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headwaters

American  
[hed-waw-terz, -wot-erz] / ˈhɛdˌwɔ tərz, -ˌwɒt ərz /

plural noun

  1. Sometimes headwater the upper tributaries of a river.


headwaters British  
/ ˈhɛdˌwɔːtəz /

plural noun

  1. the tributary streams of a river in the area in which it rises; headstreams

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of headwaters

1525–35; head + waters, plural of water

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The treaty governs the use of water from six rivers, whose headwaters originate in India but flow into Pakistan as part of the Indus basin -- a resource relied on by hundreds of millions.

From Barron's Aug. 31, 2026

The "Walcot Wiggle" is taking place within the headwaters of the River Clun - parts of which support internationally important species like the freshwater pearl mussel.

From BBC Jul. 1, 2026

On land the Maidu call Tásmam Koyóm, 2,000 acres near the headwaters of the Feather River, seven beavers joined a single resident in October 2023.

From Los Angeles Times Jan. 7, 2025

The water that flows into the North Fork Reservoir, which serves Asheville and the towns of Black Mountain and Swannanoa, always ran clear and clean from its headwaters high in Pisgah National Forest.

From Salon Nov. 25, 2024

By the time the expedition reached the headwaters of the River of Doubt, Roosevelt knew who had the best chance of surviving the journey.

From "Death on the River of Doubt" by Samantha Seiple

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