Across
- 4. Uppermost layer of dirt & sediments
- 6. Large natural or artificial lake used as a water source
- 7. Porous rock that water can flow through
- 8. Permeable rock through which groundwater flows
Down
- 1. Nonporous rock that prevents flow of water
- 2. Layer of dirt & sediment beneath topsoil, consisting of clay & rocks
- 3. The highest level that water reaches in a given area
- 5. Shaft sunk into the ground to obtain water
- 6. Where water seeps through the ground to replenish aquifers