head·​wa·​ter ˈhed-ˌwȯ-tər How to pronounce headwater (audio)
: 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 With the exception of the Colorado headwaters and Arizona’s Verde River, most areas of the seven-state watershed experienced below-average April snow and rain, according to the Colorado Basin River Forecast Center. Brandon Loomis, The Arizona Republic, 16 May 2024 The state hugs 45 miles of Lake Michigan’s shoreline and is home to the headwaters of the Maumee River, which flows into Lake Erie and is the largest river basin in the Great Lakes. Caitlin Looby, Journal Sentinel, 13 Feb. 2024 The subtitle of the book refers to the Appalachians as a geologic province of the vast Chesapeake Bay watershed, with major rivers having headwaters there. Dan Rodricks, Baltimore Sun, 5 Apr. 2024 In the highlands of the southern Amazon rainforest, the heavy rainfall creates the headwaters of a vast river system, connecting the deepest reaches of the forest through water. Irene Wright, Miami Herald, 22 May 2024 See all Example Sentences for headwater 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'headwater.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1612, in the meaning defined above

Time Traveler
The first known use of headwater was in 1612

Dictionary Entries Near headwater

Cite this Entry

“Headwater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headwater. Accessed 20 Jun. 2024.

Kids Definition


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