Web Tools

The USGS Groundwater Climate Response Network (CRN) is a system of wells and springs selected to monitor the effects of climate variability on groundwater systems nationwide.

topoBuilder is a public web application released by the National Geospatial Program that enables users to request customized USGS-style topographic maps, known as an OnDemand Topo, that utilize the best available data from The National Map.

The Carson River Basin Hydro Mapper web application provides a modern and easy-to-use interface with the USGS National Water Information System (NWIS).

Search a table containing 835 contaminants and their associated water-quality benchmarks and standards.

The Integrated Data and Tools Catalog is an online platform that allows modelers and researchers to explore and share datasets, tools and services, and use cases used by Water Resources Mission Area (WMA) projects to advance water science activities.

Surface water sites associated with the restoration effectiveness monitoring in the Vermilion River.

The Earth Observing Satellites Online Compendium contains details about past, present and future Earth observing satellites and the sensors they carry. This information compiled by staff at the USGS Earth Resources Observation and Science (EROS) Center in Sioux Falls, South Dakota.

Do we have your trails? The USGS Trail Data Portal allows land managers to submit their trail data for potential inclusion into the nationwide trails dataset. The dataset must have at least 50 miles of trails, be in the public domain, and pass a data review to be included. Email trails@usgs.gov for more information.

TRAILS – Trail Routing, Analysis, and Information Linkage System is a trail planning and collaboration tool that utilizes geospatial analysis to determine potential routes for new trail connections or to reroute an existing trail.

The USGS Trails Explorer visualizes the current distribution of aggregated trails.

The location of the freshwater–saltwater interface along the coast is an important factor in the ecological and socioeconomic dynamics of coastal communities. Salinity is a critical response variable that integrates hydrologic and coastal dynamics including sea level, tides, winds, precipitation, streamflow, and tropical storms.

The USGS developed the SPARROW (SPAtially Referenced Regressions On Watershed attributes) modeling framework to relate water-quality monitoring data to upstream nutrient and sediment sources and watershed characteristics. The mapper can be used to evaluate alternative hypotheses about the relative importance of various pollutant sources.