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Publication Extents

Not all publications have extents, not all extents are completely accurate
Map Accuracy Standards
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 171-99
An inaccurate map is not a reliable map. ?X? may mark the spot where the treasure is buried, but unless the seeker can locate ?X? in relation to known landmarks, the map is not very useful. The U.S. Geological Survey (USGS) publishes maps and other products at high levels of accuracy....
Estimation of minimum 7-day, 2-year discharge for selected stream sites, and associated low-flow water-quality data, southeast Texas, 1997-98
Jeffery W. East
1999, Fact Sheet 122-99
The U.S. Geological Survey (USGS) operates a network of streamflow-gaging stations in Texas that provides discharge data used for water-management decisions and various other purposes. Operating stations at all locations where discharge data are needed is not feasible, but the statistical characteristics of the network station data can be used...
U.S. Geological Survey World Wide Web Information
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 071-99
The U.S. Geological Survey (USGS) invites you to explore an earth science virtual library of digital information, publications, and data. The USGS Internet World Wide Web sites offer an array of information that reflects scientific research and monitoring programs conducted in the areas of natural hazards, environmental resources, and cartography....
Trends in precipitation and stream-water chemistry in the northeastern United States, water years 1984-96
D. W. Clow, M. Alisa Mast
1999, Fact Sheet 117-99
Trends in precipitation and stream-water chemistry during water years 1984-96 were examined at eight precipitation monitoring sites and five nearby streams operated by the U.S. Geological Survey in the northeastern United States. The statistical analyses indicate the following: 1)Stream-water sulfate (SO4) concentrations decreased at seven of eight precipitation monitoring sites...
Monitoring the Water Quality of the Nation's Large Rivers: Mississippi River Basin NASQAN Program
Richard H. Coupe, Donald A. Goolsby
1999, Fact Sheet 055-99
The U.S. Geological Survey (USGS) has monitored water quality in the Mississippi River Basin as part of the National Stream Quality Accounting Network (NASQAN) since 1995, applying a basinwide perspective to understanding water quality on a regional scale (Hooper and others, 1997). The objectives of the Mississippi River Basin NASQAN...
A Topographic Field Trip of Washington, D.C. - A Cartographic Multimedia Application
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 178-99
The U.S. Geological Survey (USGS) has produced ?A Topographic Field Trip of Washington, D.C.,' a multimedia CD-ROM that uses topographic maps to tour Washington, D.C. Although designed for the middle school grade level, it can also be used to teach introductory topographic map reading skills to any level. Two versions of...
Using maps in genealogy
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 140-99
Maps are one of many sources you may need to complete a family tree. In genealogical research, maps can provide clues to where our ancestors may have lived and where to look for written records about them. Beginners should master basic genealogical research techniques before starting to use topographic maps....
The Scientific Assessment and Strategy Team
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 103-99
The flood of 1993 in the Upper Mississippi River Basin caused widespread devastation. The human and economic costs were high. The total flood and other related damage estimates were in the $10 billion to $16 billion range, with total Federal expenditures in excess of $5.4 billion. In response to the...
Use of semipermeable membrane devices (SPMD) to assess occurrence and estimate water concentrations of selected organic compounds in the Rio Grande from Presidio to Brownsville, Texas
J. Bruce Moring
1999, Fact Sheet 100-99
In Texas, the Rio Grande forms the international boundary between Mexico and the United States and extends about 2,000 kilometers from El Paso to the mouth of the Rio Grande just south of Brownsville, where the river flows into the Gulf of Mexico (fig. 1). The North American Free Trade...
Ground-water resources of Tooele Valley, Utah
David D. Susong
1999, Fact Sheet 125-99
Ground water provides much of the water supply for residents of Tooele Valley (fig. 1). The protection, development, and wise management of ground-water resources are important to support community growth and to ensure the continued availability of ground water for all users.The U.S. Geological Survey, in cooperation with Tooele County,...
The Global Positioning System
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 062-99
The Global Positioning System (GPS) is a constellation of navigation satellites called Navigation Satellite Timing And Ranging (NAVSTAR), maintained by the U.S. Department of Defense. Many outdoor enthusiasts recognize that a handheld GPS receiver can be an accurate tool for determining their location on the terrain. The GPS receiver helps...
Santa Ana Basin
Scott N. Hamlin, Kenneth Belitz, Katherine S. Paybins
1999, Fact Sheet 054-99
New Mexico
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 032-99
The National Hydrography Dataset
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 106-99
The National Hydrography Dataset (NHD) is a newly combined dataset that provides hydrographic data for the United States. The NHD is the culmination of recent cooperative efforts of the U.S. Environmental Protection Agency (USEPA) and the U.S. Geological Survey (USGS). It combines elements of USGS digital line graph (DLG) hydrography...