New York State. Department of Environmental Conservation.
This is an index to Large scale hydrography network tiled by HUC-8 sub-basin boundaries. Stream network extracted from New York State Large Scale Hydrography. Artificial paths and connectors added as needed to create a continuous network. Stream names from USGS 7.5 Minute Topographic Maps. Continuous hydrography network for mapping and modeling. Base data for creation of high resolution National Hydrography Dataset (NHD).