Water

5. a watershed characteristics that controls the rainfall distribution and movement.
6. a device used for raising and lowering boats, ships and other watercraft between stretches of water different levels on river and canal waterways.
7. a structure that allows water to flow under a road, railroad, trail or similar obstruction from one side to the other side.
8. a sliding gate or other device for controlling the flow of water, especially one in a lock gate.
10. generally most suitable in hilly area where deep valleys are available which gives a deep storage of water
13. useful where water table is shallow, also called horizontal wells
15. a small to moderate depression created to channel water.
17. a rigid hydraulic structure built from an ocean shore that interrupts water flow and limits the movement of sediment.
18. a narrow shaft bored in the ground either vertically or horizontally
19. a temporary structure designed to keep water or/and soil out of the excavation in which bridge pier or other structure is built
20. an elongated naturally occuring ridge or artificially constructed fill or wall which regulates water levels

1. also known as percussion drilling or spudding
2. portion of the earth's water cycle that flows underground
3. the flow of water through soil and porous or fractured rock.
4. usually built to preserve the existing uses of the shoreline and to protect the slope as defense against erosion
9. a cyclic water pump powered by hydropower
11. an excavation or structure created in the ground by digging, driving, boring, or drilling to access groundwater in underground acquifers.
12. the most common and traditional method of obtaining groundwater in rural areas of the developing world
14. a decline in land-surface elevation caused by removal of subsurface support which is a result from a variety of human activities.
16. it is a watershed characteristics that decides the quantitative approach.