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Point Cloud Data   Bulk Download     opentopoID: OTLAS.032013.26910.2

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Collection Overview:

The Diablo Canyon Power Plant (DCPP) Lidar and Imagery datasets are comprised of three separate Lidar surveys: Diablo Canyon (2010), Los Osos (2011), and San Simeon (2013).

The DCPP San Simeon project study area is located primarily in San Luis Obispo County, California, encompasses approximately 195,000 acres (801 km²), and measures 75 miles in length. Watershed Sciences, Inc. (WSI) collected Light Detection and Ranging (Lidar) data and orthophotography across the DCPP San Simeon survey area from 29 January 2013 to 25 February 2013. For optimal capture of the intertidal zone, WSI acquired Lidar data of the coastline during seasonal low tides between 7 February 2013 and 10 February 2013.

The lidar survey utilized a Leica ALS70 sensor in a Cessna Caravan, and an Optech Orion sensor in a Bell Long Ranger. The Leica system was used for acquisition of the inland portion of the study area. It was set to acquire 240,000 laser pulses per second (i.e., 240 kHz pulse rate) and flown at 1,100 meters above ground level (AGL), capturing a scan angle of ±15° from nadir. The Orion system was used to acquire the intertidal portion of the study area. It was set to acquire 175,000 laser pulses per second and flown at 300 meters AGL, capturing a scan angle of ±13° from nadir. Both laser systems were programmed to yield an average native pulse density of ≥8 pulses per square meter over terrestrial surfaces.

Digital orthophotos were collected using a 260 megapixel ultra large format digital aerial camera. Image radiometric values were calibrated to specific gain and exposure settings associated with each capture using Microsoft's UltraMap software suite. The calibrated images were saved in TIFF format for input to subsequent processes. Photo position and orientation were calculated by linking the time of image capture, the corresponding aircraft position and attitude, and the smoothed best estimate of trajectory (SBET) data in POSPAC. Within the Inpho software suite, automated aerial triangulation was performed to tie images together and to align with ground control. The orthophotos were delivered in 0.375 USGS tiles with a 3'' pixel resolution.

This survey was flown in conjunction with the DCPP Senior Seismic Hazard Analysis Committee (SSHAC) Level 3 process and as part of the DCPP Long-Term Seismic Program (LTSP). In addition to aerial Lidar data, DEM and orthophotography raster data are available for this area: San Simeon DEMs and Orthophotos.

Dataset Acknowledgement: Pacific Gas and Electric Company (PG&E) shall not be held liable for improper or incorrect use of these data. Data and related graphics (e.g., GIF or JPG format files) are not legal documents and are not intended to be used as such. The information contained in the data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistently within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. PG&E gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from PG&E and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on computer systems by PG&E and its authorized representatives, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.

Dataset Citation: PG&E Diablo Canyon Power Plant (DCPP): San Simeon and Cambria Faults, CA. Distributed by OpenTopography. https://doi.org/10.5069/G9CN71V5 . Accessed: 2024-04-23

Use License: Not Provided

Dataset Keywords: San Luis Obispo County, San Simeon, Cambria Faults , Monterey County, California, PG&E, DCPP, lidar

Survey Date: 02/07/2013 - 02/25/2013

Publication Date: 02/25/2013

Data Provider and Roles:
Funder

• Pacific Gas & Electric Company

Collector

• Watershed Sciences, Inc

Total number of points: 17,716,478,347 pts

Area: 803 km²

Point Density: 22.06 pts/m²

Classifications:

Class 1 - Unclassified	11,192,981,701
Class 2 - Ground	2,539,602,243
Class 3 - Low Vegetation	1
Class 5 - High Vegetation	3,895,240,755
Class 6 - Building	86,130,548
Class 7 - Low Point (low noise)	2,522,832
Class 20 - Reserved	251
Class 22 - Reserved	16

Raster Resolution: 1 meter

Orthophoto Resolution: 0.08 meter

Coordinate System:
    Horizontal: NAD83 (2011) / UTM Zone 10N Meters [EPSG: 26910]
    Vertical: NAVD88 (GEOID 12A) [EPSG: 5703]

Units: meter

Survey Report: Reports

LAS Validation Data Report: CA13_SAN_SIM.html

Tile index in shapefile format: Download

Dataset Extent in KMZ format: Download

Dataset Spatial Bounds: North: 35.8767546659619°     South: 35.1171962142113°     East: -120.399811900294°     West: -121.411611681819°