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.

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 Mojave River and associated groundwater aquifers are important water supplies in the Mojave Desert of Southern California. The river and the aquifer are connected, and when hydrologic conditions change in one, the other is usually affected. This new web tool explores the connections between precipitation, streamflow, groundwater, subsurface geology, and water quality in the Mojave River.

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.

Is the Colorado River Basin in a drought or is it aridifying? The Colorado River Basin is no stranger to drought. However, not all droughts are the same. It is important to know whether the current drought is actually the first stages of aridification, because planning for and managing a drought is different than aridification.

Use this visualization tool to explore and enhance your understanding of historical climatic and hydrologic conditions at select CDFW Wildlife Areas (WA) and Ecological Reserves (ER). The properties highlighted by this tool are currently serving as CDFW Sentinel Sites.

Explore real-time soil moisture data by clicking on each point. Access site-specific USGS NWIS Water Data pages for time-series data on soil temperature, electrical conductance, and moisture. Some sites also include NRCS soil profile descriptions.

Streams, rivers, lakes and reservoirs are important natural resources for irrigation, public supply, wetlands and wildlife. Excess precipitation that flows into these sources is called runoff, and it's an important drought indicator. The California Water Science Center tracks both monthly and annual runoff.