Hubbard Brook Experimental Forest Hydrography: GIS Shapefile

Diazo copy of Hubbard Brook Watershed Map generated stereophoto- grammetrically based on May, 1956 aerial photography. Shows New Hampshire state plane coordinate system reference points which were projected into UTM Zone 19 and used as reference tics. The streams, ponds, and lakes were manually digitized. This shapefile contains only streams, see hbef_waterbodies for lake and pond polygons. Data distributed as shapefile in Coordinate system EPSG:26919 - NAD83 / UTM zone 19N

基于1956年5月航空摄影资料，通过立体摄影测量法生成的哈伯德布鲁克（Hubbard Brook）流域重氮复印地图。该地图包含投影至通用横轴墨卡托（UTM）第19带的新罕布什尔州州平面坐标系参考点，并将其用作参考格网点。流域内的溪流、池塘与湖泊均采用手动数字化方式采集。本形状文件（shapefile）仅包含溪流数据，湖泊与池塘的多边形矢量数据请参阅hbef_waterbodies数据集。本数据以形状文件格式分发，采用的坐标系为EPSG:26919 —— 北美1983大地基准（NAD83）/ UTM第19北带。