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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 (3 items)

Hydrologic maps (28 items)
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Results 111 - 120 of 410 listed by similarity [list alphabetically]
PDF How does a U.S. Geological Survey streamgage work? [More info]
Explains how streamflow is measured, how it relates to water level, how stream discharge is measured, and how to find data on streamflow.
Hudson River salt front data [More info]
Tide stage, specific conductance, water temperature, and freshwater inflow at selected Hudson River (New York) gages updated every 4-hours to measure the effects of freshwater withdrawals and upstream movement of the salt front.
Hydro-Climatic Data Network (HCDN): streamflow data set, 1874 - 1988 [More info]
The Hydro-Climatic Data Network, or HCDN, consists of streamflow records for 1,659 sites throughout United States and its Territories. Records span the period 1874 through 1988, and represent a total of 73,231 water years of information.
Hydroacoustic current meters for the measurement of discharge in shallow streams and rivers [More info]
Description and illustrations of hydroacoustic current meters for measuring the discharge in streams and rivers with links to wading discharge measurements, project progress and plans and references.
Hydroacoustic methods [More info]
Technical information on acoustic methods of measuring water currents and applications of hydroacoustic techniques to problems in surface water hydrology.
Instantaneous Data Archive - IDA [More info]
The USGS collects continuous stage, discharge, and other instantaneous time-series data on the nations rivers. This Archive provides streamflow data and historical data, often several years worth.
Kansas drought watch [More info]
Drought map of Kansas link to real-time data for stream gaging stations and links to historic droughts of Kansas, ground water, drought definitions, and references.
Kansas flood watch [More info]
Flood map of Kansas link to real-time data for stream gaging stations and links to flood press releases, historic floods of Kansas, flood frequency data, photos, information on hydrology of floods, and flood hazard maps.
Kentucky District - program highlights [More info]
Brief descriptions of research programs in water resources in Kentucky with a few links to program websites. Programs include data collection projects, acid mine drainage, hydrodynamics, geology, waste site cleanup and hydrogeology.
Large floods in the United States: where they happen and why [More info]
Discussion of large floods and occurrence in relationship to regional climatology, topography, and basin size.
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