DOGO Media
Dogo News: Why La Reservoirs Are Covered With Plastic Balls
Read about the shade balls being used to preserve water in drought-stricken Los Angeles. Includes video.
US Geological Survey
Usgs: Earth's Water Surface Water
This site has everything you might want to know about surface water and things you probably didn't even imagine! Click Home to access the site in Spanish.
Science Education Resource Center at Carleton College
Serc: Using Globe Data to Study the Earth System
This lesson guides students through the process of locating and graphing web-based environmental data that has been collected by GLOBE Program participants. The lesson provides opportunities for using GLOBE data to introduce basic...
US Geological Survey
Usgs: Effects of Human Activities
This site reviews the effects of agricultural development, urban and industrial development, drainage of the land surface, modifications to river valleys, and modifications to the atmosphere have on ground water and surface water.