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U.S. Watersheds, a map | Hacker News Reader
U.S. Watersheds, a map
assets.atlasobscura.com
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MaysonL
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thomas
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Super cool! You can see how that becomes drinking water, by region or zip code at
https://mytapwater.org/
or
https://www.ewg.org/tapwater/
Reply on news.ycombinator.com