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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 "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

Its life cycle includes a journey of 11,000 kilometers from Andean headwaters to coastal nursery areas.

From Science Daily Mar. 26, 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

Several hundred years later it reached the upper Xingu, a long Amazon tributary with its headwaters deep in southern Brazil.

From "1491" by Charles C. Mann

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