California Drought Resources
State Water Board Drought Year Watershed Analyses
Since 2014, due to severe drought conditions, annual water availability analyses are performed to determine allocations to water right holders. Water availability analyses are available through water year 2017 (September 30, 2018) and are updated on a weekly basis.
U.S. Drought Monitor
The U.S. Drought Monitor, established in 1999, is a weekly map of drought conditions that is produced jointly by the National Oceanic and Atmospheric Administration, the U.S. Department of Agriculture, and the National Drought Mitigation Center (NDMC) at the University of Nebraska-Lincoln.
National Oceanic and Atmospheric Administration (NOAA)
- Drought Termination and Amelioration
Based on Palmer drought analysis, the precipitation required to end or ameliorate drought in 6 timescales (1- to 6-months), the percent of normal precipitation this amount is, and the probability of receiving this amount of precipitation based on the historical record.
- Climate Outlook Maps
Monthly and seasonal color outlook maps for temperature and precipitation.
- State of the Climate -- Drought
Discussion of U.S. drought status, with narrative and graphics.
Natural Resources Conservation Service (NRCS)
California Department of Water Resources (DWR)
National Weather Service
Official U.S. weather, marine, fire and aviation forecasts, warnings, meteorological products, climate forecasts and information about meteorology.
California Drought, Visualized with Open Data
This website graphically visualizes data to help understand the effect of drought on rivers, streams, lakes, and reservoirs.
This interactive map service provides regularly updated geospatial data related to drought conditions, including eMODIS VegDRI, AVHRR VegDRI, 7-Day Average Streamflows (USGS Water Watch), Precipitation Derivatives (NWS Precipitation Analysis), and the weekly U.S. Drought Monitor.
Where Does My Water Come From? (Water Education Foundation)
Website listing the drinking water sources for incorporated cities with a population of 10,000 or greater.