Email a USGS scientist your question on volcanoes, earthquakes, tsunamis, mountains, rocks, maps, ground water, lakes, rivers, even some biology. Explore the USGS website and the Frequently Asked Questions section to see...

The United States Geological Survey (USGS) presents the most common water measurements in science. These include: temperature, pH, specific conductance, turbidity, dissolved oxygen, hardness and suspended sediments. The...

This portal provides access to a large selection of real-time and archived data on stream flow and water quality for surface and groundwater. Links are provided to the National Water Information System Web Interface...

In this activity, students will familiarize themselves with ground water terminology, learn how hazardous materials contaminate ground water, and interview a professional working on problems of ground water...