Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

3813 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 110, results 2726 - 2750

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Mercury studies in the Florida Everglades
David P. Krabbenhoft
2000, Fact Sheet 166-96
Public concern for wildlife and human health problems due to mercury (Hg) toxicity has increased substantially since the mid-1980's. These concerns are manifested primarily by the issuance of fish consumption advisories in the majority of U.S. states, Canada, and several European countries because of high levels of mercury in game...
Ecosystem history of Florida Bay
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 144-96
In the past decade seagrass die-offs, algal blooms, and declining numbers of shellfish and sponges have occurred in Florida Bay. These changes have been attributed to human activities; however, neither the natural patterns of change, nor the pre-human baseline for the environment have been determined. Currently, efforts are underway to...
Effects of climate variability and human activities on Chesapeake Bay and the implications for ecosystem restoration
Thomas M. Cronin, Debra A. Willard, Scott Phillips
2000, Fact Sheet 116-00
Chesapeake Bay, the Nation’s largest and most productive estuary (fig. 1), faces complex environmental issues related to nutrients and oxygen, turbidity and sedimentation, toxic dinoflagellates, sea-level rise, and coastal erosion. The Chesapeake Bay Program (CBP) is a partnership among the Chesapeake Bay Commission, the Federal Government, the District of Columbia,...
Magnitude and distribution of flows into northeastern Florida Bay
Eduardo Patino, Clinton D. Hittle
2000, Fact Sheet 030-00
Changes in water-management practices have been made to accommodate a large and rapidly growing urban population along the Atlantic Coast and to meet the demand for intensive agricultural activities. These changes have resulted in a highly managed hydrologic system consisting of numerous canals, levees, control structures, and pumping stations that...
High Plains regional ground-water study
Kevin F. Dennehy
2000, Fact Sheet 091-00
Over the last 25 years, industry and government have made large financial investments aimed at improving water quality across the Nation. Significant progress has been made; however, many water-quality concerns remain. In 1991, the U.S. Geological Survey (USGS) began implementing a full-scale National Water-Quality Assessment Program to provide consistent and...
Comparison of water-quality samples collected by siphon samplers and automatic samplers in Wisconsin
David J. Graczyk, Dale M. Robertson, William J. Rose, Jeffrey J. Steur
2000, Fact Sheet 067-00
In small streams, flow and water-quality concentrations often change quickly in response to meteorological events. Hydrologists, field technicians, or locally hired stream ob- servers involved in water-data collection are often unable to reach streams quickly enough to observe or measure these rapid changes. Therefore, in hydrologic studies designed to describe...
Panola Mountain, Georgia: A Water, Energy, and Biogeochemical Budgets Program Site
Norman E. Peters, Richard P. Hooper, Thomas G. Huntington, Brent T. Aulenback
2000, Fact Sheet 162-99
The Panola Mountain Research Watershed (PMRW) is a 41-hectare forested watershed in the southern Piedmont physiographic province near Atlanta, Georgia. The watershed contains a naturally regenerated second-growth forest on abandoned agricultural land, typical of the Piedmont. Research at PMRW has focused on how streamflow is generated, and in particular, on how water and solutes move...
Water flow in the high plains aquifer in Northwestern Oklahoma
Richard R. Luckey, Noel I. Osborn, Mark F. Becker, William J. Andrews
2000, Fact Sheet 081-00
The High Plains is a major agricultural area, supported primarily by water from the High Plains aquifer, which is used to irrigate wheat and corn and to raise cattle and swine. The U.S. Geological Survey (USGS) and the Oklahoma Water Resources Board (OWRB) began a study of the High Plains...
The Sun and climate
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 095-00
Many geologic records of climatic and environmental change based on various proxy variables exhibit distinct cyclicities that have been attributed to extraterrestrial forcing. The best known of these are the changes in Earth’s orbital geometry called Milankovitch Cycles, with periodicities of tens to hundreds of thousands of years. However, many...
Availability of Ground-Water Data for California, Water Year 1999
Julia A. Huff
2000, Fact Sheet 090-00
The Water Resources Division of the U.S. Geological Survey, in cooperation with Federal, State, and local water agencies, obtains a large amount of data pertaining to the ground-water resources of California each water year. These data constitute a valuable data base for developing an improved understanding of the water resources...
Earth Explorer
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 083-00
The U.S. Geological Survey's (USGS) Earth Explorer Web site provides access to millions of land-related products, including the following: Satellite images from Landsat, advanced very high resolution radiometer (AVHRR), and Corona data sets. Aerial photographs from the National Aerial Photography Program, NASA, and USGS data sets.  Digital cartographic data from...
The National Atlas of the United States of America
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 082-00
In 1970, the U.S. Geological Survey (USGS) published The National Atlas of the United States of America™. It was a 400-page, oversized, 12-pound collection of maps. In 1998, a new and innovative National Atlas was released. This edition includes both electronic and paper map products and exploits information management, access,...
Sleepers River, Vermont: a Water, Energy, and Biogeochemical Budgets Program site
James B. Shanley
2000, Fact Sheet 166-99
The Sleepers River Research Watershed in northeastern Vermont was established by the Agricultural Research Service (ARS) of the U.S. Department of Agriculture in 1959 and is now operated jointly by the U.S. Geological Survey (USGS) and the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL), will collaboration from several...