Temecula Creek, formerly known as the Temecula River, runs 32.6 miles (52.5 km) through southern Riverside County, California, United States, past the rural communities of the Temecula Valley along the State Route 79 corridor, such as Aguanga, and ending 0.5 miles (0.80 km) southeast of the city of Temecula. The creek is filled with boulders, and is typically dry and sandy. It is a relatively undeveloped coastal-draining watershed. Until the 1920s water flowed in Temecula Creek year-round.