| Answer | Crossword Clue |
|---|---|
| wellhead | the source of a spring or stream |
| wellheads | WELLHEAD, the source of a spring or stream |
| fountainhead | a spring that is the source of a stream |
| headsprings | A spring that is the main source of a stream |
| fountainheads | FOUNTAINHEAD, a spring that is the source of a stream |
| headspring | A spring that is the main source of a stream |
| perennial | (of a stream or spring) Flowing throughout the year |
| fountainhead | The headwaters or source of a stream |
| fountainheads | The headwaters or source of a stream |
| upstream | Moving or situated in the opposite direction from that in which a stream or river flows; nearer to the source |
