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Hydrology
Branch of earth science that deals with water as it occurs in the atmosphere, on the surface of the ground, and underground.
Subtopics:
Hydrodynamics (2 items)

Hydrologic maps (28 items)
Related topics:
Results 31 - 40 of 286 listed by similarity [list alphabetically]
PDF Discontinuous nature of kriging digital terrain models [New Window]
Research exploring the mathematical properties of kriging, a widely-used surface interpolation method. The continuity properties of kriging digital terrain models over a wide range of terrain types helps hydrologists assess the usefulness of kriging for D
Drought watch - USGS state information on drought [New Window]
Map display that highlights states where the streamflow index at USGS streamgages, averaged statewide, were below normal for the past seven days with links to comparison of recent streamflow values with historic values.
Drought watch Pacific Northwest states: Washington, Oregon, Idaho [New Window]
Drought water homepage with links to maps showing streamflow conditions, drought definitions, resources, publications, and answers to Frequently Asked Questions (FAQs).
Duration and current conditions graphs for selected Pennsylvania sites [New Window]
Plots of streamflow averages and ground water depths for selected hydrologic sites in Pennsylvania.
Ecological studies in the National Water-Quality Assessment (NAWQA) Program [New Window]
Description of cooperative ecological research associated with the National Water-Quality Assessment program with links to current projects, download data, publications, and publications on biological sampling, habitat and laboratory protocols.
Effects of land use on water quality in Michigan [New Window]
Links to projects that provide information on the relation of land use to water quality, sources of pollutants, or trends in water quality.
Estimated freshwater withdrawals in Oklahoma, 1995 [New Window]
1995 freshwater withdrawal estimates for Oklahoma by source and category. Withdrawal data from ground water and surface water for domestic, commercial and agricultural use.
Estimated freshwater withdrawals in Oklahoma, 2000 [New Window]
2000 freshwater withdrawal estimates for Oklahoma by source and category. Withdrawal data from ground water and surface water for domestic, commercial and agricultural use.
PDF Field techniques for estimating water fluxes between surface water and ground water [New Window]
A guide to measuring the flow of water across the ground water surface water interface, with an overview of available methods and details of specific methods to use.
Flagstaff Field Center [New Window]
Homepage for the Flagstaff Field center with links to space science, water and ice studies, earth sciences, biological resources, Grand Canyon Monitoring and Research Center, outreach & education, data and software, and images.
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