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How to sum points on a line and add value to the line attributes?

Question asked by dmede on Nov 10, 2011
Latest reply on Dec 7, 2011 by dlee-esristaff
I have what is probably a simple operation to complete in Arc but am unsure of the exact functions or tools to use.

I have two feature classes, a set of points (dam locations) and a set of lines (river network). For each section of river I want to add an attribute that is the sum of all dams on that section of river.

This seems like a simple operation but I can't quite figure it out in Arc. A spatial join will give me overlapped rerecords for each line-point combination (if one-to-many), but the collect-events tool is for points only so not sure how to recombine the lines and sum the number of points.

Any help is appreciated,