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Waterway Map

waterwaymap.org

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Re: Waterway Map

#31
Who mapped these? In New Mexico we have a ton of dry arroyos that maybe have a couple inches of flowing water a few times a year. Zooming in at places I'm familiar with, a surprising number of them are mapped. I know of rez roads[1] nearby that aren't on OSM or any map I know of, but the ditch we used for cross country practice is. Wild!

[1] Two-track dirt roads on the Navajo Reservation that are not regularly maintained, or officially numbered/named but which are actively used.

Re: Waterway Map

#32
post #31

Who mapped these? In New Mexico we have a ton of dry arroyos that maybe have a couple inches of flowing water a few times a year. Zooming in at places I'm familiar with, a surprising number of them are mapped. I know of rez roads[1] nearby that aren't on OSM or any map I know of, but the ditch we used for cross country practice is. Wild! [1] Two-track dirt roads on the Navajo Reservation that are not regularly mainta…

You can go to https://openstreetmap.org/ , zoom in and enable the map data layer. History is accessible from the object pages.

Re: Waterway Map

#33
post #27
post #5

When I was young, my grandfather talked about the possibility of taking his boat from his home in central Florida all the way to the coast. 40+ years later, this fills me with delight. He could have done it.

Definitely not all of these waterways are navigable. There are even underground ones, essentially pipes.

Right. Like trails in the woods, they shift and evolve.

Re: Waterway Map

#34
post #2

The "Navigable by canoe" filter seems to filter out everything, which is a bummer, because I've always wondered how far up into the Sierras I could drop a canoe and still be able to paddle back to the bay area.

The "Navigable by canoe" filter seems to filter out everything Selecting "Rivers" shows an awful lot of dry gulches and alluvial fans that haven't had water in them in half a century or more.

Is there a "drag canoe" option?

Re: Waterway Map

#35
post #31

Who mapped these? In New Mexico we have a ton of dry arroyos that maybe have a couple inches of flowing water a few times a year. Zooming in at places I'm familiar with, a surprising number of them are mapped. I know of rez roads[1] nearby that aren't on OSM or any map I know of, but the ditch we used for cross country practice is. Wild! [1] Two-track dirt roads on the Navajo Reservation that are not regularly mainta…

Sometimes waterway maps include calculated flowlines. These are algorithmically derived from digital elevation data and more accurately represent where water would flow were there water flowing. That's really important not just for New Mexico arroyos but for most of the surface of the earth; there are a lot more flowlines than perennial streams.

I don't know the provenance of this data though. It's pretty spotty, I don't think someone just imported the NHD flowlines dataset or something.

Re: Waterway Map

#36
post #31

Who mapped these? In New Mexico we have a ton of dry arroyos that maybe have a couple inches of flowing water a few times a year. Zooming in at places I'm familiar with, a surprising number of them are mapped. I know of rez roads[1] nearby that aren't on OSM or any map I know of, but the ditch we used for cross country practice is. Wild! [1] Two-track dirt roads on the Navajo Reservation that are not regularly mainta…

In the USA, this is likely sourced from the National Hydrography Dataset:

https://www.usgs.gov/national-hydrography/national-hydrograp...

Re: Waterway Map

#37
post #8
post #2

The "Navigable by canoe" filter seems to filter out everything, which is a bummer, because I've always wondered how far up into the Sierras I could drop a canoe and still be able to paddle back to the bay area.

You have both hills and urban areas blocking about the whole east side of San Francisco Bay. Hard for me to imagine being able to get through that. And further north you've got the Central Valley.

Even cargo ships go all the way to Stockton and Sacramento.

Re: Waterway Map

#38
post #2

The "Navigable by canoe" filter seems to filter out everything, which is a bummer, because I've always wondered how far up into the Sierras I could drop a canoe and still be able to paddle back to the bay area.

> how far up into the Sierras I could drop a canoe and still be able to paddle back to the bay area

I've thought of doing this, I wonder if there are any good resources on best paths to take.

Re: Waterway Map

#40
post #22

The Yucatan peninsula in Mexico is very interesting here, completely empty of waterways which would make one think it's a dessert area per other similar areas of the map, yet it's a very lush tropical jungle. A ton of water yet all of it runs underground, cenotes [0] are (mostly) undergound sinkholes, amazing to swim in [0] https://en.wikipedia.org/wiki/Cenote

Fun fact about cenotes: most of them were formed from the geologic upset that followed the asteroid that wiped out the dinosaurs 65Mya
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