Across
- 3. = Supplying water to crops
- 7. = Waste water from homes or factories
- 8. = Light produced by water organisms
- 10. = Area that drains into a river
- 13. = Water stored under the Earth's surface
- 14. = A large mass of ice moving slowly
- 15. = Natural source of groundwater
Down
- 1. = Water vapor turning into liquid
- 2. = Flat area prone to flooding
- 4. = Underground layer that stores water
- 5. = Land saturated with water, like a marsh
- 6. = Any form of water falling from clouds
- 9. = Landform at river mouth formed by sediment
- 11. = Salt content in water
- 12. = Long period without rain