Ground water is water beneath the surface of the earth.
Ground water accumulates chiefly from rain that filters through the soil. It also forms from water that seeps into the ground from lakes and ponds. The water settles into the pores and cracks of underground rocks and into the spaces between grains of sand and pieces of gravel. SSG has a long tradition of excellence in providing and supporting hydrology, geology, air pollution, bioremediation, and other environmental software products. Enter the Scientific Software Group World Wide Web Site to view our catalog of over 100 ground water, surface-water, air pollution, geology, and other environmental software.