DOI: https://doi.org/10.5069/G9ZG6QGP
OT Collection ID: OT.032026.6340.1
OT Collection Name: Post-Bobcat Fire lidar of Sawpit Wash, California, 2020
Short Name: CA20_DiBiase
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.032026.6340.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.032026.6340.1

	2. Raster
		opentopoID: OTSDEM.032026.6340.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.032026.6340.1


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Collection Overview: This airborne lidar dataset was collected by NCALM for Roman DiBiase at Pennsylvania State University. The data were collected immediately following the 2020 Bobcat Fire, prior to the first rainfall event, to quantify post-fire dry ravel accumulations in headwater valleys. The study area includes the region of Monrovia Canyon and Sawpit Wash in the San Gabriel Mountains, just north of Monrovia, California, and covers approximately 23 km2.
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-2324629

Dataset Citation: DiBiase, R. (2026). Post-Bobcat Fire lidar of Sawpit Wash, California, 2020. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. https://doi.org/10.5069/G9ZG6QGP. Accessed 2026-05-14

Use License: CC BY 4.0

Dataset Keywords: lidar, Bobcat Fire, San Gabriel Mountains, dry ravel

Survey Date: 11/05/2020
Publication Date: 03/28/2026

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Data Provider and Roles:
	1. Pennsylvania State 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: 358,458,865 pts

Area: 40.4 km^2

Point Density: 8.87 pts/m^2

Classifications: 
	Class 1 - Unclassified: 287,315,849
	Class 2 - Ground: 71,143,016
Coordinates System: 
	Horizontal: NAD83 (2011) (EPOCH:2010) / UTM Zone 11N Meters [EPSG: 6340]
	Vertical: NAVD88 (GEOID 18) [EPSG: 5703]

Survey Report: https://object.cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/CA20_DiBiase_metadata.pdf

LAS Validation Data Report: https://portal.opentopography.org/lasReport?opentopoID=OTLAS.032026.6340.1

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Dataset Boundary in GeoJSON Format: 
	Point Cloud: https://raw.githubusercontent.com/OpenTopography/Data_Catalog_Spatial_Boundaries/main/OpenTopography_Point_Cloud_Lidar/CA20_DiBiase.geojson
	Raster: https://raw.githubusercontent.com/OpenTopography/Data_Catalog_Spatial_Boundaries/main/OpenTopography_Raster/CA20_DiBiase.geojson

Dataset Extent (Bounding Box):
	North: 34.220069°
	South: 34.157085°
	East: -117.934175°
	West: -118.017923°