WFO San Joaquin Valley Hydrology Page

Current Hydrologic warnings/watches/advisories for California

Latest River Statement for the Upper San Joaquin River Basin

Monthly Precipitation Maps

Graphical River Guidance 

• Bear Creek at McKee Road
• Merced River at Happy Isles
• Merced River at Pohono Bridge
• Merced River at Stevenson
• San Joaquin River at Newman
• Kern River at Kernville

Learn More About Graphical River Guidance

River Stages 
NWPS - NWS Hanford Service Area
California (real time water data from the USGS) 
Tabular data by river basin 
Definitions of Monitor Stage and Flood Stage 


Maps of River Stages in the San Joaquin Valley (CNRFC) 
Current hour 
1 hour ago 
2 hours ago 
Flood Outlook Map (CNRFC forecast of significant river flooding) 

Products from CNRFC 
Discussion 
24-hr graphical QPF...Day 1 thru Day 3 
Event Driven River Forecast Guidance


Products from HPC (Hydrometeorological Prediction Center) 
Discussion 
Excessive Rainfall Potential Outlook 
24-hr graphical QPF...Day 1 thru Day 5 



Realtime Data 
GOES Network Precip gages 


Rainfall Maps 

Central and Southern CA 
1-hour precipitation 
6-hour precipitation 
24-hour precipitation 

Southern Sierra Nevada 
1-hour precipitation 
6-hour precipitation 
24-hour precipitation 

Kern County - Tehachapis 
1-hour precipitation 
6-hour precipitation 
24-hour precipitation 

Snowfall Data 
Current Snow Conditions in CA 
Snowcover Map 

Other Links 
California-Nevada RFC 
Dept of Water Resources 
California Data Exchange Center 
USGS