This applet provides a simulation of the type of precipitation that results from adjusting the temperature (dry bulb and wet bulb) at different altitudes. An updraft in the cloud can be produced in order to see its...

This is a resource from the Geological Survey of the United States dealing with rainfall and runoff. The resource provides a description of runoff and the factors that impact the amount of rainfall runoff for a...

This Topic in Depth is about cloud seeding, a type of weather modification in which substances, such as silver iodide or dry ice, are added to the air in order to produce changes in the weather. Cloud seeding is...

In arid climates, such as the Southwestern United States, "rainfall is scarce and evapotranspiration rates are high." This type of climate often makes the practice of "water harvesting" necessary for sustaining plant...

Students use skills gained from the Web-based GIS tutorial to explore the Willamette Watershed in Oregon. A correlation will be found between types of trees and the riparian zone along the McKenzie River. Population in...