Abstract
A full‐day special session was held at the 1988 AGU Spring Annual meeting in Baltimore on “Paleohydrology: Evolution of Groundwater Flow Systems.” The symposium was cosponsored by the Groundwater Committee of the Hydrology Section of AGU and by the U.S. Committee of the International Association of Hydrogeologists. The symposium focused on how and why long‐term changes in groundwater flow systems can influence the modern distributions of hydraulic head, temperature, and solutes in regional aquifers.Most groundwater investigations today are on problems associated with recent human impacts on present‐day hydrogeologic conditions. For example, groundwater flow and transport models are commonly calibrated using historical data collected during a few years or decades. When models are calibrated, it generally is assumed that the aquifer system is in a natural steady state condition prior to human influence. Papers presented during this symposium demonstrate the fallacy of this assumption in many situations.
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