OpenTopography

Raster

• PG&E Diablo Canyon Power Plant (DCPP): San Simeon, CA Central Coast

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 raster data, LiDAR point cloud data are available for this area: San Simeon Point Cloud Data.

Horizontal Coordinates:	UTM Z10N NAD83 (2011) METERS [EPSG: 26910]
Vertical Coordinates:	NAVD88 GEOID12A [EPSG: 5703]
Point Density:	22.06 pts/m2
Area:	803 km2

• PG&E Diablo Canyon Power Plant (DCPP): Los Osos, CA Central Coast

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 Los Osos project study area is located in San Luis Obispo County, California, and encompasses approximately 170,000 acres (674.59 square kilometers). Watershed Sciences, Inc. (WSI) collected Light Detection and Ranging (LiDAR) data across the project area from 17 March 2011 to 31 March 2011.

The LiDAR survey utilized a Leica ALS60 sensor in a Cessna Caravan. The Leica system was set to acquire 105,900 laser pulses per second (i.e., 105.9 kHz pulse rate) and flown at 900 meters above ground level (AGL), capturing a scan angle of ±14° from nadir when clouds and terrain permitted. With these flight parameters, the laser swath width is 449m and the laser pulse footprint is 21cm. These settings yield an average native pulse density of ≥8 pulses per square meter over terrestrial surfaces.

This survey was flown as part of the DCPP Long-Term Seismic Program (LTSP). In addition to raster data, LiDAR point cloud data are available for this area: Los Osos Point Cloud Data.

Horizontal Coordinates:	UTM Z10N NAD83 (CORS96) METERS [EPSG: 26910]
Vertical Coordinates:	NAVD88 (GEOID03) [EPSG: 5703]
Point Density:	8.93 pts/m2
Area:	688 km2

• PG&E Diablo Canyon Power Plant (DCPP): Diablo Canyon, CA Central Coast

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 Diablo Canyon project study is located in San Luis Obispo County, California, and encompasses approximately 10,634 acres (43.03 square kilometers). Watershed Sciences, Inc. (WSI) collected Light Detection and Ranging (LiDAR) data on both the inland and intertidal land within the Diablo Canyon study area on 28 January 2010. For optimal capture of the intertidal zone, WSI acquired LiDAR data of the coastline during seasonal low tides (between 0.0 ft and peak low of ~ -1.5 ft) and in conjunction with a PDOP value of less than 3.0.

This LiDAR survey utilized a Leica ALS50 Phase II laser system. The sensor scan angle was ±13° from nadir with a pulse rate designed to yield an average native density of ≥8 pulses per square meter over terrestrial surfaces. The area of interest was surveyed with an opposing flight line side-lap of ≥50% (≥100% overlap) to reduce laser shadowing and increase surface laser painting.

This survey was flown as part of the DCPP Long-Term Seismic Program (LTSP). In addition to raster data, LiDAR point cloud data are available for this area: Diablo Canyon Point Cloud Data.

Horizontal Coordinates:	UTM Z10N NAD83 (CORS96) METERS [EPSG: 26910]
Vertical Coordinates:	NAVD88 (GEOID03) [EPSG: 5703]
Point Density:	9.24 pts/m2
Area:	43 km2

• Christina River Basin Critical Zone Observatory July 2010 LiDAR Survey
High-resolution LiDAR data (average first-return point density of 10 points m² and 2-4 cm vertical accuracy) were obtained by NCALM for 121 km² of the Christina River Basin Critical Zone Observatory (CRB-CZO) during both leaf-off (April 2010; see dataset CRB-10-Apr) and leaf-on (July 2010) periods. Data acquisition, ground-truthing, vegetation surveys and processing were funded and coordinated by NSF Award EAR-0922307 (PI. Qinghua Guo) to collect similar data at all six CZOs for a variety of cross-site analyses, including calibration of algorithms to extract vegetation characteristics from the LIDAR point cloud data. The CRB-CZO is particularly interested in using this LIDAR dataset for high-resolution analyses of stream channel and floodplain geomorphology.

Horizontal Coordinates:	UTM Z18N NAD83 Meters [EPSG: 26918]
Vertical Coordinates:	NAVD88 [EPSG: 5703]
Point Density:	11.12 pts/m2
Area:	133 km2

• Christina River Basin Critical Zone Observatory April 2010 LiDAR Survey
High-resolution LiDAR data (average first-return point density of 10 points m² and 2-4 cm vertical accuracy) were obtained by NCALM for 121 km² of the Christina River Basin Critical Zone Observatory (CRB-CZO) during both leaf-off (April 2010) and leaf-on (July 2010; see dataset CRB-10-Jul) periods. Data acquisition, ground-truthing, vegetation surveys and processing were funded and coordinated by NSF Award EAR-0922307 (PI. Qinghua Guo) to collect similar data at all six CZOs for a variety of cross-site analyses, including calibration of algorithms to extract vegetation characteristics from the LIDAR point cloud data. The CRB-CZO is particularly interested in using this LIDAR dataset for high-resolution analyses of stream channel and floodplain geomorphology.

Horizontal Coordinates:	UTM Z18N NAD83 Meters [EPSG: 26918]
Vertical Coordinates:	NAVD88 [EPSG: 5703]
Point Density:	13.94 pts/m2
Area:	133 km2

• Andrews Experimental Forest and Willamette National Forest LiDAR (Aug 2008)
Watershed Sciences, Inc. collected Light Detection and Ranging (LiDAR) data from HJ Andrews and the Willamette National Forest (NF) on August 10th and 11th 2008. Total area of the study is 17,705 acres. The total area of delivered LiDAR including 100m buffer is 19,493 acres.

Horizontal Coordinates:	UTM Zone 10 N NAD83 Meters [EPSG: 26910]
Vertical Coordinates:	NAVD88 (Geoid 03) [EPSG: 5703]
Point Density:	12.23 pts/m2
Area:	79 km2

• Teton Conservation District, Wyoming Lidar
This dataset was collected during the summer of 2008 by Sanborn on behalf of the Teton Conservation District. The project mapped 141 square miles of area within the Snake River Range and the Teton National Forest. The area covered is west of the Snake River to the Bridger-Teton National Forest boundary, and from Teton Village to Red Top Meadows.

Horizontal Coordinates:	UTM Zone 12 N NAD83 Meters [EPSG: 26912]
Vertical Coordinates:	NAVD88 [EPSG: 5703]
Point Density:	2.62 pts/m2
Area:	365 km2

• Lake Tahoe Basin LiDAR
Watershed Sciences, Inc. (WSI) collected Light Detection and Ranging (LiDAR) data of land surrounding Lake Tahoe from August 11th to August 24th, 2010 totaling 232,536 acres. The resulting dataset has average first-return density of delivered dataset is 11.82 points per square meter with an average ground point density of 2.26 points per square meter. The vertical accuracy was estimated at 3.5 cm RMSE. All TRPA LiDAR data is in the public domain.

Horizontal Coordinates:	UTM Zone 10 N NAD83 Meters [EPSG: 26910]
Vertical Coordinates:	NAVD88 [EPSG: 5703]
Point Density:	13.20 pts/m2
Area:	941 km2

• EarthScope Southern & Eastern California LiDAR Project
The EarthScope Southern & Eastern California LiDAR project acquired high resolution LiDAR topography data along major active faults as part of the EarthScope Facility project funded by the National Science Foundation (NSF).

Horizontal Coordinates:	UTM Zone 11 N WGS84 Meters [EPSG: 32611]
Vertical Coordinates:	Ellipsoid
Point Density:	4.61 pts/m2
Area:	1,683 km2

• EarthScope Yakima LiDAR Project
The EarthScope Yakima LiDAR project acquired high resolution LiDAR topography data along the Yakima River in Central Washington as part of the EarthScope Facility project funded by the National Science Foundation (NSF).

Horizontal Coordinates:	UTM Zone 10 N WGS84 Meters [EPSG: 32610]
Vertical Coordinates:	Ellipsoid
Point Density:	3.61 pts/m2
Area:	371 km2

• EarthScope Alaska Denali Totschunda LiDAR Project
The EarthScope Alaska Denali-Totschunda LiDAR project acquired high resolution LiDAR topography data along the Denali-Totschunda fault system as part of the EarthScope Facility project funded by the National Science Foundation (NSF).

Horizontal Coordinates:	UTM Zone 7 N WGS84 Meters [EPSG: 32607]
Vertical Coordinates:	Ellipsoid
Point Density:	5.68 pts/m2
Area:	410 km2

• EarthScope Intermountain Seismic Belt LiDAR Project
The EarthScope Intermountain Seismic Belt LiDAR project acquired high resolution LiDAR topography data in tectonically active regions in Utah and Wyoming, including Yellowstone and Teton National Parks, as part of the EarthScope Facility project funded by the National Science Foundation (NSF).

Horizontal Coordinates:	UTM Zone 12 N WGS84 Meters   [EPSG: 32612]
Vertical Coordinates:	Ellipsoid
Point Density:	6.74 pts/m2
Area:	830 km2

• EarthScope Northern California LiDAR Project
The EarthScope Northern California LiDAR project acquired high resolution LiDAR topographic data along major active faults in the Northern San Andreas Fault system, as part of the EarthScope Facility project funded by the National Science Foundation (NSF).

Horizontal Coordinates:	UTM Zone 10 N WGS84 Meters [EPSG: 32610]
Vertical Coordinates:	Ellipsoid
Point Density:	5.17 pts/m2
Area:	2,448 km2