73345 Data Set Published / External 49401 Lidar - partner (no harvest) Project Completed 2023 2024 Geographic Extent: Approximately 11,485 square miles in southwest Minnesota. MN_RiverWest_1 (Work Unit 300408) - covering approximately 4151 square miles MN_RiverWest_2 (Work Unit 300409) - covering approximately 3170 square miles MN_RiverWest_3 (Work Unit 300410) - covering approximately 4164 square miles Dataset Description of Original Data: LIDAR-derived binary (.las) files containing classified points of all returns. The classifications are: Unclassified, Ground, Low Noise, Water, Bridge Decks, High Noise and Ignored Ground. These files adhere to USGS-NGP Lidar Base Specification 2022 rev. A Quality Level 1 (QL1) standards, eight points or greater per square meter. These files are delivered in tile format (1000x1000m). This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV). For this data set, the DAV is leveraging the Entwine Point Tiles (EPT) hosted by USGS on Amazon Web Services. This task is for providing a spring 2023 leaf-off and snow-free lidar survey over an area of approximately 11,485 square miles. This project will support the 3DEP mission, the Natural Resources Conservation Service (NRCS) high-resolution elevation enterprise, as well as many state and local agencies. USGS Task Order 140G0223F0145-MN_RiverWest_B23 Synthetic Points: Optech's Galaxy T2000 raw lidar post-processing software LMS uses a method to fill small voids with synthetic points when the PulseTRAK algorithm drops a point recording. This can happen between the transition of PIA (pulse-in-air) zones. Time periods have been converted from UTC to Central Standard Time for the metadata. Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION Theme ISO 19115 Topic Category elevation Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MINNESOTA Spatial Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > LAND SURFACE Instrument Global Change Master Directory (GCMD) Instrument Keywords LIDAR > Light Detection and Ranging Platform Global Change Master Directory (GCMD) Platform Keywords Airplane > Airplane Office for Coastal Management Charleston SC Data Set Elevation None Planned Model (digital) Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. Merrick-Surdex Joint Venture, USGS, NRCS Data Steward 2024 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2024 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2024 Organization U.S. Geological Survey 12201 Sunrise Valley Drive Reston VA 20191 USA https://usgs.gov USGS Home Home page for USGS Online Resource Metadata Contact 2024 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2024 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Ground Condition -96.5 -94.45 44.93 44.19 MN_RiverWest_1 (WU 300408) -96.16 -94.74 45.44 44.85 MN_RiverWest_2 (WU 300409) -96.87 -95.11 45.79 45.4 MN_RiverWest_3 (WU 300410) Range 2023-05-04 2023-06-20 Dates of collection for MN_RiverWest_1 (WU 300408) Range 2023-05-15 2023-06-20 Dates of collection for MN_RiverWest_2 (WU 300409) Range 2023-05-25 2023-06-20 Dates of collection for MN_RiverWest_3 (WU 300410) No Yes No No No Projected EPSG:3857 WGS 84 / Pseudo-Mercator World Geodetic System 1984 WGS 84 6378137 298.257223563 WGS 84 Popular Visualisation Pseudo-Mercator Popular Visualisation Pseudo Mercator Latitude of natural origin 0° 0' 0" N Longitude of natural origin 0° 0' 0" E False easting 0 metre False northing 0 metre 1 Easting X metre east 2 Northing Y metre north Vertical EPSG:5703 NAVD88 height North American Vertical Datum 1988 1 Gravity-related height H metre up Custom Unclassified Data is available online for bulk and custom downloads. None Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10171/details/10171 2024 Organization NOAA Office for Coastal Management Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base. Change to an orthometric vertical datum is one of the many options. Not Applicable Zip https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MN_RiverWest_B23/ 2024 Organization U.S. Geological Survey Bulk Download Bulk download of data files in LAZ format, UTM Zone 15 NAD83 (2011), meters coordinates and NAVD88 (Geoid18) elevations in meters LAS/LAZ - LASer LAZ https://coast.noaa.gov/dataviewer/ NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) Online Resource HTML The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_RiverWest_B23/MN_RiverWest_1_B23/reports/140G0223F0145-MN_RiverWest_B23_WU_ID300408_Lidar_Mapping_Report.pdf Lidar Report - MN_RiverWest_1 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_RiverWest_B23/MN_RiverWest_2_B23/reports/Lidar_Report/140G0223F0145-MN_RiverWest_B23_WU_ID300409_Lidar_Mapping_Report.pdf Lidar Report - MN_RiverWest_2 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_RiverWest_B23/MN_RiverWest_3_B23/reports/Lidar_Report/140G0223F0145-MN_RiverWest_B23_WU_ID300410_Lidar_Mapping_Report.pdf Lidar Report - MN_RiverWest_3 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_RiverWest_B23/USGS_MN_RiverWest_B23_Project_Report.pdf USGS Project Report Online Resource pdf Link to the USGS Project Report that provides information about the project, vertical accuracy results, and the point classes and sensors used. https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/MN_RiverWest_B23/ USGS Additional Info Online Resource Link to the reports, breaklines, metadata, and spatial metadata. https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_1_B23/ept.json USGS Entwine Point Tile (EPT) - MN_RiverWest_1 Online Resource json Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_2_B23/ept.json USGS Entwine Point Tile (EPT) - MN_RiverWest_2 Online Resource json Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_3_B23/ept.json USGS Entwine Point Tile (EPT) - MN_RiverWest_3 Online Resource json Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. https://usgs.entwine.io/data/view.html?r=[%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_1_B23/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_2_B23/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_3_B23/ept.json%22] USGS 3D View Online Resource Link to view the point cloud, using the Entwine Point Tile (EPT) format, in the 3D Potree viewer. Microsoft Windows 10 ; ArcMap 10.7; ArcCatalog 10.7; TerraScan ver. 20; TerraModeler ver. 20; LP360. The lidar data set 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 cm at a 95% confidence level. This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class. USGS Determined Vertical Accuracy: Tested NVA RMSEz = 3.97 cm Tested 95th percentile value for VVA = 17.65 cm For more information see the USGS project report and the lidar reports. The links to these reports are provided in the URL section of this metadata record. 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. The raw point cloud is of good quality and data passes Non-Vegetated Vertical Accuracy specifications. Data covers the entire area specified for this project. Yes Unknown Yes NCEI-NC Data is backed up to cloud storage. The NOAA Office for Coastal Management (OCM) ingested references to the USGS Entwine Point Tiles (EPT) hosted on Amazon Web Services (AWS) into the Digital Coast Data Access Viewer (DAV). The DAV accesses the point cloud as it resides on AWS under the usgs-lidar-public-container. USGS AWS Entwine Point Tile (EPT) - MN_RiverWest_1 Organization USGS Publisher https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_1_B23/ept.json Entwine Point Tile for MN_RiverWest_1 USGS AWS Entwine Point Tile (EPT) - MN_RiverWest_2 Organization USGS Publisher https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_2_B23/ept.json Entwine Point Tile for MN_RiverWest_2 USGS AWS Entwine Point Tile (EPT) - MN_RiverWest_3 Organization USGS Publisher https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_3_B23/ept.json Entwine Point Tile for MN_RiverWest_3 1 Lidar data was collected using Optech Galaxy T2000 sensor. The raw data was verified in MARS software for complete coverage of the project area, and boresighted to align the flightlines. Raw data files were parsed into manageable client-specific tiles. These tiles were then processed through automated filtering that separates the data into different classification groups: unclassified points, ground points, low noise, water, bridge decks, high noise and ignore ground. The data was next taken into MARS to reclassify the erroneous points that may remain in the lidar point cloud after auto filter. Eight points per square meter (QL1). 2023-11-28T00:00:00 2 MN_RiverWest_1 LiDAR swath data was measured to have an aggregate of 0.198 meter nominal pulse spacing and 25.525 pulses per meter. The method used was counting first return points within the each swath then dividing by the area of the extent of the corresponding swath to get density. NPS was mathematically derived from this density number. This was performed on each swath then averaged to generate the two numbers above. This USGS method does not consider swath sidelap in these calculations. MN_RiverWest_2 LiDAR swath data was measured to have an aggregate of 0.183 meter nominal pulse spacing and 30.006 pulses per meter. The method used was counting first return points within the each swath then dividing by the area of the extent of the corresponding swath to get density. NPS was mathematically derived from this density number. This was performed on each swath then averaged to generate the two numbers above. This USGS method does not consider swath sidelap in these calculations. MN_RiverWest_3 LiDAR swath data was measured to have an aggregate of 0.205 meter nominal pulse spacing and 23.796 pulses per meter. The method used was counting first return points within the each swath then dividing by the area of the extent of the corresponding swath to get density. NPS was mathematically derived from this density number. This was performed on each swath then averaged to generate the two numbers above. This USGS method does not consider swath sidelap in these calculations. 2023-11-28T00:00:00 3 Original point clouds in LAS/LAZ format were restructured as Entwine Point Tiles and stored on Amazon Web Services. The data were re-projected horizontally to WGS84 web mercator (EPSG 3857) and and the vertical units of meters (NAVD88 GEOID18) were retained. Organization U.S. Geological Survey 12201 Sunrise Valley Drive Reston VA 20191 USA https://usgs.gov USGS Home Home page for USGS Online Resource 4 The NOAA Office for Coastal Management (OCM) created references to the Entwine Point Tiles (EPT) that were ingested into the NOAA Digital Coast Data Access Viewer (DAV). No changes were made to the data. The DAV will access the point cloud as it resides on Amazon Web Services (AWS) under the usgs-lidar-public container. These are the AWS URLs being accessed: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_1_B23/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_1_B23/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/MN_RiverWest_1_B23/ept.json 2024-09-04T00:00:00 Organization Office for Coastal Management OCM https://ror.org/05v14bq57 2234 South Hobson Avenue Charleston SC 29405-2413 https://www.coast.noaa.gov/ gov.noaa.nmfs.inport:73345 Rebecca Mataosky 2024-09-03T13:35:42 SysAdmin InPortAdmin 2026-03-04T19:17:17 2024-09-05 OCM Partners OCMP 1002 Public No No 2024-07-23 1 Year 2025-07-23