| A | B |
|---|
| mesa | a hill with a flat top and steep sides |
| butte | a steep hill of rocks with a flat top |
| rain shadow | the drier side of the mountains |
| cloudburst | a sudden, heavy rain |
| arroyo | deep ditches carved over time by running water |
| aquifer | places in states where there is water |
| reservoir | a human-made lake |
| aqueduct | a large pipe or canal built to carry water |
| irrigation | the use of canals or pipes to bring water to places |
