Contours - 2 of 12

Contours FAQs - 12 Found

What sources of elevation data were used to create contours?

The 500- and 100-foot contours were derived from the National Elevation Dataset (NED) one arc-second resolution data, which was sub-sampled to a cell size of three arc-second.  The 50-foot contours were also derived from NED one arc-second data.  Large scale contours were derived from the NED 1/3 arc-second resolution data for US Topo products.

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