74945 mn_cent_ms_river_dem_m10277_metadata Data Set Published / External 49404 DEMs - partner (no harvest) Project Completed 2023-02-22 Product: Digital Elevation Model (DEM) - Class 2 (ground) LiDAR points in conjunction with the hydro breaklines were used to create a 0.5 meter hydro-flattened Raster DEM. Geographic Extent: Approximately 10,966 square miles in southeast Minnesota. MN_CentralMissRiver_1 (Work Unit 230948) - covering approximately 495 square miles MN_CentralMissRiver_2 (Work Unit 300156) - covering approximately 2621 square miles MN_CentralMissRiver_3 (Work Unit 300157) - covering approximately 2786 square miles MN_CentralMissRiver_4 (Work Unit 300158) - covering approximately 1199 square miles MN_CentralMissRiver_5 (Work Unit 300159) - covering approximately 1897 square miles MN_CentralMissRiver_6 (Work Unit 300160) - covering approximately 1968 square miles Dataset Description of Original Data: MN Central Miss River 6 B22 project called for the planning, acquisition, processing, and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 2022 Revision A. The data were developed based on a horizontal projection/datum of NAD 1983 2011 UTM Zone 15N, Meter and vertical datum of NAVD88 Geoid 18, Meter. DEM data was delivered as processed GeoTIFF files formatted to 5250 individual 1000 m x 1000 m tiles. Ground Conditions: LiDAR was collected in spring 2022, while no snow was on the ground and rivers were at or below normal levels. Ground Conditions of Original Data: Lidar was collected from May 4, 2022, through May 17, 2023 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 ground control points that were used to calibrate the lidar to known ground locations established throughout the entire project area. An additional independent accuracy checkpoints were collected throughout the entire project area and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data. 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 USGS GeoTIFF files hosted by USGS on Amazon Web Services. This project will support the 3DEP mission, the Natural Resources Conservation Service (NRCS) high-resolution elevation enterprise, and many state and local agencies. USGS Contract No. 140G0221D0013, Task Order No. 140G0222F0098, Project Name: MN Central Miss River B22. Contractor: Woolpert. Raster File Type = GeoTIFF; Bit Depth/Pixel Type = 32-bit float; Raster Cell Size = 0.5 meter; Interpolation or Resampling Technique = Triangulated Irregular Network (TIN), Linear Interpolation, Proprietary; Required Vertical Accuracy = 0.196 Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM) 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. Woolpert, USGS Data Steward 2025 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 2025 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 2025 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 2025 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 -95.16 -92.62 46.37 44.44 Range 2022-05-04 2022-05-24 Dates of collection for MN_CentralMissRiver_4 Range 2022-05-10 2022-05-23 Dates of collection for MN_CentralMissRiver_6 Range 2022-05-13 2022-05-24 Dates of collection for MN_CentralMissRiver_5 Range 2022-05-14 2022-05-27 Dates of collection for MN_CentralMissRiver_1 Range 2022-05-23 2022-06-02 Dates of collection for MN_CentralMissRiver_2 Range 2022-05-27 2023-05-17 Dates of collection for MN_CentralMissRiver_3 Yes No No No No Vertical EPSG:5703 NAVD88 height North American Vertical Datum 1988 1 Gravity-related height H metre up Projected EPSG:6344 NAD83(2011) / UTM zone 15N NAD83 (National Spatial Reference System 2011) GRS 1980 6378137 298.257222101 NAD83(2011) UTM zone 15N Transverse Mercator Latitude of natural origin 0° 0' 0" N Longitude of natural origin 93° 0' 0" W Scale factor at natural origin 0.9996 False easting 500000 metre False northing 0 metre 1 Easting E metre east 2 Northing N metre north 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=10277/details/10277 2025 Organization NOAA Office for Coastal Management Customized Download Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. Not Applicable Zip https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/ 2024 Organization U.S. Geological Survey Bulk Download Bulk download of data files in GeoTIFF format, UTM Zone 15N NAD83(2011), meters coordinates and elevations in NAVD88 (Geoid18) meters. GeoTIFF 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_CentralMissRiver_B22/MN_CentralMissRiver_1_B22/reports/lidar_mapping_report/CentralMissRiver_1_2022_Lidar_Mapping_Report.pdf Lidar Report - MN_CentralMissRiver_1 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_CentralMissRiver_B22/MN_CentralMissRiver_2_B22/reports/lidar_mapping_report/CentralMissRiver_2_2022_Lidar_Mapping_Report_WU300156.pdf Lidar Report - MN_CentralMissRiver_2 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_CentralMissRiver_B22/MN_CentralMissRiver_3_B22/reports/lidar_mapping_report/MN_CentralMissRiver_3_2022_Lidar_Mapping_Report_WU300157.pdf Lidar Report - MN_CentralMissRiver_3 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_CentralMissRiver_B22/MN_CentralMissRiver_4_B22/reports/MN_Central_Miss%20_River_4_2022_Lidar_Mapping_Report.pdf Lidar Report - MN_CentralMissRiver_4 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_CentralMissRiver_B22/MN_CentralMissRiver_5_B22/reports/MN_Central_Miss%20_River_5_2022_Lidar_Mapping_Report.pdf Lidar Report - MN_CentralMissRiver_5 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_CentralMissRiver_B22/MN_CentralMissRiver_6_B22/reports/lidar_mapping_report/MN_Central_Miss%20_River_6_2022_Lidar_Mapping_Report.pdf Lidar Report - MN_CentralMissRiver_6 Online Resource pdf Link to the lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/MN_CentralMissRiver_B22/USGS_MN_CentralMissRiver_B22_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_CentralMissRiver_B22/ USGS Additional Info Online Resource Link to the reports, breaklines, metadata, and spatial metadata. Microsoft Windows 10 ; ArcMap 10.7; ArcCatalog 10.7; TerraScan ver. 20; TerraModeler ver. 20; LP360. MN_CentralMissRiver_1 (Work Unit 230948) This data set was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 0.12 m RMSEx / RMSEy. Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 0.29 m at a 95% confidence level. MN_CentralMissRiver_2 (Work Unit 300156) This data set was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 0.15 m RMSEx / RMSEy. Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 0.36 m at a 95% confidence level. MN_CentralMissRiver_3 (Work Unit 300157) This data set was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 0.15 m RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 0.36 m at a 95% confidence. MN_CentralMissRiver_4 (Work Unit 300158) Lidar horizontal accuracy is a function of Global Navigation Satellite System (GNSS) derived positional error, flying altitude, and INS derived attitude error. The obtained RMSEr value is multiplied by a conversion factor of 1.7308 to yield the horizontal component of the National Standards for Spatial Data Accuracy (NSSDA) reporting standard where a theoretical point will fall within the obtained radius 95% of the time. Based on a flying altitude of 910 meters, an IMU error of 0.003 decimal degrees, and a GNSS positional error of 0.018 meters, this project was compiled to meet 0.15 meter horizontal accuracy at the 95% confidence level. MN_CentralMissRiver_5 (Work Unit 300159) Lidar horizontal accuracy is a function of Global Navigation Satellite System (GNSS) derived positional error, flying altitude, and INS derived attitude error. The obtained RMSEr value is multiplied by a conversion factor of 1.7308 to yield the horizontal component of the National Standards for Spatial Data Accuracy (NSSDA) reporting standard where a theoretical point will fall within the obtained radius 95% of the time. Based on a flying altitude of 1,750 meters, an IMU error of 0.003 decimal degrees, and a GNSS positional error of 0.018 meters, this project was compiled to meet 0.16 meter horizontal accuracy at the 95% confidence level. MN_CentralMissRiver_6 (Work Unit 300160) Lidar horizontal accuracy is a function of Global Navigation Satellite System (GNSS) derived positional error, flying altitude, and INS derived attitude error. The obtained RMSEr value is multiplied by a conversion factor of 1.7308 to yield the horizontal component of the National Standards for Spatial Data Accuracy (NSSDA) reporting standard where a theoretical point will fall within the obtained radius 95% of the time. Based on a flying altitude of 1,750 meters, an IMU error of 0.003 decimal degrees, and a GNSS positional error of 0.018 meters, this project was compiled to meet 0.16 meter horizontal accuracy at the 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 DEM Determined Vertical Accuracy: Tested NVA RMSEz = 3.16 cm Tested 95th percentile value for VVA is : 15.06 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. Datasets contain complete coverage of tiles. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. There are no void areas or missing data. The raw point cloud is of good quality and data pass 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 GeoTIFF files that are hosted on Amazon Web Services (AWS), into the Digital Coast Data Access Viewer (DAV). The DAV accesses the raster data as it resides on AWS. USGS GeoTIFF Files - MN_CentralMissRiver_1 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_1_B22/TIFF/ USGS GeoTIFF files for MN_CentralMissRiver_1 USGS GeoTIFF Files - MN_CentralMissRiver_2 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_2_B22/TIFF/ USGS GeoTIFF Files for MN_CentralMissRiver_2 USGS GeoTIFF Files - MN_CentralMissRiver_3 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_3_B22/TIFF/ USGS GeoTIFF Files for MN_CentralMissRiver_3 USGS GeoTIFF Files - MN_CentralMissRiver_4 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_4_B22/TIFF/ USGS GeoTIFF Files for MN_CentralMissRiver_4 USGS GeoTIFF Files - MN_CentralMissRiver_5 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_5_B22/TIFF/ USGS GeoTIFF Files for MN_CentralMissRiver_5 USGS GeoTIFF Files - MN_CentralMissRiver_6 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_6_B22/TIFF/ USGS GeoTIFF Files for MN_CentralMissRiver_6 1 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 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. 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. 2023-02-22T00:00:00 2 Hydro-Flattened Raster DEM Processing: Class 2 (Ground) LiDAR points in conjunction with the hydro-breaklines were used to create a 0.5 meter hydro-flattened raster DEM. Using automated scripting routines in proprietary software, GeoTIFF files were created for each tile. Each surface was reviewed using Global Mapper to check for any surface anomalies or incorrect elevations found within the surface. 2023-05-19T00:00:00 3 The NOAA Office for Coastal Management (OCM) created references to the USGS GeoTIFF files that were ingested into the NOAA Digital Coast Data Access Viewer (DAV). No changes were made to the data. The DAV will access the raster data as it resides on Amazon Web Services (AWS). These are the GeoTIFF files that are being accessed: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_1_B22/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_2_B22/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_3_B22/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_4_B22/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_5_B22/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/MN_CentralMissRiver_B22/MN_CentralMissRiver_6_B22/TIFF/ 2025-02-24T00:00:00 Organization Office for Coastal Management OCM https://ror.org/05v14bq57 2234 South Hobson Avenue Charleston SC 29405-2413 https://www.coast.noaa.gov/ 73145 Data Set Cross Reference gov.noaa.nmfs.inport:74945 Rebecca Mataosky 2025-02-24T20:31:28 SysAdmin InPortAdmin 2026-03-04T19:17:17 2025-02-24 OCM Partners OCMP 1002 Public No No 2024-07-23 1 Year 2025-07-23