Web Tools

Annual Water Data Reports were published annually for many decades as static archival products that supplemented direct access to current and historical water data provided by the USGS. These formal publications have been discontinued, but historical reports and modern replacements are available.

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.

Central Valley Aquifer Age Dating | USGS California Water Science Center

This web application provides the latest streamflow values for U.S. Geological Survey (USGS) streamgages in Maine relative to seasonal aquatic base flows.

Search and identify Cooperative Research Unit Program federal scientists based on their expertise with various topics and taxon.

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.

Interactive mapping of groundwater levels.

An interactive geonarrative (Esri Story Map) showing 62 field trip stops for exploring the Hayward Fault in the East San Francisco Bay Region of California.

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.

The U.S. Geological Survey uses a depiction and classification scheme for hydrologic units known as hydrologic unit codes (HUCs). HUCs generally represent catchments, and river basins are represented by a unique series of numbers with successively smaller hydrologic units nested inside of larger ones.

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 Land Treatment Digital Library (LTDL) was created by the U.S. Geological Survey to catalog legacy land treatment information on Bureau of Land Management lands in the western United States. The LTDL currently houses thousands of treatments from BLM lands across 10 states.