Encyclopedias, Almanacs, Transcripts, and Maps
- Water Rights
- Water Table Draw-Down
- Water, Weather, and Climates
- Water: Environmental Issues
- Water: History and Culture
- Water: Legal and Political Issues
- Water: Science and Research
- Water: Science and Technology
- waterbuck
- Waterkeeper Alliance
- Waterlogging
- Watershed Management
- Watersheds
- Watt, James (1736–1819)
- Watt, James G. (1938 – ) American Former Secretary of the Interior
- Watts, George Frederick
- wave amplitude
- wave dispersion
- Wave Energy
- wave frequency