FEMA 2006 140cm

Date(s): Coverage Availability/Geographic Extent: Footprint: Source(s):
2006 Orange, Jefferson, Galveston, Brazoria, Matagorda, Jackson, Victoria, Calhoun, Refugio, Aransas, San Patricio, Nueces 1/16 USGS Quadrangle FEMA

Data Access

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FEMA 2006 140cm is in the public domain and available from the Research and Distribution Center for the cost of reproduction.


Data Details

Category:
Lidar
Available Formats: LAS
Alternative Data: 1.4M Hydro-Enforced DEM, 3D Breaklines
Known Issues: Some DEMs require DEM to Raster conversion to import into ArcMap software
Recommended Uses: Basemap, Research, Analysis
Spatial Reference:

EPSG 26914, EPSG 26915

Description

This Lidar project is intended to provide high density elevation information of 13 coastal counties of Texas. It includes Bare Earth DEM (vegetation removal) and a high density set of mass points within the defined areas. The data sets are suitable for the development of contours for use in hydraulic/hydrologic model development and for assessing environmental impacts.

Typical uses include FEMA Digital Flood Rate Insurance Map (DFIRM) updates, watershed boundary delineations and other hydro studies per FEMA specifications. County Mapping projects which include several uses such as flood mitigation assessment and mapping projects that include accuracy verification, reporting, and metadata.

Lidar data for Texas is made available online through the use of data compression using LASTools. LASTools is an open-source collection of tools for lidar data viewing and manipulation. TNRIS uses the LASzip portion of LASTools for compression\decompression. LASTools provides a lossless compression of the data from las to laz formats.

  • Software with native LAZ support
  • ERDAS IMAGINE (14.1 and up) by Hexagon Geospatial
  • Global Mapper (13.1 and up) by Blue Marble Geo
  • ENVI LiDAR (5.1 and up) by Exelis VIS
  • FME (2012 and up) by Safe Software
  • LAStools by rapidlasso
  • plas.io 3D Web Viewer by Hobu Inc.
  • FUSION (3.40 and up) by Bob McGaughey of the USDA
  • Voyager (1.3 and up) by Voyager GIS
  • GRASS GIS (7.0 and up) by Open Source Geospatial Foundation (OSGeo)

Supplemental Information

Tile Index: Download File
Project Report(s): Download File
Lidar Breaklines: Download File