+1I want to calculate upstream and downstream distances along river polylines between barrier points.
I’ve got as far as generating a topologically correct river network divided at barrier locations, river intersections and junctions complete with network_id.
I’m stuck on the next steps! The main challenge is what to do upstream when a river branches out.
Any help would be greatly appreciated!
+10Hej!
It would be helpful with some more visual context and at which exact places you are struggling to achieve your task. I think you are on a good path to establish the principle, though! Just make sure you check linear integrity of dataset for topological breaks/faults before splits and ID setting for analysis.
+1Hej :)
Basically I am not sure what the next step is to calculate the distances between barriers up and down stream! I need a way of grouping together river sections between barrier points and calculating the total length. I want to include the total length of river between barriers, even where the river divides.
I think my process so far is successful in ensuring the network dataset is clean for analysis…!
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