DOI: https://doi.org/10.5069/G9MG7MPD
OT Collection ID: OT.082020.6343.1
OT Collection Name: Post Hurricane Harvey Mapping of the Mission River, Texas 2018
Short Name: TX18_Guneralp, TX18_Guneralp2C, TX18_Guneralp3C
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.082020.6343.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.082020.6343.1

	2. Raster
		opentopoID: OTSDEM.082020.6343.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.082020.6343.1

	3. Raster
		opentopoID: OTSDEM.082020.6343.1b
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.082020.6343.1b


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Collection Overview: This lidar dataset was collected as part of an NCALM Rapid Response Project for Inci Gunerlap at Texas A&M University. Data collection  covers and area of ~69 km2 along the Mission River in Refugio, Texas after Hurricane Harvey.
Note: this project utilized three laser channels during its data collection. Each of the returns contained on the LAS tiles are encoded with a laser channel value. The values used are 1 (1550 nm), 2 (1064 nm), and 3 (532 nm), and are stored in the "User Data" record of the Point Data records in the LAS file. 
This data collection also contains hyperspectral images that are 72 Band, 1.5 m pixel size, in PCIDSK (.PIX) format. The digital number in the PIX image corresponds to milli-SRU (spectral radiance units). One SRU is equivalent to one microwatt per square-centimeter per steradian per nanometer.  Files are provided as individual flight strips as well as a single mosaic file of flight strips. These images can be downloaded here
The pre-computed Raster products are split into two separate landing pages: C1-2, and C1-2-3.  
Pre-computed Raster C1-2 contains the following:
DEM from classified ground returns from Channels 1 and 2 (IR only)
DSM from first return from Channels 1 and 2
  Pre-computed Raster C1-2-3 contains the following:
DEM from classified ground and bathymetry returns from all channels
DSM from first returns from all channels (C1C2C3)
Water surface grid from point class 39
Bathymetry grid from point class 9Publications associated with this dataset can be found at NCALM's Data Tracking Center

Dataset Acknowledgement: Lidar data acquisition and processing completed by the National Center for Airborne Laser Mapping (NCALM). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1830734.

Dataset Citation: Guneralp, I. (2020). Post Hurricane Harvey Mapping of the Mission River, Texas 2018.. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. https://doi.org/10.5069/G9MG7MPD.. Accessed: 2024-12-22

Use License: CC BY 4.0

Dataset Keywords: lidar, texas, hurricane, harvey, Mission River, Rapid Response, hyperspectral, 532 nm, 1550 nm, 1064 nm

Survey Date: 03/08/2018 - 03/09/2018
Publication Date: 08/26/2020

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Data Provider and Roles:
	1. Texas A&M University
	Role: Principal Investigator
	Url: Not Available.

	2. National Center for Airborne Laser Mapping
	Role: Collector
	Url: https://ncalm.cive.uh.edu/

	3. National Science Foundation
	Role: Funder
	Url: https://nsf.gov/


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Total number of points: 3,297,558,275 pts

Area: 68.04 km^2

Point Density: 48.46 pts/m^2

Classifications: 
	Class 1 - Unclassified: 883,840,267
	Class 2 - Ground: 1,127,679,296
	Class 3 - Low Vegetation: 49,149,757
	Class 4 - Medium Vegetation: 200,612,361
	Class 5 - High Vegetation: 1,012,238,715
	Class 6 - Building: 12,406,029
	Class 9 - Water: 4,313,481
	Class 38 - Reserved: 2,964,296
	Class 39 - Reserved: 4,354,073
Coordinates System: 
	Horizontal: NAD83 (2011) / UTM Zone 14N Meters [EPSG: 6343]
	Vertical: NAVD88 (GEOID 12A) [EPSG: 5703]

Survey Report: https://cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/TX18_Guneralp_metadata.pdf

LAS Validation Data Report: https://portal.opentopography.org/lasReport?opentopoID=OTLAS.082020.6343.1

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.082020.6343.1&download=true

Dataset Spatial Bounds:
	North: 28.3216419921909°
	South: 28.2139436642488°
	East: -97.2402407259092°
	West: -97.3141883455766°