Source Water and Watershed Protection Web map

Groundwater is an important source of drinking water stored in the earth beneath our feet, in spaces between sand, soils, and fractured rock known as an aquifer. Layers of aquifers […]

Station Viewer

Climate data viewer for the western United States. Data includes cooling degree days, growing degree days, heating degree days, precipitation, snowfall, and temperature (max, mean, min).

Oxygenated Fuels Reports 2013-2014

The AQMD implements an oxygenated fuels program to reduce wintertime carbon monoxide emissions from motor vehicles. The following annual reports summarize the results of the program.