Woolpert 20191115 Lidar point cloud Product: Processed, classified lidar point cloud data tiles in LAS 1.4 format. Geographic Extent: Approximately 7,176 square miles of QL2 lidar data across four areas of interest throughout Oklahoma; approximately 952 square miles over the Oklahoma City UTM 14 AOI. Dataset Description: The OK Panhandle 2018 D18 lidar project called for the planning, acquisition, processing, and production of derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.71 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.3. The data was developed based on a horizontal datum/projection of NAD83 (2011) UTM Zone 14, meters (EPSG 6343), and a vertical datum of NAVD88 (GEOID12B) meters. Lidar data was delivered as processed LAS 1.4 files formatted to 1,190 individual 1,500-meter x 1,500-meter tiles. Ground Conditions: Lidar was collected from January 30, 2019 through March 7, 2019 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established 85 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 316 independent accuracy checkpoints (186 NVA points and 130 VVA points), were collected and used to assess the vertical accuracy of the data. Accuracy testing was performed on a per-UTM zone basis. For the OK Panhandle + OK City UTM z14 AOIs, a total of 51 control points, 125 NVA points, and 80 VVA points were established. These checkpoints were not used to calibrate or post process the data. This project will support the 3DEP mission, the Natural Resources Conservation Service (NRCS) high resolution elevation enterprise program and the Federal Emergency Management Agency (FEMA) Risk Mapping, Assessment and Planning (MAP) program. USGS Contract No. G16PC00022; Task Order No. 140G0218F0438; Contractor: Woolpert. Sub-Contractor: SurvTech. USGS NGP Base Specifications v1.3 Optech Galaxy PRIME 8 0.71 3.64 0.71 3.64 2000 145 45 66 450 3 1 1064 1 0.25 1657 30 GEOID12B 0 0.088 125 0.092 125 0.150 80 1.4 6 Geometrically unreliable points were identified using a combination of automated and manual techniques and subsequently classified as high or low noise and given the standard Withheld bit. Swath "overage" points were identified in these files using the standard LAS overlap bit. 16 1 Processed but not classified 2 Bare earth ground 7 Noise 9 Water 17 Bridge Decks 18 High Noise 20 Ignored ground 20190130 20190307 ground condition Complete None planned -97.6733327116 -97.1395108663 35.7250862571 35.0866077816 619990.013441 669304.587431 3954693.72171 3883874.27189 None Lidar LAS Point Cloud Classified LAS Elevation Data Remote Sensing None United States Oklahoma Cleveland County Oklahoma County No restrictions apply to these 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. The information contained in these 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 within the limitations of the data for which it was requested and prepared, 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. Woolpert 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 a Woolpert server, and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully upon Woolpert's computer system, no warranty, expressed or implied, is made regarding the utility of the data on another system, or 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. Microsoft Windows 10; Esri ArcCatalog v10.4; Esri ArcMap 10.4; IPAS Pro v.1.35; LP360 v2018.1.57.4; Leica CloudPro 1.2.4; Novatel Inertial Explorer v8.60.6129; POSPac Software v. 5.3; TerraMatch v18; TerraModeler v18; TerraScan v18. Data covers the entire area specified for this project. These LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. Accuracy testing was performed on a per-UTM zone basis. The project specifications require that only Non-Vegetated Vertical Accuracy (NVA) be computed for raw lidar point cloud swath files. The required accuracy (ACCz) is: 19.6 cm at a 95% confidence level, derived according to NSSDA, i.e., based on RMSE of 10 cm in non-vegetated land cover classes. For the OK Panhandle + OK City UTM z14 AOIs, the NVA was tested with 125 checkpoints located in bare earth and urban (non-vegetated) areas across the UTM z14 project areas. These check points were not used in the calibration or post processing of the lidar point cloud data. The checkpoints were distributed throughout the project area and were surveyed using GPS techniques. See survey report for additional survey methodologies. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the lidar surface were then compared to the elevation values of the surveyed control points. AccuracyZ has been tested to meet 19.6 cm or better Non-Vegetated Vertical Accuracy at 95% confidence level using RMSE(z) x 1.9600 as defined by the National Standard for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines. 0.088 Accuracy testing was performed on a per-UTM zone basis. For the OK Panhandle + OK City UTM z14 AOIs, the data tested 0.088 meters NVA at a 95% confidence level using RMSE(z) 0.045 x 1.9600 as defined by the National Standard for Spatial Data Accuracy (NSSDA). The NVA of the raw lidar point cloud swath files was calculated against TINs derived from the final calibrated and controlled swath data using 125 independent checkpoints located in non-vegetated land cover categories across the UTM z14 project areas. Woolpert 20191115 Lidar point cloud Dayton, OH Woolpert Digital data 20190130 20190307 ground condition OK Panhandle 2018 D18 - Lidar Point Cloud Data This dataset includes airborne lidar data point cloud data acquired as part of this task order. This data was used to create the required derivative lidar products. Woolpert 20191115 Vector digital data and tabular digital data Dayton, OH Woolpert Digital data 20181023 20181108 ground condition OK Panhandle 2018 D18 - Surveyed Control Points This dataset includes ground control and QA/QC checkpoints collected as part of this task order. These points were used in the calibration and accuracy testing of the lidar point cloud and DEM data. Woolpert 20191115 Vector digital data Dayton, OH Woolpert Digital data 20191115 ground condition OK Panhandle 2018 D18 - Breaklines This dataset includes hydro breaklines collected as part of this task order. Woolpert 20191115 Vector digital data Dayton, OH Woolpert Digital data 20191115 ground condition OK Panhandle 2018 D18 - Data Extent The data extent was created in shapefile format. The shapefile was buffered by 100-meters. It was used in acquisition planning and to clip the final deliverable data. Woolpert 20191115 Vector digital data Dayton, OH Woolpert Digital data 20191115 ground condition OK Panhandle 2018 D18 - Tile Index The tile index was created in shapefile format. Tiles have a size of 1,500-meters x 1,500-meters. Tile names were derived from the US National Grid. This index was used to create the tiled deliverables for this project. Lidar Point Cloud Classification: 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 Processed, but Unclassified (Class 1), Bare Earth Ground (Class 2), Low Noise (Class 7), Water (Class 9), Bridge Decks (Class 17), High Noise (Class 18) and Ignored Ground (Class 20). 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. After the bare-earth surface is finalized, it is then used to generate all hydro-breaklines through a semi-automated process. All ground (Class 2) lidar data inside of the Lake Pond and Double Line Drain hydro flattening breaklines were then classified to water (Class 9) using TerraScan/LP360 macro functionality. A buffer of 0.7 meters was also used around each hydro-flattened feature to classify these ground (Class 2) points to Ignored ground (Class 20). All Lake Pond Island and Double Line Drain Island features were checked to ensure that the ground (Class 2) points were reclassified to the correct classification after the automated classification was completed. All overlap data was processed through automated functionality provided by TerraScan to classify the overlapping flight line data to approved classes by USGS. The overlap data was classified using standard LAS overlap bit. These classes were created through automated processes only and were not verified for classification accuracy. Due to software limitations within TerraScan, these classes were used to trip the withheld bit within various software packages. These processes were reviewed and accepted by USGS through numerous conference calls and pilot study areas. All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper was used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files for both the All Point Cloud Data and the Bare Earth. Woolpert proprietary software and LP360 was used to perform final statistical analysis of the classes in the LAS files, on a per tile level to verify final classification metrics and full LAS header information. OK Panhandle 2018 D18 - Lidar Point Cloud Data OK Panhandle 2018 D18- Surveyed Control Points OK Panhandle 2018 D18 - Data Extent OK Panhandle 2018 D18 - Tile Index 20191115 Point Universal Transverse Mercator 14 0.9996 -99.0 0.0 500000.0 0.0 coordinate pair 0.01 0.01 meters North American Datum of 1983 (2011) Geodetic Reference System 1980 6378137.0 298.257222101 North American Vertical Datum of 1988 0.01 meters Explicit elevation coordinate included with horizontal coordinates 20191115 Woolpert mailing and physical

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