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Many Western/Central Canadian Rivers being incorrectly aggregated into St. Mary's River/Red River of the North

Open sdl60660 opened this issue 3 years ago • 2 comments

Describe the data problem More detail in this issue on the frontend repo: https://github.com/sdl60660/river-runner/issues/28. Many rivers in western/central Canada seem to be over-aggregated and incorrectly assigned to a few particular features (St. Mary's River, Red River of the North, Rainy River). Oftentimes, this seems to be linked to name changes that occur after a large inland feature (opposed to a confluence).

To Reproduce https://river-runner-global.samlearner.com/?lng=-92.93021070&lat=48.668974499

Suggested fix The commenter in the linked issue submitted a table of suggested fixes, but the issue here appears to be a larger systemic issue that probably won't be easily remedied by making one-off fixes.

sdl60660 avatar Jan 24 '22 04:01 sdl60660

I think I see what's wrong. Should be fixable actually. Application of NHDPlus US names looks like it was a little overzealous.

dblodgett-usgs avatar Jan 25 '22 01:01 dblodgett-usgs

OK, so the naturalearth name is now over being used outside the US. See the image below - just north of the boarder, it's just "Red" and not "Red River of the North" as is the name south of the boarder in the NHDPlus.

image

dblodgett-usgs avatar Jan 30 '22 03:01 dblodgett-usgs