Web Tools

Barka Slough is a historically perennial wetland located at the downstream western end of California's San Antonio Creek Valley watershed. Plant and animal species in the area are experiencing impacts from habitat changes. The tool lets users explore and enhance the understanding of the hydrology and biology of the slough.

In both Native Hawaiian and Alaska Native traditions, birds play important roles in tracking seasons, signaling weather changes, guiding navigation, and locating food resources. Their movements and behaviors are read as part of an ongoing dialogue with the natural world.

The Humboldt Capture Query Tool (HCQT) is an interactive application that helps water managers, scientists, and public stakeholders explore how groundwater pumping affects streamflow and other water sources across the Humboldt River Basin.

Water Data for the Nation (WDFN) is the home for USGS’s modernization of public delivery of water data.

This site is the home for modernized access to USGS water data in machine-readable formats via REST APIs, a common type of web service programs use to search and download data. These services provide USGS water data, ranging from continuous measurements of streamflow to information about individual USGS sites and more.

Water information is fundamental to national and local economic well-being, protection of life and property, and effective management of the Nation’s water resources. The Water Data Blog posts highlight water data developments, data, and applications.

The Geochemical Data Portal assembles, reformats, corrects, and archives data obtained from the geochemical analysis of geologic samples collected for USGS and Department of Energy studies.

This interactive web application allows you to explore, filter, and download subsets of the Energy Geochemistry Database (EGDB). The EGDB contains analytical data for samples collected by the Energy Resources Program (ERP) to develop an understanding of the physical and geochemical processes responsible for hydrocarbon formation.

The Sea Otter Survey Data Visualization Tool was developed by the U.S. Geological Survey (USGS) to facilitate visualizing and downloading sea otter population survey data in an interactive mapping application.

The Bull Trout Population Dynamics Simulation Tool visualizes and provides estimates of bull trout populations in subwatersheds (HUC 12).

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.