Jim Chapman Lake (Cooper Lake) TWDB 2005/2007 Volumetric Survey Lake Boundaries Lake_95_440.shp: shoreline boundary digitized from 1995 DOQs, 1-meter resolution, water surface elevation = 440 feet above msl Land_95_440.shp: island boundaries digitized from 1995 DOQs, 1-meter resolution, water surface elevation = 440 feet above msl tinbndy_04_430_93.shp: boundary digitized from 2004 DOQs, 1-meter resolution, water surface elevation 430.93 feet above msl tinbndy_05_434_04.shp: boundary digitized from 2005 DOQs, 2-meter resolution, water surface elevation 434.04 feet above msl tinbndy_06_426_35.shp: boundary digitized from 2006 DOQs, 1-meter resolution, water surface elevation 426.35 feet above msl bndysat_432_8.shp: boundary digitized from ASTER satellite image taken on 04/07/06, 15-meter resolution, water surface elevation 438.8 feet above msl Note: tinbndy files edited such that where the data did not match the aerial photos, the digitized boundary was deleted Survey_Data.shp: all data collected by TWDB Both files below containing interpolated data are a result of the HydroEdit self-similar interpolation routine: XYJC2007_ss_interpolated06_stpl83.shp: interpolated data points added to TIN Model, these points were interpolated to the 2006 digitized boundary XYJC2007_ss_interpolated95_ln_interp_stpl83.shp: interpolated data points added to TIN Model, these points were interpolated to the 1995 digitized boundary also includes interpolated data resulting from line interpolation technique. jctnrs5_5ftcont.shp: 5 foot contours (created from converting tin model into a raster with 5 foot x 5 foot grids) Note: all files projected to NAD83 State Plane Texas North Cental Zone