Brea Creek is one of four principal tributaries of Coyote Creek, which is a lower tributary of the San Gabriel River in California. It drains parts of Orange, Riverside, and San Bernardino counties. The creek flows 11.7 miles (18.8 km) from the cities of Brea and Anaheim to Whittier, where its mouth is on the left bank of Coyote Creek, at a point 481 feet (147 m) lower in elevation.