Arroyo Seco

Arroyo Seco is a canyon and seasonal waterway that flows from the San Gabriel Mountains through Pasadena and joins the Los Angeles River near downtown Los Angeles. The area connects mountain terrain with urban surroundings and contains parks, trails, and recreational areas along its banks.

The area was originally inhabited by Native Americans before Spanish explorers arrived in the region during the 18th century. The waterway later became important for managing water resources as Los Angeles grew into a major city.

The name comes from Spanish, meaning "dry creek," reflecting how the waterway flows only seasonally. Today, residents use the banks and nearby parks as everyday spots to walk, rest, and spend time outdoors.

Visitors can explore the area on foot or by bike from several park entrances throughout the region. Water flows mainly after heavy rain, so it helps to check local conditions before planning a visit.

The Jet Propulsion Laboratory, a leading space research center, sits at the mouth of Arroyo Seco. This important facility chose the location because of its proximity to the waterway and mountain landscape.