The US Geological Survey (USGS) has a wonderful Web site for teachers to use to learn all about water, the Water Science School (http://water.usgs.gov/edu/). Science teachers in New Hampshire should know that this resource exists for them to use.
A newer section is about the Water Cycle, especially made for 3 levels of school students.
Each features a great diagram and also an Interactive Section where a student can mouse hover over sections of the diagram and get popup information and pictures about that topic, along with links to more information. All of this is available for 3 different age levels. And, the diagram is available in over a dozen languages, including Spanish!
Main diagram: http://water.usgs.gov/edu/watercycle-kids.html
Interactive Center: Beginner: http://water.usgs.gov/edu/watercycle-kids-beg.html