Data Access Tools

Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) Viewer Notes The viewer uses extensive JavaScript and frames which means some browsers may not be able to support full interactive capabilities. Additionally, the viewer may be difficult for some users to interpret. These users may contact EROS Customer Services, or the maintainer of these pages for assistance.

The Lower Colorado Monitoring Network is a series of groundwater-level and water-quality wells, as well as streamgages and micro-gravity sites. This interactive map displays the sites and provides links to the most current data.

In California, land subsidence—mostly from groundwater pumping—was first documented by the USGS in the early 20th century. Completion of State and Federal water projects that bring water from California's wet north to its dry south allowed some groundwater aquifers to recover, and subsidence decreased in these areas. Subsidence continues today, sometimes at high rates of more than 1 foot/year.

The Vegetation Dynamics/Drought viewer provides a dynamic online map interface that can be used to view USGS and other data.

This interactive webmap plots water-quality data from domestic and public-supply wells sampled by the USGS for the California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project (GAMA-PBP), and allows users to download datasets. The GAMA-PBP is a cooperative program between the California State Water Resources Control Board and the U.S. Geological Survey.

Interactive map of the Mojave and Morongo groundwater basins. Data layers include sites and data for groundwater levels, water quality, and land subsidence. Groundwater data spans 1994 to the present.