Solve these clues to fill the grid.
- The place where something begins, where it springs into being
- 2 Across
- A long depression in the surface of the land that usually contains a river
- 3 Across
- The point where a stream issues into a larger body of water
- 5 Across
- The United States federal department that institutes and coordinates national ___
- 8 Across
- Long stream of water flowing to the sea
- 10 Across
- A bend or curve, as in a stream or river
- 12 Across
- The world's longest river
- 13 Across
- Clear liquid we drink that falls as rain
- 15 Across
- Furniture you sleep on
- 16 Across
- The natural process of laying down a ___ of something
- 1 Down
- Condition in which the earth's surface is worn away by the action of water and wind
- 4 Down
- The quality of a person's voice
- 6 Down
- A natural body of running water flowing on or under the earth
- 7 Down
- A major South American river
- 9 Down
- A river in Ontario that flows northeast into Hudson Bay
- 11 Down
- A body of water surrounded by land
- 14 Down