DOI: https://doi.org/10.5069/G9NP22DP
OT Collection ID: OT.102016.26914.1
OT Collection Name: Niobrara River, Nebraska
Short Name: NE15_Alexander, NE15_AlexanderB
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.102016.26914.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.102016.26914.1

	2. Raster
		opentopoID: OTSDEM.102016.26914.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.102016.26914.1

	3. Point Cloud Data
		opentopoID: OTLAS.102016.26914.1b
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.102016.26914.1b


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Collection Overview: This dataset was collected as an NCALM Seed grant for PI Jason Alexander, University of Wyoming, for the purpose of quantifying the relationship between channel morphology and the topography of large emergent sandbars.This survey was performed with 2 different LiDAR systems: 1) Optech Gemini Airborne Laser
Terrain Mapper (ALTM) which is an infrared laser mapping sensor and 2)
Optech Aquarius ALTM which is a hybrid laser mapping system as it
collects simultaneous land and shallow water-depth measurements. It operates in the green
spectrum, thus enabling it to penetrate water. These LiDAR mapping systems along with an
Optech 12-bit full waveform digitizer were mounted consecutively in a twin-engine Piper PA-
31-350 Navajo Chieftain (Tail Number N154WW).Publications 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-1043051.

Dataset Citation: Niobrara River, Nebraska. Distributed by OpenTopography. https://doi.org/10.5069/G9NP22DP . Accessed: 2024-04-19

Use License: CC BY 4.0

Dataset Keywords: lidar

Survey Date: 07/11/2015
Publication Date: 10/31/2016

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Data Provider and Roles:
	1. National Center for Airborne Laser Mapping
	Role: Collector
	Url: https://ncalm.cive.uh.edu/

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


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Total number of points: 295,745,974 pts

Area: 61 km^2

Point Density: 4.85 pts/m^2

Classifications: 
	Class 1 - Unclassified: 96,280,649
	Class 2 - Ground: 87,345,327
	Class 4 - Medium Vegetation: 76,007,992
	Class 9 - Water: 36,109,645
	Class 10 - Rail: 2,361
Coordinates System: 
	Horizontal: NAD83 (2011) / UTM Zone 14N Meters [EPSG: 26914]
	Vertical: NAVD88 (GEOID 09) [EPSG: 5703]

Survey Report: https://cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/2015_Alexander_Nebraska_Metadata.pdf

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/NE15_Alexander.html

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.102016.26914.1&download=true

Dataset Spatial Bounds:
	North: 42.8405077634647°
	South: 42.6968030743806°
	East: -99.1809917127469°
	West: -99.5607312877417°