Metadata: Identification_Information: Citation: Citation_Information: Originator: Amit Millo Originator: Sandra M. Brosnahan Originator: Seth D. Ackerman Originator: Jin-Si R. Over Originator: Jennifer M. Cramer Publication_Date: 20260602 Title: Lidar point clouds (LPC), elevation models, GPS data, image mosaics, vegetation survey, and aerial images from natural color (RGB) and multispectral cameras collected during UAS operations at Lower Darby Creek, Darby Township, Pennsylvania, August 2025 Edition: 1.0 Geospatial_Data_Presentation_Form: digital image, point cloud, raster, and tabular digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13TQ8E7 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Online_Linkage: https://doi.org/10.5066/P13TQ8E7 Online_Linkage: https://www.sciencebase.gov/catalog/item/69839c3db66b01367d7ecd79 Larger_Work_Citation: Citation_Information: Originator: Amit Millo Originator: Sandra M. Brosnahan Originator: Seth D. Ackerman Originator: Jin-Si R. Over Originator: Jennifer M. Cramer Publication_Date: 2026 Title: Topographic data, aerial imagery, and GPS data collected during uncrewed aircraft system (UAS) operations at Lower Darby Creek, Darby Township, Pennsylvania, March to August 2025 Edition: 1.0 Geospatial_Data_Presentation_Form: digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13TQ8E7 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Millo, A., Brosnahan, S.M., Ackerman, S.D., Over, J.R., and Cramer, J.M., 2026, Topographic data, aerial imagery, and GPS data collected during uncrewed aircraft system (UAS) operations at Lower Darby Creek, Darby Township, Pennsylvania, March to August 2025: U.S. Geological Survey data release, https://doi.org/10.5066/P13TQ8E7 Online_Linkage: https://doi.org/10.5066/P13TQ8E7 Online_Linkage: https://www.sciencebase.gov/catalog/item/69612fbcd4be02298529c536 Description: Abstract: The U.S. Geological Survey deployed small uncrewed aircraft systems (sUAS) to collect aerial remote sensing data across sites within the Lower Darby Creek Superfund Site ~5 miles outside of Philadelphia, PA in March and August of 2025. March datasets include aerial images from natural color (RGB) and raw lidar of the Clearview Landfill superfund site. August datasets include aerial images from natural color (RGB), multispectral sensors, and raw lidar over the Clearview Landfill. These datasets were processed to produce high resolution digital elevation models (DEM), image mosaics, and a lidar point cloud (LPC). Black and white cross-coded ground control points (GCPs) were surveyed using Real Time Kinematic (RTK) GPS and RTK-GPS enabled AeroPoints to georeference the model and orthomosaics during post-processing. The elevation and imagery products were produced to help partners at the Environmental Protection Agency (EPA) acquire accurate elevation data for target sites during the winter "leaf-off" period (March) and monitor changes in vegetation cover during peak growing season (August) building a baseline conditions dataset starting in August 2023. Future data collections are planned to support long-term monitoring of landscape change resulting from remediation efforts and potential storm impacts. Purpose: Lidar data were collected to penetrate vegetation canopy and provide accurate digital surface models (DSMs) during the peak-foliage season. Aerial imagery was collected with appropriate resolution and overlap to permit high-quality photogrammetry and generation of digital surface models (DSM) and orthoimagery. Supplemental_Information: These data were collected by the USGS Coastal and Marine Hazards and Resources Program under USGS field activity number 2025-011-FA. The field activity webpage (https://cmgds.marine.usgs.gov/services/activity.php?fan=2025-011-FA) contains additional information regarding the field activity. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20250805 Ending_Date: 20250807 Currentness_Reference: Ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.258437 East_Bounding_Coordinate: -75.249632 North_Bounding_Coordinate: 39.907135 South_Bounding_Coordinate: 39.898376 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: MicaSense Altum-PT Theme_Keyword: DJI Matrice 600 Theme_Keyword: Wingtra Lidar Theme_Keyword: Wingtra MAP61 Theme_Keyword: UAS Theme_Keyword: WingtraOne GEN II Theme_Keyword: Lidar Point Cloud Theme_Keyword: UAS Theme_Keyword: Aerial Images Theme_Keyword: Multispectral Theme_Keyword: JPEG Theme_Keyword: TIFF Theme_Keyword: Digital Surface Model (DSM) Theme_Keyword: Orthomosaic Theme_Keyword: Emlid RS2+ Theme_Keyword: Emlid RS3 Theme_Keyword: RTK GPS Theme_Keyword: AeroPoints Theme_Keyword: Vegetation Survey Theme_Keyword: Aerial Imaging and Mapping Group Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: remote sensing Theme_Keyword: lidar Theme_Keyword: visible light imaging Theme_Keyword: digital elevation models Theme_Keyword: structure from motion Theme_Keyword: image mosaics Theme_Keyword: geospatial datasets Theme_Keyword: multispectral imaging Theme_Keyword: image collections Theme_Keyword: GPS measurement Theme_Keyword: navigational data Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: elevation Theme_Keyword: environment Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:69839c3db66b01367d7ecd79 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Commonwealth of Pennsylvania (1779798) Place_Keyword: Philadelphia County (1209187) Place_Keyword: Township of Darby (1216381) Place_Keyword: Darby Creek(1172928) Place: Place_Keyword_Thesaurus: None Place_Keyword: North America Place_Keyword: United States Place_Keyword: Pennsylvania (PA) Place_Keyword: Lower Darby Creek Place_Keyword: Clearview Landfill Access_Constraints: No access constraints. Please see 'Distribution Information' for details. Use_Constraints: These data are marked with a Creative Commons CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. These data are not intended to be used for navigation. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amit Millo Contact_Organization: U.S. Geological Survey, Northeast Region, Woods Hole Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2223 Contact_Electronic_Mail_Address: amillo@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/69839c3db66b01367d7ecd79?name=2025AugustDarbyChildPage.jpg&allowOpen=true Browse_Graphic_File_Description: Sample of data collected during August 2025 field session. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Agisoft Metashape Pro v. 2.3.0, Trimble PosPac UAV v. 9.0, WingtraHub v. 2.20.2, Wingtra LIDAR app v. 1.10.1.0, Global Mapper Pro v. 26.1 Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Andrew C. Ritchie Originator: Christine J. Kranenburg Originator: Jenna A. Brown Originator: Daniel D. Buscombe Originator: Tom Noble Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. Wernette Publication_Date: 2021 Title: Processing coastal imagery with Agisoft Metashape Professional Edition, version 1.6-Structure from motion workflow documentation Series_Information: Series_Name: Open-File Report Issue_Identification: 2021-1039 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication includes the general methodology for processing imagery in Metashape to produce digital surface models and ortho products. Online_Linkage: https://doi.org/10.3133/ofr20211039 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: GPS: The theoretical internal accuracy of the Emlid RS3 is 2 cm. Points were assumed to be within that tolerance after staking out a known reference mark and the values were within 2 cm. The vertical and horizontal root mean square errors (RMS) for each point were also reported in 2025011FA_Clearview_Aug_Emlid_RTK.csv. The AeroPoint2 GCPs have an internal reported variance provided in 2025011FA_Clearview_Aug_GCP.csv, the global accuracy was calculated and reported below by adding the variance to twice the longest baseline distance. Some AeroPoint2s were also surveyed by the RS3. The CID CI-110 GPS data provided in 2025011FA_Clearview_Aug_VegSurvey.csv has an internal accuracy of 5 m and does not provide elevation data. GeoTIFFs: The horizontal and vertical accuracy of the products (2025011FA_Clearview_Aug_WLDR_DSM_10cm.tif, 2025011FA_Clearview_Aug_aPT_Ortho_5cm.tif, and 2025011FA_Clearview_Aug_MAP61_Ortho_5cm.tif) were assessed using the AeroPoint2 ground control points (GCPs) and checkshots. It should also be noted that accuracy estimates of the products are for areas of bare ground or low vegetation where GCPs were placed or checkshots taken. Additional sources of error, such as moving objects, may cause accuracy estimates to exceed estimates in localized portions of the products. Lidar: The point cloud (2025011FA_Clearview_Aug_WLDR_LPC.laz) positional accuracy is based on the GPS/IMU and post positional corrections from the base station but the vertical point spread on a flat surface is about 8 cm. The LPC was colorized from the MAP61 Structure-from-Motion (SfM) orthomosaic. Some misalignment in the collected lidar strips may occur. Lidar does not pass through water. Users are advised to evaluate the data for their own needs. Logical_Consistency_Report: There were eight UAS flights and 15 AeroPoint2 GCPs. Flight one and two (57 min) used the MAP61 camera module on the WingtraOne GEN II to collect RGB images that were used to generate the orthomosaic. Flight three was not used to collect data. Flight four through seven (60 min) were flown with the M600 and the aPT multispectral camera. Flight eight (45 min) was flown again with the WingtraOne GEN II, but with the lidar sensor (WLDR) and produced the lidar point cloud (LPC) and digital surface model (DSM). No digital terrain model was produced because the vegetation was too thick to reach the ground through much of the canopy. An Emlid RS2+ was set up as a base station and an Emlid RS3 GPS unit was used to collect checkshots. Completeness_Report: Imagery: The MAP61 camera triggered based on GNSS location, but roughly every 2 seconds. Images were only taken over the area of interest for a total of 1467 MAP61 images. The aPT was flown at 6 meters/second and triggered every 1.5 seconds to capture enough overlap between the photos (75% overlap). This resulted in 14616 usable images (including calibration photos). Products: GeoTIFF products are cloud-optimized and deflate compressed. The LPC has been cleaned in Global Mapper to obvious noise (like birds). Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Images: The Wingtra MAP61 images were geotagged in WingtraHub v. 2.18.0 using base station data and had an average xy accuracy of 0.03 m. GPS: Emlid RS3 GPS points have an xy RMS (precision) average of 1.7 cm. AeroPoint2 horizontal global accuracy is 4.8 mm. Lidar: The lidar point cloud, and by association the DSM, horizontal accuracy was assessed against positions of the AeroPoint2s in the lidar intensity view (not the RGB). The horizontal accuracy is variable and within 10 cm. SfM: The orthomosaics were created using SfM and georeferenced as a result of using geotagged aerial images (done so in WingtraHub or onboard the Altum-PT). The horizontal average camera location errors as reported from the Wingta Metashape project was long/lat 0.016/0.015 m, and for the Altum-PT Metashape project was long/lat 0.016/0.008 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Images: The MAP61 images were geotagged in WingtraHub v. 2.18.0 using the base station data and had an average x/y accuracy of 0.02m and z accuracy of 0.03 m. GPS: Emlid RS3 GPS points have a z RMS (precision) average of 1.2 cm. AeroPoint2 global vertical accuracy is 5.6 mm. Lidar: The DSM was assessed against the elevations of the AeroPoint2s and RS3 checkshots that were taken on flat surfaces (i.e., roads and walkways with no nearby vegetation): the RMSE (n=382) was 0.04 m. Lineage: Process_Step: Process_Description: GROUND CONTROL: Over the two days of data collection, 15 AeroPoint2 GCPs were spaced out over the field site and left on for at least 30 minutes to collect GNSS data. After collection the AeroPoint2s data were uploaded via a Wi-Fi connection and run through a post-processing kinematic algorithm of the Propeller network to get corrected positions. The data were exported in NAD83(2011) (EPSG:6318) to produce latitude, longitude, and ellipsoid heights, and then NAD83(2011)/UTM zone 18N (EPSG:6347) and NAVD88 (EPSP:5703) with GEOID 18 to produce easting and northing and orthometric heights. These were exported to a CSV file and named 2025011FA_Clearview_Aug_GCP.csv. An Emlid RS2+ was set up as a base station using an RTK FIX on the highest section of boardwalk to record GNSS data for post processing the lidar data. An Emlid RS3 with tilt compensation was connected to the base to take RTK instant checkshots around the landfill. These data were provided in 2025011FA_Clearview_Aug_Emlid_RTK.csv. UAS FLIGHTS: The lidar sensor (WLDR) was a 905 nm wavelength Hesai XT32-M2X with a 90 / 40.3 degree horizontal and vertical field of view (FOV). It is a rotating sensor, generating up to three returns with an effective point rate for a single return of 160k pts/s. The camera module uses the Wingtra MAP61 61-megapixel (MP) camera with a 17 mm lens. The system uses a NovAtel OEM7500 multi-frequency, high precision GNSS receiver. The lidar data was saved to the 256 GB thumb drive in 13 different *.data files. The RGB images are saved as *.JPG files. The lidar data were collected with the Wingtra UAS flying 61 meters above ground level with northeast-southwest transect passes. The camera module was set to take images based on GNSS coordinates calculated by Wingtra based on the flight area. After the flights the lidar and RGB data were taken off their respective sensor. Multispectral aerial images were collected using a MicaSense Altum-PT (aPT) mounted to a DJI M600. The aPT contains seven sensors: five multispectral bands, blue (443-507 nanometers (nm)), green (533-587 nm), red (652-684 nm), red edge (705-729 nm), and near-infrared (NIR) (785-899 nm), one panchromatic band (171.5 nm - 1098 nm), and one long-wave infrared (LWIR) thermal band (4.5 - 16.5 microns). The LWIR band images were not used in any processing workflows and were excluded from this data release. The flight plan settings included a flight altitude of 61 m, a velocity of 5 m/s, a transect spacing of 20 meters and a camera trigger interval of 3 seconds. Immediately prior to and following each flight, a MicaSense reflectance calibration panel is photographed on the ground in order to perform a reflectance calibration of the imagery in post-processing to account for illumination conditions over the course of the survey. The images are saved to a CF Express type B SD card in TIFF format as they are collected. Note, the geotagged positions embedded in the imagery Exif information were in EPSG:4326, this is the only option in the software. The positions were converted to EPSG:6347 and EPSG:5703 in the imagery locations file (2025011FA_Clearview_Aug_ImageryLocations.csv) and were accounted for when transforming to EPSG:6347 and EPSG:5703 in the products. Process_Date: 20260805 Process_Step: Process_Description: RAW IMAGERY: The W1G2 images were geotagged in WingtraHub using the base station RINEX file and OPUS corrected location of the base. The aPT images were geotagged internally during the flight. All images were processed to add additional information required by the USGS to the Exif headers using ExifTools (https://exiftool.org/, version: 12.06), and the files were renamed to a unique identifier to avoid any possibility of duplicate names. These steps are described here. 1. ExifTools was used to tag each photo headers following the Imagery Data System EXIF Guidance. Attributes (e.g. Credit, Copyright, UsageTerms, ImageDescription, Artist, etc.) were stored in a csv file and written to each image with the command:' exiftool -csv="C:\directory\name\EXIF.csv" C:\directory\name\of\photos *.JPG ' To read out the photo information to a csv when in the directory with the photos the command is: exiftool -csv *.JPG > directory\name\allheaders_out.csv 2. All the images were renamed using a Python script to ensure unique filenames and compliance with the USGS Coastal and Marine Hazards and Resources Program's best practices for image naming convention. Images were renamed with the field survey ID prefix; flight number, and ID that distinguishes USGS cameras by make/camera number, the image acquisition date, coordinated universal time (UTC) in ISO8601 format, and a suffix with the original image name. For example, image name '2025011FA_f01MAP61_20250805T144737Z_#####', 2025011FA is the field activity ID; f01 is the flight number for that day; MAP61 is the camera used; 20250805 is the UTC date in the format YYYYMMDD, and a 'T' is used to separate UTC date from UTC time in format HHMMSS followed by a Z. The ##### is the original raw photo suffix (i.e. 12345 or IMG_1111) appended to the end of the new filename. 3. Images are validated and uploaded onto the Imagery Data System. Process_Date: 20260420 Process_Step: Process_Description: PHOTOGRAMMETRY: The ortho product was created in Agisoft Metashape v. 2.3.0 using the following general steps (see Over and others, 2021 for a more detailed SfM methodology explanation): 1. A project was created and imagery was imported along with a csv file containing the following information about the camera when the image was taken: latitude/longitude (WGS84), ellipsoid altitude (m), vertical and horizontal accuracy (m), omega/phi/kappa (°), and accuracy (°). 2. Photos were aligned at a high accuracy using a keypoint limit of 60,000 and unlimited tie points. 3. The alignment process matched pixels between images to create point clouds and put the imagery into a relative spatial context using the PPK geotagged image locations. The resultant point clouds were filtered using one iteration of the 'Reconstruction uncertainty' filter at a level of 10, one iteration of the 'Projection accuracy' filter at a level of 10, and multiple iterations of the 'Reprojection accuracy' filter to get to a level of 0.3. With each filter, iteration points are selected, deleted, and then the camera model was optimized to refine the focal length, cx, cy, k1, k2, k3, p1, and p2 camera model coefficients. 4. In a new chunk, a high-quality dense cloud with a low-frequency filtering algorithm was made. The dense point cloud was then edited by visual inspection to remove points with a low confidence near the edges and near water bodies. 5. An interpolated DSM was built from the dense point cloud and then an orthomosaic was built from the DSM with refined seamlines. This DSM was then used to generate the orthomosiac, which consists of 3-bands and was exported at 5 cm resolution (2025011FA_Clearview_Aug_MAP61_Ortho_5cm.tif). 6. For the multispectral data, a band transform was performed to change the pixels values from digital number values to units of reflectance. The transformation was to divide the value of each band by 32768 (i.e., half the bit-depth). Process_Date: 20251201 Process_Step: Process_Description: LIDAR DATA: The lidar data were processed in the Wingtra LIDAR app. The .data files were uploaded into the app along with the base station RINEX *.25O file. The OPUS corrected location of the base and the ARP-APC offset were then entered manually. After the processing was complete, the start and end location of each transect were manually identified to clip the paths and remove points obtained when the aircraft was turning. This point cloud product was exported from the Wingtra LIDAR app and was brought into Global Mapper (GM) and manually cleaned of points interpreted to be noise. The LPC was colorized in GM with the SfM orthomosaic. Then, the LPC was gridded at 10 cm into a DSM using maximum values binning grid method and the setting 'Grid "No Data" Distance' set to 0, the resulting file was exported as 2025011FA_Clearview_Aug_WLDR_DSM_10cm.tif. The LPC was exported as 2025011FA_Clearview_Aug_WLDR_LPC.laz. All files were exported in EPSG:6347 and EPSG:5703 using GEOID 18. Process_Date: 20250816 Process_Step: Process_Description: CLOUD OPTIMIZATION: The DSM and DTM were deflate compressed and turned into a cloud-optimized GeoTIFF (cog) using gdal_translate with the following command: for %i in (.\*.tif) do gdal_translate %i .\cog\%~ni_cog.tif -of COG -stats -co BLOCKSIZE=256 -co COMPRESS=DEFLATE -co PREDICTOR=YES -co NUM_THREADS=ALL_CPUS -co BIGTIFF=YES (v. 3.1.4 accessed October 20, 2020 https://gdal.org/). Where i is the name of each GeoTIFF section. The orthomosaic was JPEG compressed and turned into a cog using gdal_translate with the following command: for %i in (.\*.tif) do gdal_translate %i .\%~ni_cog.tif -of COG -stats -co BLOCKSIZE=256 -co COMPRESS=JPEG -co QUALITY=90 -co PREDICTOR=YES -co NUM_THREADS=ALL_CPUS -co BIGTIFF=YES Process_Date: 20260220 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amit Millo Contact_Organization: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2223 Contact_Electronic_Mail_Address: amillo@usgs.gov Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -75.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.001 Ordinate_Resolution: 0.001 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 (National Spatial Reference System 2011) Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.001 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_ImageryLocations.csv Entity_Type_Definition: The CSV file contains the approximate position of the W1G2 MAP61 images at the moment of each capture based on post-processed UAS integrated GPS. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: ImageName Attribute_Definition: File names of individual images, see the Process Description for file naming convention. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: GPSDateTime Attribute_Definition: Date and time of each image in the format YYYY:MM:DD HH:MM:SSZ where YYYY is the four-digit year, MM the two-digit month, DD the two-digit day, HH two-digit the hour, MM two-digit the minute, SS two-digit the seconds, and a Z follows at the end to represent Zulu time. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Latitude [EPSG:6319] Attribute_Definition: Latitude (y) in NAD83(2011) of camera based on time of each image capture. Positive values represent north coordinates. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39.89788992 Range_Domain_Maximum: 39.90816004 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Longitude [EPSG:6319] Attribute_Definition: Longitude (x) in NAD83(2011) of camera based on time of each image capture. Negative values represent west coordinates. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.25831025 Range_Domain_Maximum: -75.24931986 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Ellipsoid height (m) [GRS 1980] Attribute_Definition: Ellipsoid elevation (in meters) of the camera at time of each image capture. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 11.920 Range_Domain_Maximum: 95.273 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Easting (m) [EPSG:6347] Attribute_Definition: Easting coordinate in NAD83(2011) / UTM zone 18N of the image in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 477919.1971 Range_Domain_Maximum: 478688.8508 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Northing (m) [EPSG:6347] Attribute_Definition: Northing coordinate in NAD83(2011) / UTM zone 18N of the image in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4416455.208 Range_Domain_Maximum: 4417594.667 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Orthometric height (m) [NAVD88, GEOID18] Attribute_Definition: Orthometric elevation in meters of the camera at time of each image capture. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 44.8839170 Range_Domain_Maximum: 128.2389029 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_GCP.csv Entity_Type_Definition: Comma Separated Value (CSV) file containing GNSS data aquired by the AeroPoint2s. Entity_Type_Definition_Source: Producer Defined Attribute: Attribute_Label: FAN Attribute_Definition: USGS Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2025-011-FA Enumerated_Domain_Value_Definition: Year, USGS ID, and Field Activity Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Date Attribute_Definition: Date of each image in the format YYYYMMDD where YYYY is the four-digit year, MM the two-digit month, DD the two-digit day. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20250805 Range_Domain_Maximum: 20250806 Attribute: Attribute_Label: Point ID Attribute_Definition: Abbreviated reference for each Aeropoint2 datapoint used in this field session. A points were collected on day one and B points were collected on day two. The number following the letter is unique per day. Attribute_Definition_Source: Processor defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Aeropoint ID Attribute_Definition: Unique identifier for ground control points. Attribute_Definition_Source: Processor defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Easting (m) [EPSG:6347] Attribute_Definition: Post-processed X-coordinate of AeroPoint2 in NAD83(2011)/UTM Zone 18N Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 478023.613 Range_Domain_Maximum: 478462.597 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Northing (m) [EPSG:6347] Attribute_Definition: Post-processed Y-coordinate of AeroPoint2 in NAD83(2011)/UTM Zone 18N. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4416639.749 Range_Domain_Maximum: 4417377.219 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Orthometric height (m) [NAVD88, GEOID18] Attribute_Definition: Post-processed Z-coordinate of AeroPoint2 using NAVD88 with GEOID 18 applied. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.982 Range_Domain_Maximum: 31.552 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Latitude [EPSG:6319] Attribute_Definition: Post-processed latitude of AeroPoint2 position in NAD83(2011). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39.89955 Range_Domain_Maximum: 39.90620 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Longitude [EPSG:6319] Attribute_Definition: Post-processed longitude of AeroPoint2 position in NAD83(2011). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.25709 Range_Domain_Maximum: -75.25196 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Ellipsoid height (m) [GRS 1980] Attribute_Definition: Post-processed height in meters of AeroPoint2 in relation to the NAD83(2011) reference ellipsoid GRS80. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -27.984 Range_Domain_Maximum: -1.413 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: X variance (mm) Attribute_Definition: Variance in the X-coordinate from post-processing Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.0 Range_Domain_Maximum: 8.3 Attribute_Units_of_Measure: millimeters Attribute: Attribute_Label: Y variance (mm) Attribute_Definition: Variance in the Y-coordinate from post-processing Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.9 Range_Domain_Maximum: 6.5 Attribute_Units_of_Measure: millimeters Attribute: Attribute_Label: Z variance (mm) Attribute_Definition: Variance in the Z-coordinate from post-processing Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.7 Range_Domain_Maximum: 8.3 Attribute_Units_of_Measure: millimeters Attribute: Attribute_Label: Baseline distance (km) Attribute_Definition: Distance of AeroPoint2 from nearest used processing network base station Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.08 Range_Domain_Maximum: 14.09 Attribute_Units_of_Measure: kilometers Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_VegSurvey.csv Entity_Type_Definition: Vegetation survey data taken on August 6, 2025 within the boundaries of the Clearview Landfill. Vegetation survey data was taken using the Emlid RS3. Tree survey data was taken with the CI-110, which has an internal GPS unit with 5 m accuracy that does not record elevations. Entity_Type_Definition_Source: Producer Defined Attribute: Attribute_Label: FAN Attribute_Definition: USGS Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2025-011-FA Enumerated_Domain_Value_Definition: Year, USGS ID, and Field Activity Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Point ID Attribute_Definition: VS# for vegetation survey performed visually, TS# for tree survey with CI-110, with # is the sequential survey number. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Date Attribute_Definition: Date of each datapoint in the format YYYYMMDD where YYYY is the four-digit year, MM the two-digit month, DD the two-digit day. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20250326 Range_Domain_Maximum: 20250327 Attribute: Attribute_Label: Time [UTC-04:00] Attribute_Definition: Time in HH:MM:SS 24 hour format, where HH is the two-digit hours, MM is the two-digit minutes, and SS is the two-digit seconds. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Class Attribute_Definition: Classification label identifying the surface type of each feature (e.g., tree, low vegetation, metal) based on its overhead appearance. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Attributes Attribute_Definition: A more detailed description of the class explaining what exactly the object is. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Easting (m) [EPSG:6347] Attribute_Definition: Post-processed X-coordinate of checkshot in NAD83(2011)/UTM Zone 18N Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 478032.767 Range_Domain_Maximum: 478471.308 Attribute: Attribute_Label: Northing (m) [EPSG:6347] Attribute_Definition: Post-processed Y-coordinate of checkshot in NAD83(2011)/UTM Zone 18N Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4416913.96 Range_Domain_Maximum: 4417411.36 Attribute: Attribute_Label: Orthometric Height (m) [NAVD88, GEOID18] Attribute_Definition: Post-processed Z-coordinate of checkshot using NAVD88 with GEOID 18 applied. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.69 Range_Domain_Maximum: 27.97 Attribute: Attribute_Label: Latitude [EPSG:6319] Attribute_Definition: Post-processed latitude of checkshot position in NAD83(2011). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.25698 Range_Domain_Maximum: -75.25186 Attribute: Attribute_Label: Longitude [EPSG:6319] Attribute_Definition: Post-processed longitude of checkshot position in NAD83(2011). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39.90202 Range_Domain_Maximum: 39.90651 Attribute: Attribute_Label: Ellipsoid height (m) [GRS 1980] Attribute_Definition: Post-processed height in meters of checkshot in relation to the NAD83(2011) reference ellipsoid GRS80. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -32.96605 Range_Domain_Maximum: -5.00084 Attribute: Attribute_Label: Height Estimate (m) Attribute_Definition: An estimate of the height of the object being documented at the survey point. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 5.0 Attribute: Attribute_Label: PAR Average Attribute_Definition: Mean photosynthetically active radiation (PAR) value measured by the CID Bio-Science CI-110 Plant Canopy Imager across the sampling interval, expressed in µmol·m−2·s−1 Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 18 Range_Domain_Maximum: 511 Attribute: Attribute_Label: PAR LAI Attribute_Definition: Leaf Area Index (LAI) derived from photosynthetically active radiation (PAR) attenuation measurements captured by the CID Bio-Science CI-110 Plant Canopy Imager, representing canopy density as unitless leaf area per ground area. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.5111519 Range_Domain_Maximum: 7.9064827 Attribute: Attribute_Label: GAP Fraction LAI Attribute_Definition: Canopy gap fraction derived from Leaf Area Index (LAI) analysis using the CID Bio-Science CI-110 Plant Canopy Imager, representing the proportion of sky visible through the canopy. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.065222 Range_Domain_Maximum: 2.068472 Attribute: Attribute_Label: GAP Fraction Mean Leaf Angle Attribute_Definition: Mean leaf inclination angle estimated from canopy gap fraction measurements acquired by the CID Bio-Science CI-110 Plant Canopy Imager, representing the average orientation of leaves relative to the horizontal (degrees). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00617 Range_Domain_Maximum: 89.74454 Attribute_Units_of_Measure: degrees Attribute: Attribute_Label: GAP Fraction Transmission Coefficient Attribute_Definition: Canopy transmission coefficient derived from gap fraction measurements using the CID Bio-Science CI-110 Plant Canopy Imager, representing the proportion of incident radiation transmitted through the canopy (unitless). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.300180 Range_Domain_Maximum: 0.912832 Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_Emlid_RTK.csv Entity_Type_Definition: Comma Separated Value (CSV) file containing GNSS data obtained using the Emlid rover. Entity_Type_Definition_Source: Producer Defined Attribute: Attribute_Label: FAN Attribute_Definition: USGS Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2025-011-FA Enumerated_Domain_Value_Definition: Year, USGS ID, and Field Activity Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Date Attribute_Definition: Date of each image in the format YYYYMMDD where YYYY is the four-digit year, MM the two-digit month, DD the two-digit day. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20250805 Range_Domain_Maximum: 20250807 Attribute: Attribute_Label: Point ID Attribute_Definition: Abbreviated reference for each Aeropoint2 datapoint used in this field session. "A" represents that the points were collected day one and the number following the letter is unique per checkshot. The same format follows for points collected day two ("B") and three ("C"). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Attributes Attribute_Definition: Additional information assigned to each GPS checkshot while collecting that describes the purpose of that checkshot. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character string. Attribute: Attribute_Label: Easting (m) [EPSG:6347] Attribute_Definition: Post-processed X-coordinate of checkshot in NAD83(2011)/UTM Zone 18N Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 478023.293 Range_Domain_Maximum: 478552.372 Attribute_Units_of_Measure: meter Attribute: Attribute_Label: Northing (m) [EPSG:6347] Attribute_Definition: Post-processed Y-coordinate of checkshot in NAD83(2011)/UTM Zone 18N Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4416525.469 Range_Domain_Maximum: 4417411.362 Attribute_Units_of_Measure: meter Attribute: Attribute_Label: Orthometric height (m) [NAVD88, GEOID18] Attribute_Definition: Post-processed Z-coordinate of checkshot using NAVD88 with GEOID 18 applied. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.69 Range_Domain_Maximum: 33.01 Attribute_Units_of_Measure: meter Attribute: Attribute_Label: Latitude [EPSG:6319] Attribute_Definition: Post-processed latitude of checkshot position in NAD83(2011). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.25709419 Range_Domain_Maximum: -75.25091138 Attribute_Units_of_Measure: decimal degree Attribute: Attribute_Label: Longitude [EPSG:6319] Attribute_Definition: Post-processed longitude of checkshot position in NAD83(2011). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39.89852456 Range_Domain_Maximum: 39.90651022 Attribute_Units_of_Measure: decimal degree Attribute: Attribute_Label: Ellipsoid height (m) [GRS 1980] Attribute_Definition: Post-processed height in meters of checkshot in relation to the NAD83(2011) reference ellipsoid GRS80. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -30.277 Range_Domain_Maximum: 0.047 Attribute_Units_of_Measure: meter Attribute: Attribute_Label: Tilt angle (deg) Attribute_Definition: Angle to nadir of the Emlid RS3 Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 15.2 Attribute_Units_of_Measure: degree Attribute: Attribute_Label: Elevation RMS (m) Attribute_Definition: Root mean square in the Z-coordinate Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 0.03 Attribute_Units_of_Measure: meter Attribute: Attribute_Label: Lateral RMS (m) Attribute_Definition: Root mean square in the horizontal XY-coordinate Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.016 Range_Domain_Maximum: 0.019 Attribute_Units_of_Measure: meter Attribute: Attribute_Label: Baseline (m) Attribute_Definition: Straight line distance of checkshot from base station in meters. Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NA Enumerated_Domain_Value_Definition: No Data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.365 Range_Domain_Maximum: 556.535 Attribute_Units_of_Measure: meter Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_WLDR_LPC.laz Entity_Type_Definition: UAS lidar point cloud in *.laz v. 1.4 file format. This georeferenced point cloud was colorized using natural color RGB image values and is not classified. There are 180,278,855 points. Point density is 513.75 points per square meter and point spacing is 0.04412 m. Entity_Type_Definition_Source: Wingtra Attribute: Attribute_Label: Elevation Attribute_Definition: Surface elevation orthometric height NAVD88 (m) using Geoid 18 in NAD83(2011)/UTM Zone 18N. Attribute_Definition_Source: Wingtra Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.624 Range_Domain_Maximum: 37.144 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Return Number Attribute_Definition: Sequential index of a return within a single emitted pulse. Attribute_Definition_Source: Wingtra Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 3 Attribute: Attribute_Label: Scan Angle Attribute_Definition: Scan angle of the laser beam relative to nadir at the time of each return (degrees). Attribute_Definition_Source: Wingtra Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -44 Range_Domain_Maximum: 45 Attribute_Units_of_Measure: degrees Attribute: Attribute_Label: Point Source Attribute_Definition: Identifier of the originating lidar acquisition source. Attribute_Definition_Source: Wingtra Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 31 Attribute: Attribute_Label: Intensity Attribute_Definition: Lidar intensity is recorded as the return strength of a laser beam during data collection. Attribute_Definition_Source: Wingtra Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_MAP61_Ortho_5cm.tif Entity_Type_Definition: Cloud-optimized JPEG compressed true-color orthomosaic. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Band_1 Attribute_Definition: Red wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Band_2 Attribute_Definition: Green wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Band_3 Attribute_Definition: Blue wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_WLDR_DSM_10cm.tif Entity_Type_Definition: A cloud-optimized digital surface model gridded using the Max-Binning (DSM) method in Global Mapper from the "2025011FA_Clearview_Aug_WLDR_LPC" lidar point cloud with encoded elevation values. Pixel resolution is 10 cm. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height NAVD88 (m) using Geoid 2018 in NAD83(2011) UTM Zone 18N. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.463 Range_Domain_Maximum: 37.144 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2025011FA_Clearview_Aug_aPT_Ortho_5cm.tif Entity_Type_Definition: A cloud-optimized 5-band multispectral reflectance orthomosaic. Values can be greater than 1 due to oversaturation. Pixel resolution is 5 cm. Entity_Type_Definition_Source: producer defined Attribute: Attribute_Label: Band_1 Attribute_Definition: Blue wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000000 Range_Domain_Maximum: 1.707626 Attribute_Units_of_Measure: none Attribute: Attribute_Label: Band_2 Attribute_Definition: Green wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000000 Range_Domain_Maximum: 2.901257 Attribute_Units_of_Measure: none Attribute: Attribute_Label: Band_3 Attribute_Definition: Red wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000000 Range_Domain_Maximum: 2.078811 Attribute_Units_of_Measure: none Attribute: Attribute_Label: Band_4 Attribute_Definition: Rededge wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000000 Range_Domain_Maximum: 2.993758 Attribute_Units_of_Measure: none Attribute: Attribute_Label: Band_5 Attribute_Definition: Near infra-red wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000000 Range_Domain_Maximum: 2.949487 Attribute_Units_of_Measure: none Overview_Description: Entity_and_Attribute_Overview: The filenames are formatted as "2025011FA_Clearview_Aug_Sensor/Product_Resolution.*", where 2025011 is the USGS Field activity ID, Clearview is the location, and Aug is the data collection month; sensor includes the Wingtra MAP61 (MAP61), Altum-PT (aPT), Wingtra Lidar (WLDR), Emlid RS3 (RS3), and AeroPoint2s (GCP); products include orthomosaic (Ortho), digital surface model (DSM), and lidar point cloud (LPC). The horizontal coordinate reference system for all products is NAD83(2011)/UTM18N, the vertical coordinate reference system (VCRS) is NAVD88 using GEOID 18. Image location coordinate reference systems are specific to the sensor and can be viewed in the image locations CSV files. Entity_and_Attribute_Detail_Citation: USGS Field Activity 2025-011-FA Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: Aerial imaging and mapping of The Darby Creek Superfund Site includes a lidar point cloud, two elevation models, one natural color orthomosaics, associated imagery, ground control, and checkshots. Distribution_Liability: 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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GeoTIFF Format_Version_Number: 1.0.0 Format_Specification: Cloud optimized GeoTIFF deflate (ZIP) compressed Format_Information_Content: 2025011FA_Clearview_Aug_DSM_10cm.tif (115 MB) is a digital elevation model. 2025011FA_Clearview_Aug_MAP61_Ortho_5cm.tif (645 MB)and 2025011FA_Clearview_Aug_aPT_Ortho_5cm (3250 MB) are orthomosaics. Transfer_Size: 4010 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/69839c3db66b01367d7ecd79 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/69839c3db66b01367d7ecd79 Network_Resource_Name: https://doi.org/10.5066/P13TQ8E7 Access_Instructions: The first link in the list above is to the child page where files can be downloaded individually, the second link is to directly download all the data on the page, and third link is to the doi to the main publication. Digital_Form: Digital_Transfer_Information: Format_Name: CSV Format_Version_Number: Exported from Excel Office 365 16.01 Format_Information_Content: 2025011FA_Clearview_Aug_GCP.csv (.002 MB) and 2025011FA_Clearview_Aug_Emlid_RTK.csv (.082 MB) contain ground control data and checkshot data respectively. 2025011FA_Clearview_Aug_ImageryLocations.csv (2.143 MB) contains a list of the MAP61 images and their positions. 2025011FA_Clearview_Aug_VegSurvey.csv (0.02 MB) contains the vegetation survey data. Transfer_Size: 2.227 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/69839c3db66b01367d7ecd79 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/69839c3db66b01367d7ecd79 Network_Resource_Name: https://doi.org/10.5066/P13TQ8E7 Access_Instructions: The first link in the list above is to the child page where files can be downloaded individually, the second link is to directly download all the data on the page, and third link is to the doi to the main publication. Digital_Form: Digital_Transfer_Information: Format_Name: JPEG Format_Version_Number: 1.0.0 Format_Information_Content: The natural color (RGB) images from the MAP61 camera module. Transfer_Size: 12700 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/69839c3db66b01367d7ecd79 Network_Resource_Name: https://doi.org/10.5066/P13DBRZV Network_Resource_Name: https://doi.org/10.5066/P13TQ8E7 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/69839c3db66b01367d7ecd79 Access_Instructions: The first link in the list above is to the child page where a link to the Imagery Data System landing page can be found, the second link is to the Imagery Data System landing page where the photos can be viewed and downloaded individually, the third link is the doi redirect link to the data release landing page. The fourth link directly downloads all the data hosted on the ScienceBase page; however, due to the large total file size, this link does not currently work and is included in case it works in the future. Transfer size refers to the total size of all images if downloaded from the IDS, images are not hosted on ScienceBase. Digital_Form: Digital_Transfer_Information: Format_Name: LAZ Format_Version_Number: 1.4 Format_Information_Content: LAZ (LAserZipped) is an open file format intended for point data records. File_Decompression_Technique: Use laszip to decompress Transfer_Size: 1858 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/69839c3db66b01367d7ecd79 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/69839c3db66b01367d7ecd79 Network_Resource_Name: https://doi.org/10.5066/P13TQ8E7 Access_Instructions: The first link in the list above is to the child page where files can be downloaded individually, the second link is to directly download all the data on the page, and third link is to the doi to the main publication. Fees: None. Metadata_Reference_Information: Metadata_Date: 20260602 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amit Millo Contact_Organization: U.S. Geological Survey, Northeast Region Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2223 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: None