The purpose of this report is to describe the role of science in support of emerging issues and practices in the management of ground-water resources. Seven case studies are presented to demonstrate how datacollection networks, ground-water resource assessments, ...

The purpose of this Circular is to illustrate the hydrologic, geologic, and ecological concepts that must be considered to assure the wise and sustainable use of our precious ground-water resources.

This Circular presents an overview of current understanding of the interaction of ground water and surface water, in terms of both quantity and quality, as applied to a variety of landscapes across the Nation.

This Circular presents an overview of current understanding of the interaction of ground water and surface water, in terms of both quantity and quality, as applied to a variety of landscapes across USA