Nope, it's 100% OpenStreetMap data. *(I made WaterwayMap.org)* | Hacker News

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		rmc on Jan 24, 2024 \| parent \| context \| favorite \| on: Waterway Map Nope, it's 100% OpenStreetMap data. (I made WaterwayMap.org)

matkoniecz on Jan 24, 2024 [–]

OSM has some NHD imports.

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