| Answer | Crossword Clue |
|---|---|
| SINKHOLES | Water-created depressions |
| backwash | A backward current of water or air created by the motion of an object through it |
| contrail | streaks of condensed water vapor created in the air by an airplane or rocket at high altitudes |
| millponds | The pool that is created by a milldam and provides the head of water that powers a water mill |
