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The Bureau of Reclamation's interactive Reservoir Storage Dashboard provides current conditions for 44 major Reclamation reservoirs and comparisons with historical storage data. For each reservoir, users can view the current storage amount in acre-feet, the current storage level as a percent of average (based on the last 30 years of data), and records for lowest observed storage.

River DroughtCast is an interactive online tool that delivers current streamflow drought conditions and weekly forecasts of streamflow drought at approximately 3,000 USGS streamgages with more than 40 years of data across the lower 48 states.

This interactive tool shows California groundwater level data, including depth below ground surface, groundwater elevation, and groundwater change in elevation. 

Interactive map shows results of 2012-2018 aerial tree-mortality surveys: numbers of dead trees per acre, high hazard zones, asset locations and more information related to drought-caused tree mortality and subsequent bark beetle infestations.