DOI: https://doi.org/10.5069/G9XK8CG1
OT Collection ID: OT.022013.26918.1
OT Collection Name: West Swanzey, NH: Geomorphic Response to Dam Removal, Ashuelot River (2010)
Short Name: NH10_Gartner
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Raster
		opentopoID: OTSDEM.022013.26918.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.022013.26918.1

	2. Point Cloud Data
		opentopoID: OTLAS.022013.26918.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.022013.26918.1


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Collection Overview: NCALM Project. PI: John Gartner, Dartmouth College. The survey area covers a 45 square kilometers along the Ashelot River, south of Keene and crossing West Swanzey, New Hampshire. Data were collected to quantify the geomorphic and sedimentological responses to dam removal. Repeat survey from 2011: West Swanzey, NH: Geomorphic Response to Dam Removal, Ashuelot River (2011)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 - https://ncalm.cive.uh.edu). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1043051.

Dataset Citation: West Swanzey, NH: Geomorphic Response to Dam Removal, Ashuelot River (2010). Distributed by OpenTopography. https://doi.org/10.5069/G9XK8CG1 . Accessed: 2024-12-22

Use License: CC BY 4.0

Dataset Keywords: lidar

Survey Date: 07/19/2010
Publication Date: 02/21/2013

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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: 591,734,630 pts

Area: 45 km^2

Point Density: 13.15 pts/m^2

Classifications: 
	Class 1 - Unclassified: 105,246,190
	Class 2 - Ground: 91,613,903
	Class 4 - Medium Vegetation: 390,029,667
	Class 6 - Building: 4,774,905
	Class 7 - Low Point (low noise): 68,213
	Class 8 - Model Key/Reserved: 5
	Class 9 - Water: 1,747
Coordinates System: 
	Horizontal: NAD83 (CORS96) / UTM Zone 18N Meters [EPSG: 26918]
	Vertical: NAVD88 (GEOID 03) [EPSG: 5703]

Survey Report: https://cloud.sdsc.edu/v1/AUTH_opentopography/www/metadata/NCALM/NH10_Gartner_report.pdf

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/NH10_Gartner.html

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.022013.26918.1&download=true

Dataset Spatial Bounds:
	North: 42.9333653691945°
	South: 42.8096130171628°
	East: -72.2438425775152°
	West: -72.3796494026411°