Arroyo Mocho

Arroyo Mocho
The Arroyo Mocho as it passes through Livermore
Location of the mouth of Arroyo Mocho in California
Location
CountryUnited States
StateCalifornia
CountiesAlameda County & Santa Clara County
CitiesPleasanton & Livermore
Physical characteristics
SourceMount Mocho
  location18 mi (30 km) east of Milpitas
  coordinates37°27′13″N 121°31′22″W / 37.45361°N 121.52278°W / 37.45361; -121.52278
  elevation3,160 ft (960 m)
MouthConfluence with South San Ramon Creek to form Arroyo de la Laguna
  location
Pleasanton, California
  coordinates
37°40′37″N 121°54′44″W / 37.67694°N 121.91222°W / 37.67694; -121.91222
  elevation
315 ft (96 m)

Arroyo Mocho is a 34.7-mile-long (55.8 km) stream which originates in the far northeastern corner of Santa Clara County and flows northwesterly into eastern Alameda County, California. After traversing the cities of Livermore and Pleasanton it joins South San Ramon Creek to become Arroyo de la Laguna, which in turn flows to Alameda Creek and thence to San Francisco Bay.