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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 dissolved in... 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 »

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Water profile of Lithuania Last Updated on 2012-05-20 at 22:33 Geography and Population Lithuania, with a total area of 65,200 square kilometers (km2), is one of the three Baltic states. It is bordered in the west by the... More »
Less rainfall for drought-sensitive Southern... Last Updated on 2012-05-19 at 17:57 Increasing aridity could lead to major problems for societies and ecosystems in already-arid places. Dead Ahead: Less Rainfall for Drought-Sensitive Southern Hemisphere... More »
Atmospheric River Storm: ARkStorm Last Updated on 2012-05-07 at 19:24 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 »
Molten Rock as a Source of High-Grade Energy Last Updated on 2012-05-07 at 19:22 Iceland Volcano's Molten Rock Could Become Source of High-Grade Energy Krafla volcano gives geologists unique, unexpected opportunity to study magma Geologists... More »
Summary and key findings of ACIA on Arctic Climate -... Last Updated on 2012-05-07 at 17:55 This is Section 2.8 of the Arctic Climate Impact Assessment Lead Author: Gordon McBean. Contributing Authors: Genrikh Alekseev, Deliang Chen, Eirik Førland, John Fyfe,... More »
Hydrological Variability and Change Last Updated on 2012-05-07 at 13:46 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 Survey,... More »
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