2016 FEMA Lidar: Malheur, OR

This data set is a high resolution data set of lidar covering the total task order area (approximately 885 square miles) in southeast Oregon. The lidar data was acquired and processed under the requirements identified in this task order. The data delivered in this task order is compliant with US. Geological Survey National Geospatial Program Lidar Base Specification Version 1.2. Lidar data is a remotely sensed high resolution elevation data collected by an airborne platform. The lidar sensor uses a combination of laser range finding, GPS positioning, and inertial measurement technologies. The lidar systems collect data point clouds that are used to produce highly detailed Digital Elevation Models (DEMs) of the earth's terrain, man-made structures, and vegetation. The task required the LiDAR data to be collected at a nominal pulse spacing (NPS) of 0.35 meters. The final products include classified LAS, 0.5 meter pixel raster DEMs of the bare-earth surface in ERDAS IMG Format, and Intensity data in TIFF format. Tiled data was delivered in 1500m x 1500m tiles. Each LAS file contains lidar point information, which has been calibrated, controlled, and classified. Additional deliverables include hydrologic breakline data, bridge abutment breaklines, control data, project boundary, and tile index provided as ESRI shapefile, lidar processing and survey reports in PDF format, FGDC metadata files for each data deliverable in .xml format, and LAS swath data. Ground conditions: Water at normal levels; no unusual inundation; no snow; leaf off.

FEMA HQ Malheur, OR QL1 Lidar 0.35m NPS Lidar Data

Acquisition and Processing Production Task

USGS Contract No. G10PC00057

Task Order No. G15PD00642

Woolpert Order No. 75818

Contractor: Woolpert, Inc.

Data is used for mapping to assist in geologic hazards mapping such as landslide hazard maps.

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

"ldrspec" : "USGS NGP Base Specifications v1.2",

"ldrsens" : "Leica Dual-Head DragonEye",

"ldrmaxnr" : "15",

"ldrnps" : "0.350",

"ldranps" : "0.350",

"ldrdens" : "8",

"ldradens" : "8",

"ldrfltht" : "900",

"ldrfltsp" : "125",

"ldrscana" : "40",

"ldrscanr" : "50",

"ldrpulsr" : "520",

"ldrpulsd" : "5",

"ldrpulsw" : "2.5",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.20",

"ldrswatw" : "655",

"ldrswato" : "15",

"ldrcrs" : "NAD83(2011) UTM11N meters",

"ldrgeoid" : "GEOID12B"

},

"ldraccur" : {

"ldrchacc" : "0.163",

"rawnva" : "0.096",

"rawnvan" : "106",

"clsnva" : "0.072",

"clsvva" : "0.145"

},

"lasinfo" : {

"lasver" : "1.4",

"lasprf" : "6",

"laswheld" : "Geometrically unreliable points were identified using a combination of automated and manual techniques and subsequently classified as high or low noise.",

"lasolap" : "Swath overlap points were identified in these files by adding 16 to the standard classification values yielding overlap default and overlap ground, overlap water, and overlap ignored ground. Flags were then applied to these points and subsequently reclassified to their respective standard classification values",

"lasintr" : "16",

"lasclass" : {

"clascode" : "1",

"clasitem" : "default/unclassified"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Bare-earth"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Low noise"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignored ground"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridge Decks"

},

"lasclass" : {

"clascode" : "18",

"clasitem" : "High Noise"

}

}}

Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by any user of this data. Any use will be at the end-user’s sole risk.

Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners

Data is available online for bulk or custom downloads

None

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Microsoft Windows 7 Version 6.1 (Build 7600); ArcMap 10.2; ArcCatalog 10.2; TerraScan ver. 16.01; Global Mapper v.17 TerraModeler ver. 16.01; Geocue 2014.1.21; LP360 2015.1. Leica Lidar Survey Studio Approximate size of entire delivery dataset = 3.0 TB

Produced to meet 0.163 meters horizontal accuracy at 95 percent confidence level. Quantitative value: 0.163 meters, Test that produced the valued: Lidar system specifications are available in the project report

LAS data covering the FEMA HQ Malheur, OR QL1 Lidar Task Order was compared to independent survey control points to determine the NVA of the Raw Swath and of the Bare-Earth DEM. In addition, this LAS data was compared to independent VVA points.

Raw Swath Non-Vegetated Vertical Accuracy (NVA) Tested 0.096 Meters at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the TIN using all points.

Relative accuracy also known as "between swath" accuracy was tested through a series of well distributed flight line overlap locations. The relative accuracy for the FEMA HQ Malheur, OR QL1 Lidar tested at 0.024 meters RMSDz. 106 NVA checkpoints were used.

VVA Errors larger than 95th percentile include:

Point 3026A, Easting 498042.052, Northing 4742435.108, Z-Error 0.182 Meters

Point 3028, Easting 477766.450, Northing 4776987.527, Z-Error 0.148 Meters

Point 3031A, Easting 453424.625, Northing 4745041.067, Z-Error 0.147 Meters

Point 3036A, Easting 496091.977, Northing 4784616.171, Z-Error 0.170 Meters

The lidar data is visually inspected for completeness to ensure that are no void areas or missing data.

All formatted data cover the entire area specified for this project and are validated using a combination of commercial lidar processing software, GIS software, and proprietary programs to ensure proper formatting and loading prior to delivery.

Data is backed up to tape and to cloud storage.