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 In 2017, the North Central Texas Council of Governments facilitated the cooperative purchase of 0.5-Meter LiDAR (4PPM) for 1340 square miles of the NCTCOG region. The contractors for this project were AECOM and Woolpert. The LiDAR data were collected in January through March 2017 (leaf-off) and are available for purchase via DFWMaps Marketplace according to the following price schedule.
The LiDAR data are sold in 3,000' x 2,000' tiles, or 0.215 square miles. Sample files and a shapefile of the tile structure may be downloaded below.
LiDAR Sample - LAS Format
SDCP Index Grid
Specifications
| Camera |
Leica ALS80 LiDAR System |
| Nominal Pulse Spacing |
0.5 Meter, 4 points per meter |
| Accuracy |
9.25 cm vertical accuracy in non-restricted airspace and 12.5 cm vertical accuracy in restricted airspace |
| Relative Accuracy |
<=6 RMSEz within individual swaths and <=8 cm within swath overlap |
| Measurement Rate |
500 kHz |
| Returns |
up to 5 |
| Capture |
January-March 2017 |
| Ground Conditions |
Leaf off; free from snow, haze, fog, or dust; streams within normal banks |
| Coordinate System |
Texas State Plane, North Central Zone |
| Horizontal Datum |
NAD 83 |
| Vertical Datum |
NAVD88 |
| Units |
US Survey Feet |
| Breaklines |
Hydrologic flattening |
| Format |
LAS 1.2, classified text file, bare earth DEM, first return DSM |
| Classification |
Data are classified according to ASPRS Classification Standards with 85% of buildings identified. |
More information on the 2017 project can be found in the project level metadata.
For questions regarding the 2017 LiDAR project, send us an email.
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