Locate Features Along Routes - Linear Input Features

Hi,

I have linear routes with M values (pipelines) and a linear layer of rivers. I want to use Locate Features Along Route to determine the location where the rivers and pipelines intersect.

How come I have to set a search radius? The rivers and pipelines clearly intersect at many locations. That's all I want, I'm not concerned with areas where they come close.

Even when I set a search radius (one metre), it returns far fewer values than I expect. And of course, each record has a "from" and "to" value, neither of which actually represent the intersection.

PS: I'm running 10.1.

Thanks,