The development of hydrogeology with respect to hard-rock and fractured-rock aquifers is described. differences between porous karst are explained, as well the groundwater flow regimes in different fractured rocks. A position taken on numerical modeling, from beginning modeling present day, focus particular challenges. Because importance aquifers, tools for exploration future resource managemen...

a book review is presented on numerical simulation of groundwater flow and solute transport, edited by l. elango, published by allied publishers pvt. ltd. in 2005, 245 pp, hardback isbn 81-7764-923-x.

A study using multiple techniques provided insight into tectonic influences on ground water systems; the results can help to understand ground water systems in the tectonically active western United States and other parts of the world. Ground water in the San Bernardino Valley (Arizona, United States and Sonora, Mexico) is the main source of water for domestic use, cattle ranching (the primary ...