Search results
Results From The WOW.Com Content Network
The water-quality data include highway-runoff-quality statistics, upstream-water-quality statistics, downstream-water-quality definitions, and BMP-performance statistics. There also is a GUI form for running the model and accessing the distinct set of output files.
Using the basic water features, flow network, linked information, and other characteristics, it is possible to study cause and effect relationships, such as how a source of poor water quality upstream might affect a fish population downstream. The NHD is part of the United States Geological Survey The National Map for the United States.
USGS operates a number of water-related programs, notably the National Streamflow Information Program [23] and National Water-Quality Assessment Program. [24] USGS Water data is publicly available from their National Water Information System [25] database.
Aquifers of the United States Withdrawal rates from the Ogallala Aquifer.. This is a list of some aquifers in the United States.. Map of major US aquifers by rock type. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to groundwater wells and springs.
National Water Quality Assessment Data Warehouse: Large amounts of georeferenced data about water quality. Includes ground and surfacewater sampling data, discharges and health information. OpenTopography: OpenTopography facilitates community access to high-resolution, Earth science-oriented, topography data, and related tools and resources.
Water quality modeling also helps determine correlations to constituent sources and water quality along with identifying information gaps. [2] Due to the increase in freshwater usage among people, water quality modeling is especially relevant [3] both in a local level and global level. In order to understand and predict the changes over time in ...
Once transmitted to NCEI, data are archived and made available for use by researchers and others in public and private sectors. The data and products offer information about climate and weather, [7] coasts, oceans, [8] and geophysics. [9] NCEI Subject Matter Experts (SMEs) collaborate on national and international research projects.
All rivers with average discharge more than 15,000 cubic feet per second are listed. Estimates are approximate, because data are variable with time period measured and also because many rivers lack a gauging station near their point of outflow.