I have just had a correspondence with another mapper who was remapping Lake Mead shorelines to match new imagery. Due to a multi-year drought, Lake Mead and other reservoirs in the west have had significantly declining water levels. However, the lake levels could increase dramatically if there were a couple of years of normal/high water. Alternately, Devil's Lake in North Dakota has had many years of increasing water levels as the closed basin it drains has had relatively high precipitation.
The question I have for y'all is do we have any recommendations for how to map these? For the reservoirs, I think that one could make an argument for mapping the full level and tagging it with landuse reservoir (which is rendered as water), but is there any value in drawing lower lake levels if they persist for many years? Would it be useful to date the imagery/ survey date used for the shoreline? James _______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
