Across
- 3. That branch of hydrology which pertains to surface streams, the science of rivers
- 4. Measures introduced to reduce the amount of water used for any purpose and/or to protect it from pollution
- 5. The drainage basin of a river is called its catchment area
- 6. A hole or shaft, usually vertical, excavated in the earth for bringing ground water to the earth
- 8. The wearing away of land by water, wind, ice or gravity
- 9. Body of land ice formed from recrystallised snow accumulated on the ground that may slowly flow over land
Down
- 1. A moving mass of debris, snow and ice sliding rapidly down a mountain slope
- 2. Water found underground in the cracks and spaces in soil, sand and rock
- 4. The science of ice in all its forms such as snow, ice and hail
- 7. The supply of water to help crops grow