Hi all I've been doing quite a bit of stream and catchment delineation from lidar lately for some capability demonstration / bizdev projects / fun cartography. This next bit is probably preaching to the converted, however I haven't seen it discussed...
Something to remember is that strahler order often used to make "bigger streams" is a measure of connectivity rather than importance. Like, a significant stream can have the same strahler order as a tiny trickle. In waterwaymap.org, it looks like this happens a bit (sudden jumps in stream width etc). Having said that I haven't looked into how the widths are computed. A possibly obvious contribution is that streams from a 10m DTM will be different from streams made with a 2m DTM. I also wonder if computing stream power (or some related metric) might also help? Thinking about rendering in terms of how much water might come here. HTH. All sounds great, I just haven't been brave enough to change river locations in OSM yet! Cheers, Adam
_______________________________________________ Talk-au mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-au
