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USGS operates a number of water-related programs, notably the National Streamflow Information Program [22] and National Water-Quality Assessment Program. [23] USGS Water data is publicly available from their National Water Information System [ 24 ] database.
The USGS headquarters in Reston, VA. Today, the United States Geological Survey Library's users have access to over 1.7 million items: over 980,000 books and journals, over 600,000 maps, over 8,000 electronic media items (DVDs, CDs), and subscribes to over 113,000 electronic journal titles and eBooks.
USGS Geographic Names Information Service; USGS Hydrologic Unit Map – State of Virginia (1974) Salmon, Emily J.; Edward D. C. Campbell Jr., eds. (1994). The Hornbook of Virginia History (4th ed.). Richmond, VA: Virginia Office of Graphic Communications. ISBN 0-88490-177-7
The Appomattox River is a tributary of the James River, approximately 157 miles (253 km) long, [4] in central and eastern Virginia, named for the Appomattocs Indian tribe who lived along its lower banks in the 17th century.
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.
Aquifers of the United States are organized by national principal aquifer codes and names assigned by the National Water Information System (NWIS). Aquifers are identified by a geohydrologic unit code (a three-digit number related to the age of the formation) followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name.
The data was entered in spreadsheet format or in ESRI shapefiles and submitted via e-mail to the USGS National Geospatial Technical Operations Center(s) in Denver, Colorado, and Rolla, Missouri. During the registration process, prospective volunteers submitted a list of the 7.5 minute quadrangle maps on which they wished to work.
The Eastern Branch Elizabeth River is a 9.0-mile-long (14.5 km) [1] tidal river in the Hampton Roads area of the U.S. state of Virginia.The river flows from east to west, starting in Virginia Beach.