On Wed, Sep 19, 2018 at 5:08 PM Graeme Fitzpatrick <[email protected]> wrote:
> Thinking about how this would apply to other waterways I've mapped, I >> currently map the streams or drains that pass under roads which rainwater >> passes through like below, these are quite similar but with a completely >> different tagging scheme. >> >> waterway=drain or stream >> tunnel=culvert >> layer=-1 >> >> Do we use waterway=* where it is a naturally occurring stream but humans >> earthfilled the location with a concrete culvert and put a road over the >> top but that is still part of the earth's waterways of the creek system. >> Can't be true because waterway=drain is for man made waterways. >> > > That's the way I've always done it as well! To my mind, a stream running > through a culvert is still a natural waterway that we've put a lid over - > if it was a man-made dug out channel, that would make it a drain. > I generally consider a drain to be basically a man-made drainage ditch, otherwise a lot of creeks in the Tulsa Area and...really the entire length of the Los Angeles River, would be a drain, even though they're basically natural streams with concrete-fortified banks.
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