Data Access Tools

The Central Valley has four hydrologic regions, from north to south: the Sacramento Valley, the Delta & Eastside Streams, the San Joaquin Basin, and the Tulare Basin. Water flows from Sacramento Valley, Tulare Basin, and the San Joaquin Basin, into the Delta & Eastside Streams through the Central Valley's only natural outlet, the Carquinez Strait, on its way to the Pacific Ocean.

The Central Valley Hydrologic Model version 2 (CVHM2) is an integrated surface–subsurface hydrologic model, representing the major components of the hydrologic system of California’s Central Valley. This new decision support tool is useful for testing water management strategies in California's Central Valley.

The USGS-DOE Cooperative Studies and Groundwater Monitoring in Nevada website provides an interactive and easy-to-use interface to access groundwater levels, groundwater withdrawal, and water-temperature data for wells on and adjacent to the NNSS.

The USGS-NNSS Regional Groundwater Explorer web application is a user-friendly and interactive interface that provides access to a comprehensive database of groundwater levels, hydrologic conditions, construction, and descriptive narratives for wells on and adjacent to the NNSS.

This ArcGIS Online Dashboard provides an interactive platform to view drilling waste land application data in Oklahoma.

Explore water-quality data collected from over 3,000 sites within the Kootenai River Basin.