On 1/7/16 3:12 PM, Elliott Plack wrote: > Greetings, > > What are the current accepts best practices for determining where to > "cut off" the coastline and to begin a river or bay type feature? The > wiki seems to be in disagreement about this, and I've read chatter > about switching to ocean polygons. > > Let's take the mighty Potomac River. It is tidal from the mouth to > points upstream from Washinton, DC, yet at some point it switches to > waterway areas and relations. Would it be appropriate to transition > the entire river to a multipolygon and end the ocean at the mouth? > Perhaps the whole Chesapeake Bay should be upstream from the > coastline. Anyone ever try converting this massive coastline areas? > What are the best practices? the Hudson is tidal all the way up to Albany, so that doesn't seem like a reasonable threshold.
tidal doesn't mean salt, by the way. it simply means that the water level is impacted by tides. in the case of the Hudson, there's a standing wave from the actual mouth of the river up to the first dam at Troy. richard -- rwe...@averillpark.net Averill Park Networking - GIS & IT Consulting OpenStreetMap - PostgreSQL - Linux Java - Web Applications - Search
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