headwaters

plural of headwater
as in tributary
the beginning part of a stream the first exploration of the Missouri River from its mouth to its headwaters was made by Meriwether Lewis and William Clark in the early 1800s

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of headwaters The headwaters of this 1,400-mile long artery are in the Rocky Mountains, fed by melting snowpack. Laura Paddison, CNN Money, 22 July 2026 Following an exceedingly warm year that has left the Colorado River’s headwaters in the Rocky Mountains largely snowless, Lake Mead is nearing a record-low level. Lila Seidman, Los Angeles Times, 16 July 2026 Its headwaters are in Indian River County, its mouth in the Atlantic near Jacksonville, which is the furthest place Sanders Fish House delivers its wild catch. Amy Drew Thompson, The Orlando Sentinel, 28 June 2026 Grinnell Glacier Trail, Glacier National Park, Montana Covering around a million acres, Glacier National Park provides the headwaters for streams that flow to the Pacific Ocean, the Gulf of Mexico, and the Hudson Bay. Stacey Leasca, Travel + Leisure, 26 June 2026 Lake Assinica in the Broadback headwaters has attracted world-wide attention for its giant squaretails the past two years. Marc Terziev, Outdoor Life, 25 June 2026 Long-term drought fueled by climate change has shrunk the Colorado River’s flows as federal officials and water leaders in the seven basin states — including Colorado, home to its headwaters — struggle to agree on longer-term plans for the river’s management. Elise Schmelzer, Denver Post, 21 June 2026 While the river’s headwaters are near Salem, most of the outfitters are located in Steelville. Kelsey Yandura, Midwest Living, 17 June 2026 These burn areas create barriers around villages, headwaters and sensitive sites, protecting them from wildfires during peak drought. ABC News, 7 June 2026
Recent Examples of Synonyms for headwaters
Noun
  • Under that circumstance, big river basins would have the same proportions as the small river basins that feed the tributaries within them.
    Natalie Wolchover, Quanta Magazine, 10 Aug. 2026
  • Presidio is protected by a series of berms and levees built in the 1970s and 1980s along the Rio Grande and tributaries to combat flooding.
    Rebecca Santana, Los Angeles Times, 4 Aug. 2026
Noun
  • All three Cabinet members were aware that Trump had secretly switched from the old Air Force One jet to the military aircraft given the threat, sources said.
    Katherine Faulders, ABC News, 12 Aug. 2026
  • Officials are investigating the source of the oil, according to Fars News Agency, adding that a clean-up effort was underway.
    Kevin Liptak, CNN Money, 12 Aug. 2026

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Cite this Entry

“Headwaters.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/headwaters. Accessed 15 Aug. 2026.

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