Woolpert20161031FEMA HQ Malheur, OR QL1 Lidar Hydro BreaklinesVector digital dataFEMA 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.
This task is for 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.Data is used for mapping to assist in geologic hazards mapping such as landslide hazard maps. 20160323ground conditionAs needed-117.532244-116.56222443.19170942.403149NoneHydro breaklinesNoneUnited StatesOregonNo restrictions apply to this data.None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data.Woolpertmailing and physical address
4454 Idea Center Blvd
DaytonOH45430USA(937) 461-5660(937) 461-07438:00 a.m. to 5:00 p.m. Eastern Standard TimeMicrosoft 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 TBAll 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.The lidar data is visually inspected for completeness to ensure that are no void areas or missing data.Produced to meet 0.163 meters horizontal accuracy at 95 percent confidence level.0.163 metersLidar system specifications are available in the project reportLAS 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 Non vegetated vertical accuracy 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. Bare-Earth DEM Non-Vegetated Vertical Accuracy (NVA) Tested 0.072 Meters Non vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.037 Meters (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. 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.0.096 metersRaw Swath Non-Vegetated Vertical Accuracy (NVA) Tested 0.096 Meters Non vegetated vertical accuracy 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. 106 NVA checkpoints were used.0.072 metersBare-Earth DEM Non-Vegetated Vertical Accuracy (NVA) Tested 0.072 Meters Non-Vegetated vertical accuracy 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 DEM. 106 NVA checkpoints were used.0.145 metersVegetated Vertical Accuracy (VVA) Tested 0.145 Meters at the 95th percentile reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the DEM. 87 VVA 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
Geomatics Data Solutions20161031Lidar acquisitionHillsboro, ORTopographic ServicesLidar dataset20160323ground conditionFEMA HQ Malheur, OR QL1 LidarThis data set is the project specified acquired point cloud data.Woolpert20161031Survey Control AcquisitionDayton, OHWoolpert Geospatial ServicesControl dataset20160309ground conditionFEMA HQ Malheur, OR QL1 LidarThis data set is the project specified acquired ground control and QAQC control data.Woolpert20161031Lidar deliverable processingDayton, OHWoolpert Geospatial ServicesLidar dataset20160323ground conditionFEMA HQ Malheur, OR QL1 LidarThis data set is the project specified lidar deliverables.Woolpert20161031Breakline deliverable processingDayton, OHWoolpert Geospatial Services3-d breakline dataset20160323ground conditionFEMA HQ Malheur, OR QL1 LidarThis data set is the project specified breakline deliverable.All lidar data were acquired using a Dual-Head DragonEye (DE) sensor owned and operated by GDS installed in a Cessna 401. The sensor was mounted in a Leica PAV100 gyro-stabilized mount integrated with a NovAtel SPAN GNSS and LCI-100C IMU. Real time navigation and GNSS/IMU data logging was provided by Leica FlightPro software. Lidar data were logged on the Airborne Hydrography, AB (AHAB) operator console. A calibration flight was conducted at Nampa Airport, ID on 30 March, 2016. Project data were acquired from 23 March 2016 until 09 April, 2016. Some blocks remained snow covered at this time. Once the snow had cleared, calibration flights were conducted at Nampa Airport, ID on 08 and 09 June, 2016, with the final survey data being acquired on 10 June and 15 June, 2016. Field calibration of the DE system is carried out to eliminate systematic errors by calculating corrections for boresight errors, scanner angle errors, remaining IMU angle errors and any necessary internal timing errors. Initial data coverage analysis and quality checks were performed to ensure there were no potential system issues were carried out in the field prior to demobilization of the sensor. Data were initially processed in Leica’s Lidar Survey Studio (LSS) using final processed trajectory information. LAS files from LSS were imported to a Terrascan project where spatial algorithms were used to remove gross system noise and a basic ground classification was conducted per flight line for Terra Match use. TMatch was then run on the project, and a comparison to the lidar control points was conducted. This calibrated/controlled LAS dataset was then provided to Woolpert for further processing and deliverable production.FEMA HQ Malheur, OR QL1 Lidar201603231200Geomatics Data SolutionsTopographic Servicesmailing and physical address
5920 NE Ray Circle Suite 210
HillsboroOR97124USA(760)536-6852unknownunknownWoolpert utilized 2 Trimble Navigation R10 Model GNSS dual-frequency GPS receivers and 1 TSC3 data collector for this project. The field crew utilized Real-Time Kinematic (RTK) and GPS Rapid Static methods throughout the ground control data collection process. Using these techniques, observations were performed on a total of 244 points The survey was conducted using a 1-second epoch rate, in a fixed solution RTK mode, with each observation lasting between 60 to 180 seconds. Each station was occupied twice to insure the necessary horizontal and vertical accuracies were being met for this LiDAR / photogrammetric project.FEMA HQ Malheur, OR QL1 Lidar ground control and QAQC control Acquisition201603091200Woolpert, Inc.Geospatial Servicesmailing and physical address
4454 idea Center Blvd.
DaytonOH45430USA(937) 461-5660(937) 461-07438:00 a.m. to 5:00 p.m. Eastern TimeOnce calibration of the flightline data was completed by GDS the data was then provided to Woolpert. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" lidar returns. This process determined Default (Class 1), Ground (Class 2), Low Noise (Class 7), Water (Class 9), Ignored Ground (Class 10), Bridge Decks (Class 17) and High Noise (Class 18). The bare-earth (Class 2 - Ground) lidar points underwent a manual QA/QC step to verify the quality of the DEM as well as a peer-based QC review. This included a review of the DEM surface to remove artifacts and ensure topographic quality. Classification of water (class 9) and ignored ground (class 10) was completed via the use of the hydrologic breaklines collected for the hydro-flattening phase. The overlap classes were determined by first identifying the overlapping areas and reclassifying the LAS data by offset from a corridor. This allows the returns located on the edge of the swath to be removed from the bare earth coverage in an effort to produce a more uniform data density. The returns determined to be overlap including overlap default, ground, water, and ignored ground are then applied an overlap flag and reclassified to their respective standard classification value. Supervisory QC monitoring of work in progress and completed editing ensured consistency of classification character and adherence to project requirements across the entire project area. The resulting deliverables for this task order consist of classified LAS file in LAS 1.4 format, Raw Swath LAS files in LAS 1.4 format, 0.5 meter pixel size DEM files in ERDAS IMG format, 8-bit Intensity files in GeoTIFF format, Hydrologic and Bridge abutment breakline data in ESRI Geodatabase format.FEMA HQ Malheur, OR QL1 Lidar201603231200Woolpert, Inc.Geospatial Servicesmailing and physical address
4454 Idea Center Blvd.
DaytonOH45430USA(937) 461-5660(937) 461-07438:00 a.m. to 5:00 p.m. Eastern TimeThe compilation procedure included use of lidar intensity, bare earth surface model, point cloud data, and open source imagery in an effort to manually compile hydrologic features in a 2-d environment. Following the compilation phase, a separate process was used to adjust the breakline data to best match the water level at the time of the lidar collection. Any ponds and/or lakes were adjusted to be at or just below the bank and to be at a constant elevation. Any streams were adjusted to be at or just below the bank and to be monotonic. Manual QAQC and peer-based QC review was performed on all delineated data to ensure horizontal placement quality and on all adjusted data to ensure vertical placement quality. Bridge breaklines were also compiled in efforts to generate an accurate DEM product. The final hydrologic and bridge breakline product was delivered in ESRI geodatabase format and was also used in the processing of the DEM deliverable.FEMA HQ Malheur, OR QL1 Lidar201603231200Woolpert, Inc.Geospatial Servicesmailing and physical address
4454 Idea Center Blvd.
DaytonOH45430USA(937) 461-5660(937) 461-07438:00 a.m. to 5:00 p.m. Eastern TimeVectorNAD 1983 2011 UTM Zone 11N0.9996-117.00.0500000.00.0coordinate pair0.010.01metersD NAD 1983 2011GRS 19806378249.1449999996293.464999999999997North American Vertical Datum of 1988(GEOID12B)0.000100metersExplicit elevation coordinate included with horizontal coordinatesUSGS/NGTOCmailing and physical address
1400 Independence Rd.
RollaMO65401USA(573) 308-3587UnknownUnknownDownloadable DataWoolpert 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.unknown20161031Woolpertmailing and physical address
4454 Idea Center Blvd.
DaytonOH45430USA(937) 461-5660(937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern TimeFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeUnclassifiedUnclassifiedUnclassified