headwater

noun

head·​wa·​ter ˈhed-ˌwȯ-tər How to pronounce headwater (audio)
-ˌwä-
: the source of a stream
usually used in plural

Examples of headwater in a Sentence

the first exploration of the Missouri River from its mouth to its headwaters was made by Meriwether Lewis and William Clark in the early 1800s
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Tie money to measurable results and sound governance, and benefits can travel from headwater villages to port cities linked by trade. William Jones, USA Today, 6 Nov. 2025 The headwaters of the Big Thompson River snake across an emerald plain, past beaver dams and aspen groves and toward the highest peaks of the Front Range. Frederick Dreier, Outside, 23 Oct. 2025 Biologist Fabiola ‘Fabby’ Baeza-Tarin and an unexpected team work together to protect the sparrows, their shrinking habitat and the headwaters of the Everglades. Matthew Carey, Deadline, 13 Oct. 2025 The Russell-Brasstown Scenic Byway is a looped route, one that meanders through the Chattahoochee National Forest and encircles the headwaters of the Chattahoochee River. Lydia Mansel, Travel + Leisure, 4 Oct. 2025 See All Example Sentences for headwater

Word History

First Known Use

1612, in the meaning defined above

Time Traveler
The first known use of headwater was in 1612

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Cite this Entry

“Headwater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headwater. Accessed 17 Nov. 2025.

Kids Definition

headwater

noun
head·​wa·​ter -ˌwȯt-ər How to pronounce headwater (audio)
-ˌwät-
: the beginning and upper part of a stream
usually used in plural
Last Updated: - Updated example sentences
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