What is the difference between them?
I want to be able to measure automatically, and quickly, the up/downstream distance between multiple sets of points (i.e. sample locations and dams/sewage) on a river network. I cannot believe how difficult it is to figure out what the right tool is for the task, or if such a tool exists.
Here's what I think I've figured out:
1) A geometric network (which is managed using the Utility Network Analyst and/or Network Analyst???) can store a permanent flow direction like I would need for a river network. But in order to calculate flow distances I have to manually click on the network, I can't do this for a feature class of a couple hundred points.
2) Using linear referencing I should be able to calculate these distances.
3) Linear referencing requires a Network dataset.
4) A network dataset does not contain built-in/permanent (flow)direction like a geometric network.
Am I anywhere near right?