headwaters

American  

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

plural noun

1. Sometimes headwater the upper tributaries of a river.

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headwaters British  

/ ˈhɛdˌwɔːtəz /

plural noun

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

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Etymology

Origin of headwaters

1525–35; head + waters, plural of water

Example Sentences

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

From Science Daily • Mar. 26, 2026

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

But now, while he sat in a heavy wooden dugout made from a huge, hollowed-out tree trunk on the headwaters of the River of Doubt, Roosevelt was worried.

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