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Hydrogeology

Hydrogeology

Hydrogeology involves using knowledge from both hydrology (the study of water occurrence, distribution, movement, and quality) and geology (the study of the solid earth and the processes that shape and change it) to understand how water interacts with geological systems.

    • Groundwater assessment methodology Featured Article Groundwater assessment methodology Groundwater assessment methodology

      Groundwater assessment methodology is vital for understanding the relationship of aquifer dynamics to precipitation and to the characteristics of the land surface of the Earth.... More »

    • Limestone Featured Article Limestone Limestone

        Limestone  is a sedimentary rock whose chief mineral component is calcite (calcium carbonate: CaCO3). Limestone can be formed by precipitation of calcite... More »

    • Current U.S. Flood Information Featured News Current U.S. Flood Information Current U.S. Flood Information

      When flooding happens, USGS field crews are among the first to respond. During and after storms and floods, USGS field crews measure the streamflow and height of rivers... More »

    • Floods: The power of water Featured News Floods: The power of water Floods: The power of water

      The deadly and destructive power of water High resolution (Credit: NOAA) Did you know fast moving water just above your ankles can knock you off your feet? Most... More »

    • Atmospheric River Storm: ARkStorm Featured Article Atmospheric River Storm: ARkStorm Atmospheric River Storm: ARkStorm

      ARkStorm Scenario The U.S. Geological Survey's (USGS) Multi Hazards Demonstration Project (MHDP) has prepared its second full scenario, called ARkStorm. The scenario... More »

    • Basic Groundwater Hydrology Featured Article Basic Groundwater Hydrology Basic Groundwater Hydrology

      Ground-water hydrology is the subdivision of the science of hydrology that deals with the occurrence, movement, and quality of water beneath the Earth's surface. It is... More »

Recently Updated
Freshwater Last Updated on 2013-04-24 at 19:23 Overview The definition of freshwater is water containing less than 1000 milligrams per liter of dissolved solids, most often salt. The global distribution of... More »
Atmospheric science Last Updated on 2013-04-22 at 17:45 Atmospheric science is the umbrella term for the study of the atmosphere — the blanket of air covering the Earth. It is a relatively new discipline that is concerned... More »
Hydrological Variability and Change Last Updated on 2012-10-31 at 00:49 This article is drawn from Abrupt Climate Change A report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research, U.S. Geological... More »
Sea water Last Updated on 2012-08-23 at 02:02   Sea Water   If there is one thing that just about everyone knows about the ocean is that it is salty. The two most common elements in sea... More »
Permafrost Last Updated on 2012-08-21 at 22:44 A soil is considered permafrost if its temperature remains permanently below the melting point of water for at least two years. Such permafrost soil is ubiquitous in high... More »
Limestone Last Updated on 2012-08-21 at 13:06   Limestone  is a sedimentary rock whose chief mineral component is calcite (calcium carbonate: CaCO3). Limestone can be formed by precipitation of calcite... More »
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