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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.

Beaver officer Lauren Jasper said the sites were chosen because they offered strong habitat at the headwaters, good damming potential and an existing local flood risk.

From BBC • Mar. 14, 2026

As bodies of water, rivers already have headwaters, mouths and arms.

From Los Angeles Times • May 15, 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

"The issue is slowly propagating from small headwaters into bigger rivers over time," he said.

From Science Daily • May 21, 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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