Reference Material
Water Resources
- USGS Water Science for Schools
- How Much Water Does America Use Every Day? (Publication by USGS)
- Water Use in the United States
- Water Use at Home Q&A
- Water on Tap: A Consumer's Guide to the Nation's Drinking Water
- EPA Office of Ground Water & Drinking Water
- Eco Student Resources for students and teachers
- Surf Your Watershed
- WaterWiser
- Environment Canada: Water Efficiency/Conservation
- U.S. Water News Homepage
- Water: Use It Wisely
- The Groundwater Foundation Kids' Corner
Unit Conversion Calculators
- Easy Unit Converter
- Online Conversions - Conversions for just about everything
- Calculator.com
Latitude Longitude and Time Zone Information
- Understanding Maps and Latitude & Longitude
- FAQs: Latitude and Longitude
- World map showing major lines of latitude and longitude
- Map of major lines of latitude and longitude (smaller)
- Geographic Name Server Includes mostly U.S. cities but some foreign cities
- How Far is It? Enter place name in "From" section. Will give latitude and longitude for most world wide locations.
- U.S. Census Bureau Gazetteer Gives latitude and longitude of U.S. cities in decimal format
- Latitude and Longitude Information Shows how to convert from degrees:minutes:seconds to decimals.
- World Time Zone Map
