Town Lake 1999 TownLake1999.mdb geodatabase Boundary twnl83: polygon lake boundary digitized from USGS 7.5 minute topos island: polygon island boundaries cont_2: 2 ft contours twn_pt: 1999 survey data points TownLk83_poly.shp: polygon lake boundary digitized from USGS 7.5 minute topos TownLk_islands_poly.shp: polygon island boundaries TownLk_cont_2.shp: 2 ft contours TownLk_pt.shp: 1999 survey data points alltown.txt: xyz txt file of survey data points townlk_vol.txt: list of elevations areas volumes calculated from tin (-elev,aquare ft,cubic ft) townlk_vol2.txt: above file converted to (elev,acre,acre-feet) area.table.txt: elevation area table formatted (in acres) volume.table.txt: elevation volume table formatted (in acre-feet)