Definition of headwater in English:

headwater

Syllabification: head·wa·ter
Pronunciation: /ˈhedˌwôtər, -ˌwätər
 
/

noun

(usually headwaters)
  • A tributary stream of a river close to or forming part of its source: these paths follow rivers right up into their headwaters
    More example sentences
    • Swindon's location, so close to the headwaters of the River Thames, does not sit well with the normal sewage treatment works programme that allows some dilution effect to deal with pollution.
    • Rather than gushing down a lush mountainside, the headwaters of the river seen in The Source puddle prosaically beside a suburban high school.
    • Upland valleys and the headwaters of fast-flowing rivers descend to the coast through some of the world's largest swamps.

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