Readit NewsWhat's interesting and somewhat amusing is that this map has determined that the section of the Soar that joins with the Trent just north of Loughborough is apparently unnavigable. This time of year I'd generally agree.
> What's interesting and somewhat amusing is that this map has determined that the section of the Soar that joins with the Trent just north of Loughborough is apparently unnavigable
The boat views only use the OpenStreetMap `boat` tag. If a section of river is missing from WWM.org, then it's likely the tag is missing from the OSM waterway. You can fix that!
Some things I noticed after a few minutes:
- A lot of smaller rivers system and tributaries seem not to be connected all the way through as seeing smaller disconnected systems with shorter total lengths.
- small rivers that and at the shore geometry of larger rivers but are not connected to the main centerline
- some streams are disconnected by other waterbodies where they should not be, as there seems to be little consensus on how to connect waterways through lakes and other waterbodies, having an unnamed waterway along the centerline connect through the named lake seems to be a good compromise to not mess up rendering but helps with linking up topologies.
https://help.openstreetmap.org/questions/52843/does-the-rive...
> some streams are disconnected by other waterbodies where they should not be, as there seems to be little consensus on how to connect waterways through lakes and other waterbodies
Yeah, the OSM community is still discussing this: https://community.openstreetmap.org/t/should-river-lines-be-...
Not the dev's fault of course.
I've noticed a similar difference of how rock formations are recorded at state line boundaries on USGS maps.
Dealing with different datasets from different bureaucracies is an intractable problem.
My example is the river Neckar close to Heidelberg in Germany. The number there is:2595963 km
In reality the length of each river is measured from it's estuary. For bigger waterways in Germany you see a sign every kilometer with a number. The number is the distance in kilometers to the estuary of that waterway.
Correct.
(I made WaterwayMap.org)
The data is 100% from OpenStreetMap. That map only looks at things with the `canoe` tag in OSM. There are a lot of waterways in OSM which do not have this tag. If you know of missing data, you can just edit OSM and it'll show up on WWM.org tomorrow!
(I made WaterwayMap.org)
https://www.usgs.gov/national-hydrography/national-hydrograp...
(I made WaterwayMap.org)