2008 LiDAR
In conjunction with the Geographic Data Committee, H-GAC had LiDAR flown by Merrick & Company in mid-2008 for portions of the region, mainly Harris County and its watersheds. The final deliverables include 5 foot pixel resolution bare-earth digital elevation model grids and surface elevation model grids, 1 foot contour lines, breaklines, and bare-earth and surface hillshades, all of which can be read by ArcGIS and some AutoCAD applications. In addition, DEM and hillshade mosaics are included for ArcGIS use. Finally, bare-earth and all-return point data are now included in MrSID4 format. See map below for exact coverage.
Click map for larger version
Price
$2000: Full coverage on external hard drive (price of external hard drive included). Purchase can be combined with 2006 Gulf Coast LiDAR on order form. Order by selecting the "Order LiDAR" button below. Advance payment required. Purchase Orders, Checks, Visa, and Mastercard accepted.
2006 Gulf Coast LiDAR
In 2006, FEMA contracted with Sanborn Mapping Company, Inc. to have LiDAR flown for all Texas Gulf Coast counties. 1.4 meter pixel resolution, bare-earth digital elevation models were derived from the LiDAR returns. Originally used for coastal and stream flood assessments, these elevation models remain some of the most accurate models of the area. H-GAC has processed the 4 square mile digital elevation tiles into Grid files, which can be read by ArcGIS and some AutoCAD applications. In addition, a mosaic of the entire dataset, seamlessly piecing all tiles into one image, is included in file geodatabase format, which can be read by ArcGIS 9.2 and higher. The coverage area includes all of Brazoria, Chambers, Galveston, and Matagorda counties.
Click image for larger version
Price
$500: Full coverage on external hard drive (price of external hard drive included). Purchase can be combined with 2008 LiDAR on order form. Order by selecting the "Order LiDAR" button below. Advance payment required. Purchase Orders, Checks, Visa, and Mastercard accepted.