2009/12/8 David Fawcett <[email protected]>: > I have a few questions on best/standard practices for delineating > coastlines and tagging the features. > > 1. Is there general agreement on where the primary water body ends > and a contributing river starts?
Last I heard it was a judgement call. Dependant upon Tidal Water end, Bridges, Current, Man made Structures etc. and also when people generally stopped calling it the "Sea" and started calling it the "River", > > I am thinking of an area where the PGS data cuts a large bay/estuary. > The line was defined by a bridge crossing the water, my assumption is > that this line was chosen because the bridge was incorrectly > interpreted as land. Ocean-going ships pass under this bridge to the > water behind it. > > 2. Coastline delineation around structures. Based on reading old > posts and wiki pages, it seems like the general practice for solid > structures, like harbor walls and jettys is that the coastline follows > the edge of these features and then an additional area is defined to > delineate the structure itself. > > For piers, constructed on pilings where water flows through the > pilings, should the coastline follow the solid shoreline, or should it > follow the outline of the pier? I guess, is coastline determined > based on navigability or by the ability of water to flow? > > Any input would be great. > Its the Flow of Water that counts. so the coastline does not include any piers bridges that over hang. This is what I understood after the last thread on this on Talk. Peter _______________________________________________ Tagging mailing list [email protected] http://lists.openstreetmap.org/listinfo/tagging
