Visit the U.S. Geological Survey's website for a wide variety of information on water. Content includes data on water quality, water use, acid rain, among others; publications; information on water resource programs; maps; information on...

This site from the U.S. Geological Survey is an extremely thorough source of information for mineral and industry commodity research pertaining to antimony.

This website offers three activity centers: Questionnaires, Opinion Surveys, and Challenge Questions. Take a look at these interesting water research activities from the US Geological Survey. Click Home to access the site in Spanish.

The USGS & National Park Service provide a description of the difference between weathering and erosion, and the difference between chemical and mechanical weathering.

Illustrated, step-by-step directions on how to build a birdhouse for a bluebird or other similar species.

This resource from the United State Geological Survey provides data about San Francisco Bay's water quality. Data is displayed in time series plots, vertical profiles, longitudinal sections, space and time contours, and x-y scatter plots.

This U.S. Geological Survey website offers one explanation of why the ocean is salty. Click Home to access the site in Spanish.

The USGS explains the definition of a river and how a river is supplied with water. Included is a cross section of a river. Click Home to access the site in Spanish.

Learn about the importance of water quality and environmental influences that reduce it.

A comprehensive series of pages that answers a number of commonly asked questions about dinosaurs.