This USGS report presents an overview of the interactions between ground water and surface water in a variety of terrains. It serves as a general educational document with the intention of helping agencies understand the basic science involved in the management and protection of aquifers and watersheds. The report describes the natural processes of ground water and surface water interactions and the ... Full description.

This is the official website for the Office of Groundwater and Safe Drinking Water (OGWDW) at the Environmental Protection Aagency (EPA). The OGWDW works to ensure safe drinking water and to protect the quality of our nation's drinking water supply. This mission is accomplished using five guiding principles: prevention, risk-based priority setting for new and existing regulations, public and private ... Full description.

The MYPond project is an investigation of the chemical reactions, biological processes and inflow/outflow balances found within a pond environment. Instrumentation has been established in two ponds near each other so that a variety of chemical and physical properties are measured at various depths at 15-minute time intervals. Data can be viewed either in real-time or accessed from an archive, and ... Full description.

The Deep Biosphere Laboratory at Goteborg University consists of about 10 people whose unifying interest is in microbial life in underground and sub-seafloor environments. Visitors to the site can access summaries of research projects, personnel information, and links to publications on the topic of underground and sub-seafloor microbes. Research topics include microbes in deep Swedish and Finnish ... Full description.

Using paper patterns, students are able to construct a model that depicts Karst topography, including typical features such as caves, limestone bedrock, sink holes, and springs. The accompanying Teachers Guide provides extensive background information about the dissolutional processes that form caves. Information is also provided about unique animals found in caves and the importance of understanding ... Full description.

Classroom activities based on how scientists study active volcanoes on the deep ocean floor. Activities include: locating an earthquake epicenter, recording geological and biological information during an ocean floor traverse, creating cross-section profiles of the ocean floor, and graphing seafloor data. Resources include videos and teacher guides. Full description.

This is a Web-based story of three children who venture out to find their great-grandfather-s treasure box that was lost in the remote state of Alaska. Using simple terminology, the story integrates complex Earth and Space science concepts, such as the formation of gold deposits and the operation of satellites. The children model creative thinking, acquire and interpret radar images, plan a treasure ... Full description.

This is a fact sheet on the water quality programs directly administered by the USGS. USGS provides information on issues such as the suitability of water for public supply and irrigation, aquatic ecosystem health, effects of agriculture and urbanization on water resources, acid rain, and disposal of radioactive waste. There are hot links to several studies and to data available from USGS and other ... Full description.

BASINS is a multipurpose environmental analysis system for use by regional, state, and local agencies in performing watershed and water quality based studies. This new software makes it possible to quickly assess large amounts of point source and nonpoint source data in a format that is easy to use and understand. Installed on a personal computer, BASINS allows the user to assess water quality at ... Full description.

This activity walks users through a technique for documenting change in before-and-after sets of satellite images. The technique can be used for any set of time-series images that are spatially registered to show the exact same area at the same scale. In the chapter, users examine three Landsat images of the Pearl River delta in southeastern China. In the images, users observe changes in land use ... Full description.