Arroyo Viejo

Arroyo Viejo is a westward flowing 5.1 miles (8.2 km) creek that begins in the Oakland Hills in Alameda County, California, and joins just before entering San Leandro Bay, a part of eastern San Francisco Bay.

Arroyo Viejo

Arroyo Viejo is a westward flowing 5.1 miles (8.2 km) creek that begins in the Oakland Hills in Alameda County, California, and joins just before entering San Leandro Bay, a part of eastern San Francisco Bay.