Water Resources


The Water Resources Mission Area creates a wide variety of spatial products from GIS datasets, online mappers and decision-support tools, data visualizations, and traditional static maps.

Filter Total Items: 39
Date published: March 4, 2019

Predicted pH at the domestic and public supply drinking water depths, Central Valley, California

This scientific investigations map is a product of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) project modeling and mapping team. The prediction grids depicted in this map are of continuous pH and are intended to provide an understanding of groundwater-quality conditions at the domestic and public supply drinking water zones in the groundwater of the Central Valley.

Attribution: Water Resources
Date published: November 2, 2017

Tualatin River Basin Beaver Study Area

Map of intensive sites and rapid sites where data was collected for the Tualatin River Basin Beaver Study.

Date published: August 31, 2017

WaterWatch Flood Map

Current stream conditions and NWS forecast stream conditions.

Date published: May 18, 2017

Virginia Real-Time Precipitation Network

This interactive map shows current and cumulative rainfall total for precipitation sites in Virginia.  Map provides real-time precipitation radar image to overlay from National Weather Service. 

Date published: January 24, 2017

Assessing Endocrine Disrupting Chemicals Risk In U.S. National Parks

Endocrine disrupting chemicals (EDC) threaten the reproductive success and long-term survival of sensitive aquatic populations in the U.S. National Park Service (NPS). The project employs a standardized EDC risk assessment framework to link new and ongoing research efforts in individual Parks and in Park Monitoring Networks, in order to provide a service-wide assessment of EDC risk in the NPS.


Date published: September 14, 2016

Monitoring Sites: Virginia Water Science Center

Water Monitoring Sites in Virginia

Date published: April 8, 2016

Great Lakes SPARROW Mapper, 2002

This mapper displays SPARROW nutrient load and yield data specifically for U.S. tributaries to the Great Lakes. The results are based on the SPARROW models developed for the Great Lakes, Ohio, Upper Mississippi, Red River Basins (MRB3). Modeling results can be exported as an Excel spreadsheet or a geospatial dataset.

Date published: April 7, 2016

Mississippi/Atchafalaya River Basin (MARB) SPARROW Mapper, 2002

The mapper displays SPARROW nutrient load and yield data and the importance of various nutrient sources for the MARB, given nutrient inputs similar to 2002. Rankings can be shown by major watershed, state, HUC8, tributary, and catchment. Nutrient data can be explored using maps and interactive graphs and tables. Modeling results can be exported as an Excel spreadsheet or a geospatial dataset.

Date published: July 14, 2015

California SPARROW Mapper, 2002

The SPARROW (SPAtially Referenced Regression on Watershed attributes) model was used to simulate annual phosphorus loads and concentrations in unmonitored stream reaches in California, U.S., and portions of Nevada and Oregon.

Attribution: Water Resources
Date published: May 7, 2014

How much water do we use?

Map viewer used to visualize water use by region and date for U.S. freshwater withdrawals, 1950-present (created by USGS VIZLAB)

Date published: September 25, 2013

Eastern United States SPARROW Mapper - 2002

The U.S. Geological Survey applied the SPARROW model to assess the loads delivered in 2002 for estuaries and coastal waters along the Atlantic Ocean and eastern Gulf of Mexico.

Attribution: Water Resources
Date published: September 22, 2012

USGS StreamStats

StreamStats is a Web-based tool that provides streamflow statistics, drainage-basin characteristics, and other information for USGS streamgaging stations and for user-selected ungaged sites on streams. When users select the location of a streamgaging station, StreamStats provides previously published information from a database. When users select a site on an ungaged stream,