 It runs into Upper San Leandro Reservoir and then Lake Chabot, both reservoirs are North of the unincorporated town of Castro Valley.It then flows through the city of San Leandro, and after crossing Hegenberger Road just north of Oakland International Airport on into San Leandro Bay of San Francisco Bay.Although it is channeled and culverted in places, it is remarkable among East Bay streams for being mostly uncovered throughout most of its course.