California Water Data
This page is a portal to all kinds of information on the current and past state of water resources, both in California and around the country. Get real-time information on California water resources via a searchable Google map interface:
Real Time Streamflow Conditions:
Real-time streamflow data from automated equipment, representing the most current hydrologic conditions.
Data from automated field equipment representing the most current hydrologic water quality conditions.
USGS Data Mapper
Shows real time current California conditions including surface-water, groundwater, spring sites, atmospheric sites and more.
National Water Data
Information on water resources around the country, including Frequently Asked Questions.