ACTIVE STUDY AREAS ORGANIZED BY PROVINCE

• North Coast Ranges
  • North SF Bay
• Central Valley
  • Central East Side
  • Central Sacramento
  • Kern
  • Madera/Chowchilla
  • North Sacramento
  • North San Joaquin
  • South Sacramento
  • Southeast San Joaquin
• Sierra Nevada
  • Regional
    • Central Sierra
    • Southern Sierra
    • Tahoe / Martis
• South Coast Ranges
  • Coastal
  • Interior
  • Monterey Bay / Salinas
  • San Francisco Bay
• Basin and Range
  • Owens / Indian Wells
• Desert
  • Antelope Valley
  • Coachella
  • Colorado
  • Mojave
• Transverse and Penninsular Range
  • San Gabriel / San Fernando
  • Santa Ana
  • Santa Clara River
  • Southern Coastal Plain
• San Diego
  • San Diego

DATA CENTER

Google Maps access to CA hydrologic monitoring data
Precipitation
Streamflow
Ground-water Levels
Water Quality
Lakes

• Water Data Maps ()

• NWISWeb ()
• Real-time data ()
• Site Information ()
• Streamflow ()
• Ground water ()
• Water quality ()
• Precipitation ()

• Historical data
• Streamflow ()
• Ground water ()
• Water quality ()
• Annual Data Reports ()

• WaterWatch ()
• Floods/High flows ()
• DroughtWatch ()
• Ground water ()
• 2006 Streamflow Summary ()

ABOUT CALIFORNIA WSC

• Home Page
  • Office information
  • Employee Directory
  • Locations
  • Employment
  • Cooperators
  • Information requests
  • Links
  • Outreach
  • USGS Events

USGS IN YOUR STATE

USGS Water Science Centers are located in each state.