Arroyo Viejo

Arroyo Viejo
Old Creek
Location of the mouth of Arroyo Viejo in California
Location
CountryUnited States
StateCalifornia
RegionAlameda County
CityOakland
Physical characteristics
Source 
  coordinates37°45′38″N 122°07′48″W / 37.76056°N 122.13000°W / 37.76056; -122.13000
  elevation450 ft (140 m)
MouthSan Leandro Bay
  coordinates
37°45′17″N 122°12′05″W / 37.75472°N 122.20139°W / 37.75472; -122.20139
  elevation
1 ft (0.30 m)
Basin features
Tributaries 
  rightArroyo Melrose Highlands Branch, 73rd Avenue Branch

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