US Geological Survey
Usgs: Earth's Water: Lakes and Reservoirs
The USGS reviews the differences between lakes and reservoirs. They discuss the history of freshwater and salt water lakes. Click Home to access the site in Spanish.
US Geological Survey
Usgs: Ground Water Aquifers
Resource is a brief explanation of an aquifer and how they work. This article also touches upon artesian wells. A picture and a fun activity to illustrate the concept of an artesian well are included. Click Home to access the site in...
US Geological Survey
Earth's Water: Rivers and Streams
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.