head·​wa·​ter | \ ˈhed-ˌwȯ-tər How to pronounce headwater (audio) , -ˌwä-\

Definition of headwater

: the source of a stream usually used in plural

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Synonyms for headwater


head, headstream, source

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Examples of headwater in a Sentence

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

Recent Examples on the Web

This admission free event overlooks the picturesque Susquehanna River and headwaters of the Chesapeake Bay. Rachel Steffan, baltimoresun.com, "Something for everyone at Havre de Grace Art Show this weekend," 14 Aug. 2019 The commission bought up property along the river valley and created a landscaped autoroute leading to the headwaters in Westchester County. Ian Frazier, The New Yorker, "When W. E. B. Du Bois Made a Laughingstock of a White Supremacist," 19 Aug. 2019 This is the pay-off for a snowpack at the headwaters of the Tuolumne that measured 149% of normal for May 1, the last of the official snow course readings. Tom Stienstra, SFChronicle.com, "Cherry Lake a testament to NorCal lakes," 8 Aug. 2019 Decades ago, researchers seeded the headwaters of two streams in the mountainous country with guppies taken from a distant habitat. Elizabeth Pennisi, Science | AAAS, "Boosting genetic diversity may save vanishing animal populations. But it may also backfire," 16 July 2019 The mighty Mississippi rises gently here at its headwaters in northern Minnesota, before meandering past Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana, and empties into the Gulf of Mexico. CBS News, "A trip down the mighty Mississippi," 7 July 2019 The Upper Lost Man trail, which is located in the headwaters of the Roaring Fork River, is one of the most popular hiking trails in the area. John Meyer, The Denver Post, "Snowmobilers ride on fragile Independence Pass tundra despite a lack of snow, spark concern," 17 July 2019 Historically, fresh water flowed smoothly into the bay from the Everglades’ headwaters near present-day Orlando. Kate Stein, Scientific American, "Climate Change Throws a Wrench in Everglades Restoration," 21 June 2019 That water comes from the headwaters of the fast-moving Crystal River, which drains from a glacial valley and is mainly filtered through Yule marble. Connie Baker, Popular Mechanics, "This Zero-Waste Distillery Saves 4 Million Gallons of Water Per Year—and Still Makes Delicious Stuff," 9 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'headwater.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of headwater

1612, in the meaning defined above

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Last Updated

14 Sep 2019

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Time Traveler for headwater

The first known use of headwater was in 1612

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Rhyming Dictionary: Words that rhyme with headwater

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Comments on headwater

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readily or continually undergoing change

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