr and Zapata counties on the Texas side of the international border and the municipality and city of Nueva Ciudad Guerrero on the Tamaulipas side of the border.