Simulation Of Groundwater Level And Salinity Changes In The Eastern Shore Virginia PDF Download

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Simulation of Groundwater Flow in the Coastal Plain Aquifer System of Virginia

Simulation of Groundwater Flow in the Coastal Plain Aquifer System of Virginia
Author: U.S. Department of the Interior
Publisher: CreateSpace
Total Pages: 126
Release: 2014-03-04
Genre: Reference
ISBN: 9781496120595
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The groundwater model documented in this report simulates the transient evolution of water levels in the aquifers and confining units of the Virginia Coastal Plain and adjacent portions of Maryland and North Carolina since 1890. Groundwater withdrawals have lowered water levels in Virginia Coastal Plain aquifers and have resulted in drawdown in the Potomac aquifer exceeding 200 feet in some areas. The discovery of the Chesapeake Bay impact crater and a revised conceptualization of the Potomac aquifer are two major changes to the hydrogeologic framework that have been incorporated into the groundwater model.

Development of a Numerical Model to Simulate Groundwater Flow in the Shallow Aquifer System of Assateague Island, Maryland and Virginia

Development of a Numerical Model to Simulate Groundwater Flow in the Shallow Aquifer System of Assateague Island, Maryland and Virginia
Author: U.S. Department of the Interior
Publisher: CreateSpace
Total Pages: 40
Release: 2014-03-30
Genre: Reference
ISBN: 9781496177964
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Download Development of a Numerical Model to Simulate Groundwater Flow in the Shallow Aquifer System of Assateague Island, Maryland and Virginia Book in PDF, ePub and Kindle

A three-dimensional groundwater-flow model was developed for Assateague Island in eastern Maryland and Virginia to simulate both groundwater flow and solute (salt) transport to evaluate the groundwater system response to sea-level rise. The model was constructed using geologic and spatial information to represent the island geometry, boundaries, and physical properties and was calibrated using an inverse modeling parameter-estimation technique. An initial transient solute-transport simulation was used to establish the freshwater-saltwater boundary for a final calibrated steady-state model of groundwater flow. This model was developed as part of an ongoing investigation by the U.S. Geological Survey Climate and Land Use Change Research and Development Program to improve capabilities for predicting potential climate-change effects and provide the necessary tools for adaptation and mitigation of potentially adverse impacts.