William R. Jones 20250310 remote-sensing image https://doi.org/10.5066/P148XHSQ This TX_LowerRioGrande_D22 project called for the planning, acquisition, processing, and derivative products of lidar data to be collected at an aggregate nominal pulse spacing (ANPS) of 0.18 meters (30 ppsm) and 0.35 meters (8ppsm). Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification 2022 Rev A. The data was developed based on a horizontal projection/datum of NAD83 (2011), UTM14N (EPSG 6343), meters and vertical datum of NAVD88 (GEOID18), meters. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to individual 500 m x 500 m tiles for the 30 ppsm AOI and 1000 m x 1000 m tiles for the 8 ppsm AOI, and as tiled intensity imagery and tiled bare earth Digital Elevation Models (DEM); all tiled to the same schemas. Swath separation images, maximum height surface rasters, hydro-flattening breaklines, building footprints, building models, vegetation canopy rasters, and ortho imagery (10 cm and 20cm GSDs) were also included in deliverables. This high resolution lidar data will support the United States Geological Survey (USGS) initiatives. USGS Contract No. 140G0221D0010 CONTRACTOR: Fugro USA Land, Inc. SUBCONTRACTOR: Terrasurv, Inc. Ground control and checkpoints collected by Terrasurv, Inc. All processing was completed by the prime contractor. Raster File Type = GeoTIFF Bit Depth/Pixel Type = 8-bit integer Raster Cell Size = 0.10 meter Author ORCIDs: Jones, W.R.(0000-0002-5493-4138) 20230122 20230303 ground condition Complete None planned -98.8175 -97.1906 26.6057 25.9759 None Model LAS Point Cloud Classified LAS Swath LAS Remote Sensing Elevation Data Lidar Digital Elevation Model Breaklines Intensity Images Orthoimage Orthophoto USGS Metadata Identifier USGS:67aa0cc7d34e329fb20433f7 Geographic Names Information System Texas Cameron County Hidalgo County Willacy County Starr 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be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions.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. Any conclusions drawn from the analysis of this information are not the responsibility of the U.S. Geological Survey or its partners. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. Fugro Suzee Parsons Mailing and physical address

4991 New Design Rd Ste 105

Frederick MD 21703 USA (301)-948-8550 (301)-963-2064 s.parsons@fugro.com POSPac 8.7 PP-RTX; ArcMap 10.6; Global Mapper 17.1.2; ERDAS Imagine 2016; PhotoShop CS8; Fugro proprietary software; Catalyst Ortho Engine 2222.0.7 2022-07-27; Windows 10 64-bit Operating System. To ensure data accuracy, data was visually inspected. Compliance with the accuracy standard was ensured by the collection of ground control and utilization of a web based GNSS correction service of a global network of tracking stations to compute corrections of satellite ephemeris, clock information and atmospheric models. Using this method, cm-level trajectory accuracy without the use of local base-stations would produce unusable data. The following checks were performed: 1) The imagery data accuracy was validated by performing an aerotriangulation adjustment with ground control prior to generating an ortho rectified mosaic or other products. 2) Ortho rectified data was validated through an inspection of edge matching and visual inspection for quality (artifact removal). The following software was used for the validation: ArcMap 10.6; Global Mapper 17.1.2; Catalyst Ortho Engine 2222.0.7 2022-07-27; Fugro proprietary software. A complete iteration of processing (GNSS/IMU Processing, Raw Image Data Processing, and Verification of Coverage and Data Quality) was performed to ensure that the acquired data was complete, uncorrupted, and that the entire project area had been covered without gaps between flight lines. Orthoimagery files cover the entire project delivery boundary. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The orthoimagery product is of good quality. This data was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 20(cm) RMSEx/RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 48.9 cm at 95% confidence level. Fugro 20240209 remote-sensing image Fugro; Rapid City, SD Fugro; Aviation Department External hard drive 20230122 20230125 20230126 20230131 20230204 20230205 20230210 20230211 20230214 20230218 20230221 20230222 20230223 20230227 20230228 20230303 ground condition Aerial Imagery Acquisition Fugro collected 4 band imagery from January 22, 2023 through March 3, 2023 for the TX_LowerRioGrande_D22 project AOI with 0.10 meters and 0.20 meters GSD. Data was collected when environmental conditions met criteria approved by the USGS for this project. The collection for this project was accomplished in 20 collections. Terrasurv, Inc. 20230209 Vector digital data and tabular digital data Electronic mail system 20230112 20230209 ground condition Ground Control Under Fugro’s direction, all surveying activities were performed by Fugro's approved ID/IQ subcontractor Terrasurv, Inc. A total of 87 ground control points to support the lidar collection, along with 129 NVA and 101 VVA lidar checkpoints were collected. An additional 35 control points and 44 checkpoints were also collected, to support the ortho imagery only. The National Spatial Reference System (NSRS) was used to provide control for the network. Eleven Continuously Operating Reference Stations (CORS) were included in the network. The horizontal datum was the North American Datum of 1983 – NAD83 (2011), epoch 2010.0. The vertical datum was the North American Vertical Datum of 1988 (NAVD88), realized with GEOID18. The Catalyst software was used for preparing imagery collected with the Phase One Digital Sensor for softcopy photogrammetric use. After the GNSS solution was checked and verified, an integrated GNSS/IMU navigation solution was computed. Utilizing the camera calibration the GNSS/IMU trajectory, a full x, y, z, omega, phi, kappa exterior orientation of each image frame was computed. To improve accuracy, a fully automatic aerotriangulation process was performed to minimize the residual errors in the GNSS/IMU derived exterior orientations. The aerotriangulation also allowed the introduction of ground control to ensure the accuracy specifications were achieved. 20230720 Fugro Suzee Parsons Mailing and physical address

4991 New Design Rd Ste 105

Frederick MD 21703 USA (301)-948-8550 (301)-963-2064 s.parsons@fugro.com A digital elevation model (DEM) is required for rectified imagery. A hydro-flattened bare earth DEM was generated using existing LiDAR bare earth points. To minimize image distortion the DEM is manually edited where buildings, forest edges, water, etc. exist. The resulting digital elevation model (DEM) is used in the rectification of the orthoimagery. 20230721 Fugro Suzee Parsons Mailing and physical address

4991 New Design Rd Ste 105

Frederick MD 21703 USA (301)-948-8550 (301)-963-2064 s.parsons@fugro.com Ortho-rectified frames are then mosaicked together using Catalyst software. The data was checked for coverage, seam lines, smears, and other artifacts. The imagery was clipped out of the database into the tile layout generated based on client requirements. In the clipping stage, the coordinate system and georeferencing was embedded into the header of the files. A final visual check was performed on each tile looking for indications of problems within the creation process. Delivered products include: 1) Digital ortho-rectified imagery comprising of 4-band (R,G,B, NIR) digital orthos at 10 cm ground sample distance in GeoTIFF and MrSID formats. 20240201 Fugro Suzee Parsons Mailing and physical address

4991 New Design Rd Ste 105

Frederick MD 21703 USA (301)-948-8550 (301)-963-2064 s.parsons@fugro.com Raster Grid Cell 5000 5000 Universal Transverse Mercator 14 0.9996 -99.00000000 0.0 500000 0.0 row and column .01 .01 meters North American Datum of 1983 (National Spatial Reference System 2011) Geodetic Reference System 80 6378137 298.257222101 North American Vertical Datum of 1988, GEOID18 0.01 meters Explicit elevation coordinate included with horizontal coordinates 300257_Imagery.zip Zip file containing all the tiffs and tiff world files for the area where the center is 300257 of the National Grid Units Producer defined 300360_orthoimagery.zip Zip file containing all the tiffs and tiff world files for the area where the center is 300360 of the National Grid Units Producer Defined 300446_orthoimagery.zip Zip file containing all the tiffs and tiff world files for the area where the center is 300446 of the National Grid Units Producer Defined 300469_orthoimagery.zip Zip file containing all the tiffs and tiff world files for the area where the center is 300469 of the National Grid Units Producer Defined U.S. Geological Survey - ScienceBase mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P148XHSQ None 20250310 20240209 Fugro Suzee Parsons Mailing and physical address

4991 New Design Rd Ste 105

Frederick MD 21703 USA (301)-948-8550 (301)-963-2064 s.parsons@fugro.com FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 None None None Unclassified None None None