(n.) The source and upper part of a stream; -- commonly used in the plural; as, the headwaters of the Missouri.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). headwater. Retrieved September 20, 2026, from http://smartdefine.org/headwater/definitions/2015409 |
| Chicago | Webster's. 2011. "headwater" http://smartdefine.org/headwater/definitions/2015409 (accessed September 20, 2026). |
| Harvard | Webster's 2011, headwater, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/headwater/definitions/2015409>. |
| MLA | Webster's. "headwater" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/headwater/definitions/2015409> |