/July 1999/ *The Networked Hydro Centerlines layers were developed for use with the **now-discontinued **Watershed Analyst extension that was used in ArcView 3.x. * Download the Centerlines layers ESRI shapefiles and SARIS lookup table (30 MB...
/December 2019/ Download these layers [1] (.Zip file with Shapefiles and ArcGIS 10 LYR file) MassGIS has adapted and modified the U.S. Geological Survey 1:100,000 Hydrography Digital Line Graph (DLG) [2] quadrangle files to produce two layers...
November 1998 *This statewide point datalayer represents active and discontinued stations at which USGS collects or had previously collected streamflow data.* Download this layer (ESRI Shapefile with ArcGIS .lyr and ArcView 3x .avl) The US...
