| 2025 NOAA OCS Topobathy Lidar: Thunder Bay NMS (H14138), MI | referenceSystemInfo|
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| (MI_Metadata) fileIdentifier: gov.noaa.nmfs.inport:80422 language: LanguageCode: eng characterSet: (MD_CharacterSetCode) UTF8 hierarchyLevel: (MD_ScopeCode) dataset hierarchyLevelName: Elevation contact: (CI_ResponsibleParty) organisationName: Office for Coastal Management contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (missing) address: (CI_Address) role: (CI_RoleCode) resourceProvider contact: (CI_ResponsibleParty) organisationName: NOAA Office for Coastal Management contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (843) 740-1202 address: (CI_Address) deliveryPoint: 2234 South Hobson Ave city: Charleston administrativeArea: SC postalCode: 29405-2413 country: (missing) electronicMailAddress: coastal.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov protocol: WWW:LINK-1.0-http--link name: NOAA Office for Coastal Management Website description: NOAA Office for Coastal Management Home Page function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact dateStamp: DateTime: 2026-09-14T20:37:23 metadataStandardName: ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data metadataStandardVersion: ISO 19115-2:2009(E) return to top referenceSystemInfo: (MD_ReferenceSystem) referenceSystemIdentifier: (RS_Identifier) authority: (CI_Citation) title: NAD83(2011) / UTM zone 16N date: (CI_Date) date: 2008-11-12 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) organisationName: European Petroleum Survey Group contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://apps.epsg.org/api/v1/CoordRefSystem/6345/export/?format=gml role: (missing) code: urn:ogc:def:crs:EPSG:6345 version: 6.18.3 return to top referenceSystemInfo: (MD_ReferenceSystem) referenceSystemIdentifier: (RS_Identifier) authority: (CI_Citation) title: NAD83(2011) / UTM zone 16N date: (CI_Date) date: 2008-11-12 dateType: (CI_DateTypeCode) publication citedResponsibleParty: (CI_ResponsibleParty) organisationName: European Petroleum Survey Group contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://apps.epsg.org/api/v1/CoordRefSystem/6345/export/?format=gml role: (missing) code: urn:ogc:def:crs:EPSG:6345 version: 6.18.3 return to top spatialRepresentationInfo: return to top identificationInfo: (MD_DataIdentification) citation: (CI_Citation) title: 2025 NOAA OCS Topobathy Lidar: Thunder Bay NMS (H14138), MI alternateTitle: mi2025_thndr_bay_h14138_m15623 date: (CI_Date) date: 2025 dateType: (CI_DateTypeCode) creation date: (CI_Date) date: 2026 dateType: (CI_DateTypeCode) publication identifier: (MD_Identifier) authority: (CI_Citation) title: NOAA/NMFS/EDM date: (inapplicable) code: Anchor: InPort Catalog ID 80422 citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://www.fisheries.noaa.gov/inport/item/80422 protocol: WWW:LINK-1.0-http--link name: Full Metadata Record description: View the complete metadata record on InPort for more information about this dataset. function: (CI_OnLineFunctionCode) information role: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov/ protocol: WWW:LINK-1.0-http--link name: NOAA's Office for Coastal Management (OCM) website description: Information on the NOAA Office for Coastal Management (OCM) function: (CI_OnLineFunctionCode) download role: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/15623/supplemental/H14138_Survey_Metadata.pdf protocol: WWW:LINK-1.0-http--link name: Lidar Report description: Link to the NV5 lidar report. function: (CI_OnLineFunctionCode) download role: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov/dataviewer/ protocol: WWW:LINK-1.0-http--link name: NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) description: 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. function: (CI_OnLineFunctionCode) download role: (inapplicable) presentationForm: (unknown) abstract: The NOAA Thunder Bay National Marine Sanctuary (NMS) Topobathymetric Project Lidar data were collected by NV5 using Leica Chiroptera-5 and HawkEye-5 systems. The NOAA Thunder Bay H14138 Topobathymetric Lidar survey acquisition was flown between 20250718 and 20250726 in five missions. The H14138 dataset includes topobathymetric lidar data in a LAS format 1.4, point data record format 6, with the following classifications in accordance with project specifications and the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards: 1- Unclassified 1+Withheld- Edge Clip 1+Overlap+Withheld- Unrefracted Returns from Green Laser 2- Topographic Ground 7+Withheld- Low Noise 18+Withheld- High Noise 40- Bathymetric Bottom (Submerged Topography) 41- Water Surface 42+Synthetic- Synthetic Derived Water Surface 43- Submerged Object 45- Water Column 47+Withheld- Submerged (Bathymetric) Noise. The channel bits are mapped as follows: 0 - Chiroptera shallow green and Chiroptera shallow green 4x 1 - Chiroptera and HawkEye synthetic water surface 2 - HawkEye deep green and HawkEye deep green 4X 3 - Chiroptera NIR The user byte is mapped as follows: 10 - Chiroptera shallow green 11 - Chiroptera shallow green 4x 12 - Chiroptera shallow green synthetic water surface 20 - HawkEye deep green 21 - HawkEye deep green 4X 22 - HawkEye deep green synthetic 30 - Chiroptera NIR. This dataset also includes lidar intensity values, number of returns, return number, time, and scan angle. The NOAA Thunder Bay H14138 Topobathymetric lidar point cloud were provided in LAS file format 1.4, point data record format 6, compiled into 803 - 500 meter x 500 meter tiles and clipped to the 100 meter buffered project boundary covering an area of 35,166 acres. The provided point cloud was referenced to the NAD83(2011) epoch:2010 horizontal geodetic datum, with International Great Lakes Datum 85 (IGLD85) Low Water Datum Heights, and was projected in UTM Zone 17 North. The NOAA Office of Coast Survey (OCS) provided this data to the NOAA Office for Coastal Management (OCM) for the purpose of making the data publicly available for bulk and custom downloads from the NOAA Digital Coast Data Access Viewer. This data set contains point cloud data(' in LAZ (compressed LAS) format', ''). The data may have been reprojected or otherwise modified from the original data in an automated process. Disregard projection information in this abstract and refer to the spatial reference section. purpose: This lidar survey was required by National Oceanic and Atmospheric Administration (NOAA) Office of Coast Survey (OCS), Hydrographic Survey Division (HSD) to support collaboration with NOAA Sanctuaries and Great Lakes Environmental Research Lab (GLERL) to modernize hydrographic surveys in the Thunder Bay National Marine Sanctuary in order to support habitat analysis, environmental modeling, and update Coastal Survey's nautical charts to promote maritime safety in the multi-industry trafficked corridor. credit: We request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these data in a report, publication, or presentation., Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Hydrographic Surveys Division (HSD) Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Hydrographic Surveys Division (HSD) The custom download may be cited as National Oceanic and Atmospheric Administration (NOAA) Digital Coast Data Access Viewer. Charleston, SC: NOAA Office for Coastal Management. Accessed 2026-09-15 at https://coast.noaa.gov/dataviewer. status: (MD_ProgressCode) completed pointOfContact: (CI_ResponsibleParty) organisationName: NOAA Office for Coastal Management contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (843) 740-1202 address: (CI_Address) deliveryPoint: 2234 South Hobson Ave city: Charleston administrativeArea: SC postalCode: 29405-2413 country: (missing) electronicMailAddress: coastal.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov protocol: WWW:LINK-1.0-http--link name: NOAA Office for Coastal Management Website description: NOAA Office for Coastal Management Home Page function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact pointOfContact: (CI_ResponsibleParty) organisationName: NOAA Office for Coastal Management contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (843) 740-1202 address: (CI_Address) deliveryPoint: 2234 South Hobson Ave city: Charleston administrativeArea: SC postalCode: 29405-2413 country: (missing) electronicMailAddress: coastal.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov protocol: WWW:LINK-1.0-http--link name: NOAA Office for Coastal Management Website description: NOAA Office for Coastal Management Home Page function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) custodian resourceMaintenance: (MD_MaintenanceInformation) maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) notPlanned descriptiveKeywords: (MD_Keywords) keyword: EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY > COASTAL BATHYMETRY keyword: EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION type: (MD_KeywordTypeCode) theme thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Science Keywords date: (missing) edition: 23.3 descriptiveKeywords: (MD_Keywords) keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MICHIGAN keyword: VERTICAL LOCATION > LAND SURFACE keyword: VERTICAL LOCATION > SEA FLOOR type: (MD_KeywordTypeCode) place thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Location Keywords date: (missing) edition: 23.3 descriptiveKeywords: (MD_Keywords) keyword: LIDAR > Light Detection and Ranging type: (MD_KeywordTypeCode) instrument thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Instrument Keywords date: (missing) edition: 23.3 descriptiveKeywords: (MD_Keywords) keyword: Airplane > Airplane type: (MD_KeywordTypeCode) platform thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Platform Keywords date: (missing) edition: 23.3 descriptiveKeywords: (MD_Keywords) keyword: DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce type: (MD_KeywordTypeCode) dataCentre thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Data Center Keywords date: (CI_Date) date: 2017-04-24 dateType: (CI_DateTypeCode) publication edition: 8.5 citedResponsibleParty: GCMD Landing Page descriptiveKeywords: (MD_Keywords) keyword: Lidar type: (MD_KeywordTypeCode) project thesaurusName: (CI_Citation) title: InPort date: (inapplicable) resourceConstraints: (MD_LegalConstraints) useConstraints: (MD_RestrictionCode) otherRestrictions otherConstraints: This data set was compiled dynamically. It will be removed 10 days after 2026-09-15 from the NOAA system. Cite As: Office for Coastal Management, [Date of Access]: 2025 NOAA OCS Topobathy Lidar: Thunder Bay NMS (H14138), MI [Data Date Range], https://www.fisheries.noaa.gov/inport/item/80422. resourceConstraints: (MD_Constraints) useLimitation: NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. resourceConstraints: (MD_LegalConstraints) useConstraints: (MD_RestrictionCode) license otherConstraints: Anchor: Universal (CC0 1.0) Public Domain Dedication To the extent possible under law, the U.S. Government has waived all copyright and related or neighboring rights to this dataset. resourceConstraints: (MD_LegalConstraints) accessConstraints: (MD_RestrictionCode) otherRestrictions otherConstraints: This data set was compiled dynamically. It will be removed 10 days after 2026-09-15 from the NOAA system. Access Constraints: None resourceConstraints: (MD_LegalConstraints) useConstraints: (MD_RestrictionCode) otherRestrictions otherConstraints: This data set was compiled dynamically. It will be removed 10 days after 2026-09-15 from the NOAA system. Use Constraints: 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. resourceConstraints: (MD_LegalConstraints) useLimitation: (MD_RestrictionCode) otherRestrictions otherConstraints: This data set was compiled dynamically. It will be removed 10 days after 2026-09-15 from the NOAA system. Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Ocean Service, the Office of Coast Survey, the Office for Coastal Management or its partners. resourceConstraints: (MD_SecurityConstraints) classification: (MD_ClassificationCode) unclassified classificationSystem: (missing) handlingDescription: (missing) aggregationInfo: (MD_AggregateInformation) aggregateDataSetName: (CI_Citation) title: 2025 NOAA OCS Topobathy Lidar DEM: Thunder Bay NMS (H14138), MI date: (unknown) identifier: (MD_Identifier) authority: (CI_Citation) title: NOAA/NMFS/EDM date: (inapplicable) code: 80417 associationType: (DS_AssociationTypeCode) crossReference spatialRepresentationType: (MD_SpatialRepresentationTypeCode) vector language: eng; US topicCategory: (MD_TopicCategoryCode) elevation extent: (EX_Extent) geographicElement: (EX_GeographicBoundingBox) westBoundLongitude: -84.389591 eastBoundLongitude: -83.562155 southBoundLatitude: 45.343466 northBoundLatitude: 45.799254 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: | Currentness: Ground Condition beginPosition: 2025-07-18 endPosition: 2025-07-26 supplementalInformation: The NOAA Thunder Bay H14138 Topobathymetric Lidar dataset includes all lidar returns within the project's 100 meter buffered boundary. Automated classification algorithms were used to determine topographic ground and bathymetric bottom point classification followed by manual editing to ensure final proper classification per contractual specifications. Class 2 topographic ground, class 40 bathymetric bottom, and class 43 submerged object were used to create the final bare earth elevation DEMs. A Bathymetric void shapefile was created to restrict interpolation in the final bare earth elevation model in areas of bathymetric voids greater than 9 square meters. The methodology used for the Thunder Bay H14138 product deliverables were further detailed in the NOAA Thunder Bay H14138 Topobathymetric final report. return to top distributionInfo: (MD_Distribution) distributionFormat: (MD_Format) name: (inapplicable) version: (missing) fileDecompressionTechnique: Zip distributionFormat: (MD_Format) name: LAS/LAZ - LASer version: (missing) distributor: (MD_Distributor) distributorContact: (CI_ResponsibleParty) organisationName: NOAA Office for Coastal Management contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (843) 740-1202 address: (CI_Address) deliveryPoint: 2234 South Hobson Ave city: Charleston administrativeArea: SC postalCode: 29405-2413 country: (missing) electronicMailAddress: coastal.info@noaa.gov onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov protocol: WWW:LINK-1.0-http--link name: NOAA Office for Coastal Management Website description: NOAA Office for Coastal Management Home Page function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) distributor transferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=15623/details/15623 protocol: WWW:LINK-1.0-http--link name: Customized Download description: 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. function: (CI_OnLineFunctionCode) download transferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/15623/index.html protocol: WWW:LINK-1.0-http--link name: Bulk Download description: Bulk download of data files in UTM Zone 17N NAD83 (2011) meters coordinates and IGLD85 elevations in meters. function: (CI_OnLineFunctionCode) download return to top dataQualityInfo: (DQ_DataQuality) scope: (DQ_Scope) level: (MD_ScopeCode) dataset report: (DQ_AbsoluteExternalPositionalAccuracy) nameOfMeasure: Horizontal Positional Accuracy evaluationMethodDescription: Horizontal Accuracy Check using the IMU and GNSS Positional Error (NOAA RSD/2014 ASPRS Standard Reporting Practice/FGDC NSSDA): IMU and GNSS positional error were computed separately using the Chiroptera-5 trajectories and the HawkEye-5 trajectories for H14138, but were all found to be the same. Based on the following parameters, a flying altitude of 400 meters, a maximum combined roll/pitch IMU error of 0.002 decimal degrees and a maximum GNSS positional error of 0.005 meters, this project was produced to meet a 0.025 m RMSEr Horizontal Positional Accuracy Class and 0.044 m ACCr (the accuracy value according to NSSDA at 95% confidence). result: (missing) report: (DQ_AbsoluteExternalPositionalAccuracy) nameOfMeasure: Vertical Positional Accuracy evaluationMethodDescription: Lidar Non-Vegetated Vertical Accuracy Analysis (NOAA RSD/2014 ASPRS Standard Reporting Practice): For H14138, 20 ground checkpoints were withheld from the calibration and post processing of the lidar point cloud, with a resulting non-vegetated vertical accuracy (NVA) of 0.046 meters as compared to the classified LAS with 95% confidence or 2.3 cm RMSE. Lidar Bathymetric Vertical Accuracies (NOAA RSD/2014 ASPRS Standard Reporting Practice): Bathymetric (submerged) checkpoints were collected and compared against the classified LAS to assess the submerged surface vertical accuracy. The Bathymetric Vertical Accuracy for H14138 was found to be RMSE = 0.068 m with 71 submerged points. result: (missing) report: (DQ_CompletenessCommission) nameOfMeasure: Completeness Report evaluationMethodDescription: Data fully covers the 803 tiles (500 m x 500 m tiles). result: (missing) report: (DQ_ConceptualConsistency) nameOfMeasure: Conceptual Consistency evaluationMethodDescription: Not applicable result: (missing) lineage: (LI_Lineage) statement: The NOAA Office for Coastal Management (OCM) received the LAZ files from the NOAA Office of Coast Survey (OCS). processStep: (LI_ProcessStep) description: Lidar data for the NOAA Thunder Bay H14138 Topobathymetric survey was acquired by NV5 using Leica Chiroptera-5 and HawkEye-5 topobathymetric lidar systems. All derived DEM data is referenced to: Horizontal Datum-NAD83(2011) epoch: 2010.00 Projection-UTM Zone 17N Horizontal Units-meters Vertical Datum-IGLD85 LWD Vertical Units-meters NOAA provided NV5 with a project boundary for the NOAA Thunder Bay Topobathymetric project. The collected lidar data were processed in the field by NV5 to a level that allowed for immediate QA\QC measures to determine proper sensor function and assess the submerged topography coverage. NV5 reviewed all acquired flight lines to ensure complete survey area coverage and positional accuracy of the laser points. NV5 resolved kinematic corrections for the aircraft Global Navigation Satellite System (GNSS) data using static Global Positioning System (GPS) data from Continuously Operating Reference Stations (CORS) utilizing the Online Positioning User Service (OPUS) for precise positioning. Using raster-based QC methods, the output data was reviewed to ensure the refraction correction operated properly. After the resulting data was reviewed to ensure accurate positioning, custom classification algorithms were applied followed by manual classification editing using TerraSolid software packages and NV5’s proprietary LAS Monkey software to meet the contract specified ASPRS classification scheme listed below. Absolute vertical accuracy was assessed using ground survey data compared against the final H14138 dataset. The final lidar point cloud was provided in .LAS 1.4 file format, point record format 6 and delineated into 500 meter x 500 meter tiles and clipped to the 100 meter buffered project boundary. NV5's proprietary software LasMonkey was used to update LAS header information, including projection and coordinate reference system information. The final lidar data are in LAS format 1.4 and point data record format 6. The derived topobathymetric bare earth digital elevation model (DEM) raster mosaics were created from class 2 topographic ground, class 40 bathymetric bottom, and class 43 submerged object classified returns. The final bare earth rasters were provided in Cloud Optimized GeoTIFF format with 1 meter pixel resolution, IGLD85 Low Water Datum elevations, and were delineated into 52 - 5000 meter x 5000 meter DEM tiles clipped to the 100 meter buffered project boundary. A Bathymetric void shapefile was created to restrict interpolation in the final bare earth elevation model in areas of bathymetric voids greater than 9 square meters. The methodology used for the Thunder Bay H14138 product deliverables were further detailed in the NOAA Thunder Bay H14138 Topobathymetric final report. The final classification scheme is as follows: 1- Unclassified 1+Withheld- Edge Clip 1+Overlap+Withheld- Unrefracted Returns from Green Laser 2- Topographic Ground 7+Withheld- Low Noise 18+Withheld- High Noise 40- Bathymetric Bottom (Submerged Topography) 41- Water Surface 42+Synthetic- Synthetic Derived Water Surface 43- Submerged Object 45- Water Column 47+Withheld- Submerged (Bathymetric) Noise dateTime: DateTime: 2026-02-24T00:00:00 processStep: (LI_ProcessStep) description: The NOAA Office for Coastal Management (OCM) received 803 LAZ files from the NOAA Office of Coast Survey. The files were in UTM Zone 17N NAD83 (2011) meters coordinates and the elevations were in Low Water Datum (LWD) IGLD85 meters. The NOAA Great Lakes Low Water Datum (LWD) for Lake Huron is officially set at 176.0 meters IGLD85. In order to convert the data to IGLD85, 176.0 meters was added to each elevation. This was done with pdal. The data classes were: 1 - Unclassified, 2 - Ground, 7 - Low Noise, 18 - High Noise, 40 - Bathy Bottom, 41 - Water Surface, 42 - Synthetic Water Surface, 43 - Submerged Feature, 45 - Water Column, 47 - Submerged Noise. OCM processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available in the DAV are: 1, 2, 7, 18, 40, 41, 42, 43, 45, 47. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. An internal OCM script was run to check the number of points by classification and by flight ID and the gps and intensity ranges. 2. Pdal was used to convert the elevations from a vertical datum of Low Water Datum (LWD) IGLD85 to IGLD85 by adding 176 m (for Lake Huron) to each elevation value. 3. Internal OCM scripts were run on the laz files to convert from UTM Zone 17N (NAD83 2011), meters coordinates to geographic coordinates. dateTime: DateTime: 2026-09-14T00:00:00 processor: (CI_ResponsibleParty) organisationName: NOAA Office for Coastal Management contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (843) 740-1202 address: (CI_Address) electronicMailAddress: coastal.info@noaa.gov role: (CI_RoleCode) processor source: (LI_Source) sourceCitation: (CI_Citation) title: NOAA Office of Coast Survey LAZ Files date: (missing) citedResponsibleParty: (CI_ResponsibleParty) organisationName: NOAA OCS contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://nauticalcharts.noaa.gov/ protocol: WWW:LINK-1.0-http--link name: NOAA Office of Coast Survey (OCS) description: Source Citation URL function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) originator processStep: (LI_ProcessStep) description: The dataset has been mosaiced, reprojected, and clipped as needed from the original input files using PDAL and GDAL commands. dateTime: DateTime: 2026-09-15 processor: (CI_ResponsibleParty) individualName: NOAA Office for Coastal Management contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: coastal.info@noaa.gov role: (CI_RoleCode) processor | |