SPATIAL DATA LINEAGE REPORT ------------------------------------------------------------------- LAYER NAME: Topography - Spot Elevations - One Foot DISK LOCATION: /disk5/elev01/ FEATURE TYPE: Point MAP UNIT: SJRWMD SOURCE SCALE: 200 PROJECTION: UTM Zone 17 meter HPGN GRS80 DESCRIPTION: One foot topographic contour spot elevations LAST UPDATE: 05/23/00 SOURCE: This data layer was digitized from the District's set of one foot contour mylar maps. These mylar maps were developed from stereo models based on aerial photographs. All of the approximately 1100 maps were digitized under contract #92W289. For more information, see the SJRWMD Water Resources Department, Division of Engineering, contact: Kristina Hickey. DISTRICT COVERAGE STATUS: Sparse, see graphic NOTES: Data development - All contours and spot elevations were plotted on mylars with an aerial photograph backdrop. Horizontal control, bench marks, and vertical control were plotted as points on the mylars. The contours and points from the mylars were hand digitized. The data was then trans- formed into state plane coordinates using the horizontal control points. August, 1996: This dataset was projected from Stateplane, East Zone, NAD 1927 to UTM, Zone 17, NAD 1983, 1990 Correction. This dataset was copied to double precision. ------------------------------------------------------------------------------- PAT ITEM DEFINITIONS: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? 1 AREA 8 18 F 5 - 9 PERIMETER 8 18 F 5 - 17 P192521T# 4 5 B - - 21 P192521T-ID 4 5 B - - 25 X_ELEV 6 6 N 2 - 31 NORTHING 8 12 F 3 - 39 EASTING 8 12 F 3 - 47 SIGMA_Z 4 12 F 3 - 51 SIGMA_Y 4 12 F 3 - 55 SIGMA_X 4 12 F 3 - 59 P_TYPE 1 1 C - - UNIQUE PAT ITEM VALUES AND DEFINITIONS: ITEM VALUE DESCRIPTION ---- ----- ----------- X_ELEV <variable> Elevation (feet) NORTHING 0.000 Northing EASTING 0.000 Easting SIGMA_Z 0.000 Error in z SIGMA_Y 0.000 Error in y SIGMA_X 0.000 Error in x P_TYPE Point type: C Combined horizontal and vertical control point H Horizontal control point S Spot elevation V Vertical control point See Engineering Division staff for more information. ------------------------------------------------------------------------------- ANNOTATION: None