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 Large Scale Hydrography

The New York State Large Scale Hydrography dataset contains information about surface and network water features such as lakes, ponds, streams, rivers, springs and wells. The NYS Large Scale Hydrography dataset is similar to National Hydrography Dataset (NHD) data in that it is tiled by subbasin and is networked (has center lines and connectors to represent continuous linear flow). NHD also includes a flow table, reach codes, and many other features the NYS Hydrography Network does not yet have.