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This map layer portrays the estimated use of water in counties in the United States, in the year 1995. The map layer was extracted from the U.S. Geological Survey Water Resources of the United States water use database, which is a long term data set that documents information on water use since 1950. This map layer contains information about water use for public supply, industrial, irrigation, mining, livestock, and thermoelectric power, by county throughout the United States.
This map layer shows areal and linear water features of the United States, Puerto Rico, and the U.S. Virgin Islands. The original file was produced by joining the individual State hydrography layers from the 1:2,000,000- scale Digital Line Graph (DLG) data produced by the USGS. This map layer was formerly distributed as Hydrography Features of the United States. This is a revised version of the January 2003 map layer.
Categories: Web Site;
Tags: hydrologic
Approximately 5,000 of the 6,900 U.S. Geological Survey sampling stations are equipped with telemetry to transmit data on streamflow, temperature, and other parameters back to a data base for real-time viewing via the World Wide Web. A map of the realtime stations is produced every day.
Categories: Web Site;
Tags: hydrologic
The National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs and wells. Within the NHD, surface water features are combined to form "reaches," which provide the framework for linking water-related data to the NHD surface water drainage network. These linkages enable the analysis and display of these water-related data in upstream and downstream order.
Categories: Web Site;
Tags: hydrologic,
springs (hydrographic),
surface water (non-marine),
water,
water bodies
These pages provide access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, and Puerto Rico. The USGS investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing our water resources.
Categories: Web Site;
Tags: hydrologic
A joint venture involving the National Atlas programs in Canada (Natural Resources Canada), Mexico (Instituto Nacional de Estad¿stica Geograf¿a e Inform¿tica), and the United States (U.S. Geological Survey), as well as the North American Commission for Environmental Co-operation, has led to the release (June 2004) of several new products: an updated paper map of North America, and its associated geospatial data sets and their metadata. These data sets are available online from each of the partner countries both for visualization and download. The North American Atlas data are standardized geospatial data sets at 1:10,000,000 scale. A variety of basic data layers (e.g. roads, railroads, populated places, political...
Categories: Web Site;
Tags: hydrologic
This map layer contains hydrologic unit boundaries and codes for the United States, Puerto Rico, and the U.S. Virgin Islands. It was revised for inclusion in the National Atlas of the United States of America, and updated to match the streams file created by the USGS National Mapping Division (NMD) for the National Atlas of the United States of America. This is a revised version of the November 2002 map layer.
Categories: Web Site;
Tags: hydrologic
This map layer shows the locations of wells maintained by the U.S. Geological Survey (USGS) that are used to monitor the effects of droughts and other climate variability on ground-water levels. The Ground-Water Climate Response Network consists of a national network of about 140 wells monitored as part of the Ground-Water Resources Program. It is supplemented by more than 200 wells monitored as part of the Cooperative Water Program that meet the same network criteria, which are: open to a single, known hydrogeologic unit; known well construction that allows good water-level measurements; located in unconfined aquifers or near-surface confined aquifers that respond to climatic fluctuations; minimally affected by...
Categories: Web Site;
Tags: hydrologic
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