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In Potlach2 I have been changing a river(line) to a riverbank(polygon) in the rivers wider sections. I move the river to one bank and often using "f" to follow (whats available) to help one bank and drew other bits. the main niggle it looks like a polygon but I haven't got the river bank/lake closed way option any tips

asked 12 May '11, 10:30

andy%20mackey's gravatar image

andy mackey
accept rate: 4%

Don't move the river way. Even rivers where the river banks are mapped should have a waterway=river way as centerline.

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answered 12 May '11, 10:45

petschge's gravatar image

accept rate: 21%

thanks after some thought i guessed to keep the continuity of the way that may be the case

(12 May '11, 11:27) andy mackey

The flowline of a waterbody will often be what people are interested in using rather than it's surface area. Questions like "How long is River X?" can't be answered trivially if there is not a flowline. The direction of flow is not available from a riverbank polygon either. If I wanted to do a hydrographic simulation you've removed the most important data.

(12 May '11, 11:48) SK53 ♦

I have re-instated the river line as advised and drawn in a separate bank polygon which more clicks but creates less problems thanks both of you

(12 May '11, 12:00) andy mackey

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question asked: 12 May '11, 10:30

question was seen: 4,733 times

last updated: 12 May '11, 12:00

NOTICE: is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum