2011 MN DNR Lidar: Arrowhead, MN
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:68645 | Updated: August 23, 2024 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2011 MN DNR Lidar: Arrowhead, MN, https://www.fisheries.noaa.gov/inport/item/68645.
Full Citation Examples
The project vendor, Woolpert, Inc., acquired highly accurate Light Detection and Ranging (LiDAR) elevation data for the Arrowhead Region in Northeast Minnesota in Spring 2011. The data cover Carlton, Cook, Lake and St. Louis counties, part of Itasca County, and Voyageurs National Park in Koochiching County. LiDAR data are in the UTM Zone 15 coordinate system, NAD83 NAVD88 Geoid09 meters. The tiling scheme is 16th USGS 1:24,000 quadrangle tiles.
The vendor delivered the data to the Minnesota Department of Natural Resources (DNR) in several formats:
1) One-meter digital elevation model
2) Edge-of-water breaklines
3) Classified LAS formatted point cloud data
DNR staff created two additional products: two-foot contours and building outlines.
The original metadata record was created at the Minnesota Geospatial Information Office by combining information supplied by Woolpert and DNR.
This metadata 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.
Distribution Information
-
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.
-
LAS/LAZ - LASer
Bulk download of the data files in LAZ format, based on a horizontal datum/projection of UTM Zone 15, NAD83, meters and a vertical datum of NAVD88 (GEOID09) and units in meters. This url links to the USGS copy of the files, from which the Entwine Point Tile files originated. These have not been reviewed by OCM and the link is provided here for convenience.
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.
Controlled Theme Keywords
COASTAL ELEVATION, elevation, TERRAIN ELEVATION
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-93.23431° W,
-89.562° E,
48.664343° N,
46.34806° S
2011-05-03 - 2011-06-02
Item Identification
| Title: | 2011 MN DNR Lidar: Arrowhead, MN |
|---|---|
| Short Name: | mn2011_arrowhead_m9675_metadata |
| Status: | Completed |
| Creation Date: | 2011 |
| Publication Date: | 2012-06-11 |
| Abstract: |
The project vendor, Woolpert, Inc., acquired highly accurate Light Detection and Ranging (LiDAR) elevation data for the Arrowhead Region in Northeast Minnesota in Spring 2011. The data cover Carlton, Cook, Lake and St. Louis counties, part of Itasca County, and Voyageurs National Park in Koochiching County. LiDAR data are in the UTM Zone 15 coordinate system, NAD83 NAVD88 Geoid09 meters. The tiling scheme is 16th USGS 1:24,000 quadrangle tiles. The vendor delivered the data to the Minnesota Department of Natural Resources (DNR) in several formats: 1) One-meter digital elevation model 2) Edge-of-water breaklines 3) Classified LAS formatted point cloud data DNR staff created two additional products: two-foot contours and building outlines. The original metadata record was created at the Minnesota Geospatial Information Office by combining information supplied by Woolpert and DNR. This metadata 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. |
| Purpose: |
The Minnesota Elevation Mapping Project was initiated to support the development of high accuracy land surface information for the purposes of improving water quality, flood emergency preparedness and response, floodplain mapping, transportation planning and design, recreational planning and design, urban planning and to provide more efficient and effective project planning and execution. This project was funded by the Clean Water Fund of the Clean Water, Land and Legacy Amendment with contributions from the Natural Resources Conservation Service, The National Parks Service and Lake County. For more about the Project, see: http://www.mngeo.state.mn.us/committee/elevation/mn_elev_mapping.html |
| Supplemental Information: |
Arrowhead Region in northeast Minnesota |
Keywords
Theme Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
|
| Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
|
| ISO 19115 Topic Category |
elevation
|
Spatial Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
| Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MINNESOTA
|
| Global Change Master Directory (GCMD) Location Keywords |
VERTICAL LOCATION > LAND SURFACE
|
Instrument Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Instrument Keywords |
LIDAR > Light Detection and Ranging
|
Platform Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Platform Keywords |
Airplane > Airplane
|
Physical Location
| Organization: | Office for Coastal Management |
|---|---|
| City: | Charleston |
| State/Province: | SC |
Data Set Information
| Data Set Scope Code: | Data Set |
|---|---|
| Data Set Type: | Elevation |
| Maintenance Frequency: | As Needed |
| Data Presentation Form: | Model (digital) |
| Distribution Liability: |
1. Due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by the Client or any other consultant or contractor. Any reuse will be at the Client's sole risk unless Woolpert, Inc., for compensation to be agreed upon, reviews and adapts such deliverables. 2. Minnesota Department of Natural Resources General Geographic Data License Agreement 1) The Minnesota Department of Natural Resources (MNDNR) grants to you a non-exclusive, non-sublicensable, license to use these digital data. This License agreement applies to all digital data acquired from DNR staff, FTP sites, or other internet-based delivery systems. In the event that another license agreement issued by DNR staff is explicitly associated with a particular data set, the terms of the other license agreement prevail, and the terms expressed in this more general license agreement are nullified. 2) The MNDNR makes no representations about the suitability of these data for any purpose. The data are provided 'as is' without express or implied warranties, including warranties of merchantability and fitness for a particular purpose or non-infringement. 3) MNDNR is not obligated to provide updates to these data in the event that newer versions become available. MNDNR provides documentation when available through established distribution mechanisms. 4) The user relieves the MNDNR and its respective officers, agents, and employees of any liability for any and all damages resulting from use of mis-use of these data including, but not limited to: a. Incidental, consequential, special or indirect damages of any sort, whether arising in tort, contract or otherwise, even if MNDNR has been informed of the possibility of such damages, or b. For any claim by any other party. Furthermore, in States that do not allow the exclusion of limitation of incidental or consequential damages, you may not use these data. 5) When these data are used in the development of digital or analog (hardcopy) products, MNDNR must be acknowledged as having contributed data to the development of the product. 6) Although the use of these data are not restricted, they may not be sold commercially or privately without the written permission of MNDNR. 3. MnGeo's data disclaimer is online: http://www.mngeo.state.mn.us/chouse/disclaimer.html Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. |
| Data Set Credit: | Minnesota Department of Natural Resources |
Support Roles
Data Steward
| Date Effective From: | 2022 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
| Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Distributor
| Date Effective From: | 2022 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
| Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Distributor
| Date Effective From: | 2011 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | U.S. Geological Survey |
| Address: |
12201 Sunrise Valley Drive Reston, VA 20191 USA |
| URL: | USGS Home |
Metadata Contact
| Date Effective From: | 2022 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
| Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Point of Contact
| Date Effective From: | 2022 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
| Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Extents
| Currentness Reference: | Ground Condition |
|---|
Extent Group 1
Extent Group 1 / Geographic Area 1
| W° Bound: | -93.23431 | |
|---|---|---|
| E° Bound: | -89.562 | |
| N° Bound: | 48.664343 | |
| S° Bound: | 46.34806 |
Extent Group 1 / Time Frame 1
| Time Frame Type: | Range |
|---|---|
| Start: | 2011-05-03 |
| End: | 2011-06-02 |
Spatial Information
Spatial Representation
Representations Used
| Vector: | Yes |
|---|
Reference Systems
Reference System 1
Coordinate Reference System |
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Reference System 2
Coordinate Reference System |
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Access Information
| Security Class: | Unclassified |
|---|---|
| Data Access Procedure: |
Data is available online for bulk and custom downloads. |
| Data Access Constraints: |
None |
| Data 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. |
Distribution Information
Distribution 1
| Start Date: | 2022-12-02 |
|---|---|
| End Date: | Present |
| Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9675/details/9675 |
| Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2022 - Present) |
| File 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. Change to an orthometric vertical datum is one of the many options. |
| File Type (Deprecated): | Zip |
| Compression: | Zip |
Distribution 2
| Start Date: | 2011 |
|---|---|
| End Date: | Present |
| Download URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/Eastern_MN_State_LiDAR_Phases_3_4_and_5/ |
| Distributor: | U.S. Geological Survey (2011 - Present) |
| File Name: | Bulk Download |
| Description: |
Bulk download of the data files in LAZ format, based on a horizontal datum/projection of UTM Zone 15, NAD83, meters and a vertical datum of NAVD88 (GEOID09) and units in meters. This url links to the USGS copy of the files, from which the Entwine Point Tile files originated. These have not been reviewed by OCM and the link is provided here for convenience. |
| File Type (Deprecated): | LAZ |
| Distribution Format: | LAS/LAZ - LASer |
| Compression: | Zip |
URLs
URL 1
| URL: | https://coast.noaa.gov/dataviewer/ |
|---|---|
| Name: | NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) |
| URL Type: |
Online Resource
|
| File Resource Format: | HTML |
| 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. |
URL 2
| URL: | https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B1_2011_LAS_2016%22 |
|---|---|
| Name: | USGS 3D Potree View - Block/Delivery 1 |
| URL Type: |
Online Resource
|
| Description: |
Link to view the Block/Delivery 1 point cloud (using the Entwine Point Tile (EPT) format) in the 3D Potree viewer. |
URL 3
| URL: | https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B2_2011_LAS_2016%22 |
|---|---|
| Name: | USGS 3D Potree View - Block/Delivery 2 |
| URL Type: |
Online Resource
|
| Description: |
Link to view the Block/Delivery 2 point cloud (using the Entwine Point Tile (EPT) format) in the 3D Potree viewer. |
URL 4
| URL: | https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B3_2011_LAS_2016%22 |
|---|---|
| Name: | USGS 3D Potree View - Block/Delivery 3 |
| URL Type: |
Online Resource
|
| Description: |
Link to view the Block/Delivery 3 point cloud (using the Entwine Point Tile (EPT) format) in the 3D Potree viewer. |
URL 5
| URL: | https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B4_2011_LAS_2016%22 |
|---|---|
| Name: | USGS 3D Potree View - Block/Delivery 4 |
| URL Type: |
Online Resource
|
| Description: |
Link to view the Block/Delivery 4 point cloud (using the Entwine Point Tile (EPT) format) in the 3D Potree viewer. |
URL 6
| URL: | https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B5_2011_LAS_2016%22 |
|---|---|
| Name: | USGS 3D Potree View - Block/Delivery 5 |
| URL Type: |
Online Resource
|
| Description: |
Link to view the Block/Delivery 5 point cloud (using the Entwine Point Tile (EPT) format) in the 3D Potree viewer. |
URL 7
| URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B1_2011_LAS_2016/ept.json |
|---|---|
| Name: | USGS Entwine Point Tiles (EPT) - Block/Delivery 1 |
| URL Type: |
Online Resource
|
| File Resource Format: | json |
| Description: |
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. |
URL 8
| URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B2_2011_LAS_2016/ept.json |
|---|---|
| Name: | USGS Entwine Point Tiles (EPT) - Block/Delivery 2 |
| URL Type: |
Online Resource
|
| File Resource Format: | json |
| Description: |
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. |
URL 9
| URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B3_2011_LAS_2016/ept.json |
|---|---|
| Name: | USGS Entwine Point Tiles (EPT) - Block/Delivery 3 |
| URL Type: |
Online Resource
|
| File Resource Format: | json |
| Description: |
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. |
URL 10
| URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B4_2011_LAS_2016/ept.json |
|---|---|
| Name: | USGS Entwine Point Tiles (EPT) - Block/Delivery 4 |
| URL Type: |
Online Resource
|
| File Resource Format: | json |
| Description: |
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. |
URL 11
| URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B5_2011_LAS_2016/ept.json |
|---|---|
| Name: | USGS Entwine Point Tiles (EPT) - Block/Delivery 5 |
| URL Type: |
Online Resource
|
| File Resource Format: | json |
| Description: |
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. |
URL 12
| URL: | https://www.mngeo.state.mn.us/chouse/elevation/arrowhead_data_delivery_dates.pdf |
|---|---|
| Name: | Block Areas and Delivery Dates |
| URL Type: |
Online Resource
|
| File Resource Format: | |
| Description: |
This pdf shows the block boundaries and their delivery dates. |
Data Quality
| Horizontal Positional Accuracy: |
Horizontal accuracy is +/- 3.8-foot at the 95% confidence level. |
|---|---|
| Vertical Positional Accuracy: |
1. Report from Woolpert: The LiDAR data vertical accuracy RMSE is 5.0 cm (0.16 ft). The data collected under this Task Order meets the National Standard for Spatial Database Accuracy (NSSDA) accuracy standards. The NSSDA standards specify that vertical accuracy be reported at the 95 percent confidence level for data tested by an independent source of higher accuracy: http://www.fgdc.gov/standards/projects/FGDC-standards-projects/accuracy/part3/index_html The Fundamental Vertical Accuracy (FVA) of the TIN: 9.8cm (0.31 ft) at a 95% confidence level, derived according to NSSDA, i.e., based on RMSE of 5.0 cm (0.16 ft) in the 'open terrain' land cover category. 2. Report from MN DNR: The LiDAR collected for this task order was tested using independent, locally provided validation points to meet a vertical accuracy of less than 15cm (0.49 foot) RMSEz. Vertical accuracies by Block/Delivery: Block/Delivery 1 - 6.7 cm RMSE Block/Delivery 2 - 9.9 cm RMSE Block/Delivery 3 - 9.6 cm RMSE Block/Delivery 4 - 4.3 cm RMSE Block/Delivery 5 - 10.2 cm RMSE |
| Completeness Report: |
The dataset is complete. |
| Conceptual Consistency: |
All formatted data are validated using commercial GIS software to ensure proper formatting and loading prior to delivery.The LIDAR data is visually inspected for completeness to ensure that are no gaps between flight lines. |
Data Management
| Have Resources for Management of these Data Been Identified?: | Yes |
|---|---|
| Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
| Do these Data Comply with the Data Access Directive?: | Yes |
| Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
| How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Data is backed up to tape and to cloud storage. |
Lineage
| Lineage Statement: |
The Arrowhead, MN lidar was ingested into the Data Access Viewer for custom product generation by leveraging USGS hosted Entwine Point Tiles. |
|---|
Sources
Entwine Point Tiles on AWS
| Contact Role Type: | Originator |
|---|---|
| Contact Type: | Organization |
| Contact Name: | USGS |
| Citation URL: | https://usgs.entwine.io/ |
| Citation URL Name: | USGS Entwine Point Cloud |
Process Steps
Process Step 1
| Description: |
Vendor Processing Steps: Woolpert Inc. was selected to provide LiDAR services for CFMS Contract Number B41672 T-Number 1029G Work Order #3 - Minnesota Arrowhead Region. Using Light Detection And Ranging (LiDAR) systems, 390 flight lines of high density data, at a nominal pulse spacing (NPS) of 1.0 meter for acquisition areas 1 and 2 while the remaining areas were collected and processed to meet a Nominal Post Spacing (NPS) of 1.5 meter, were collected over Minnesota counties of Carlton, Cook, Lake, St. Louis, and Itasca Counties and that portion of Koochiching County that comprises Voyageurs National Park (approximately 12,433 square miles). Multiple returns were recorded for each laser pulse along with an intensity value for each return. A total of 55 missions were flown over a 20 day period: May 03, 2011 through June 02, 2011. A minimum of two airborne global positioning system (GPS) base stations were used in support of the LiDAR data acquisition. 87 ground control points were surveyed through static methods. The geoid used to reduce satellite derived elevations to orthometric heights was Geoid09. All data for the task order is referenced to UTM 15N, NAD83, NAVD88, in meters. Airborne GPS data was differentially processed and integrated with the post processed IMU data to derive a smoothed best estimate of trajectory (SBET). The SBET was used to reduce the LiDAR slant range measurements to a raw reflective surface for each flight line. The coverage was classified to extract a bare earth digital elevation model (DEM) and separate last returns. In addition to the LAS deliverables, one layer of coverage were delivered in the ArcINFO ArcGrid binary format: bare-earth. LAS data were classified using the following standard ASPRS categories: 0 Unclassified, 1 Unknown, 2 Bare Earth, 3 Low Vegetation (less than 1.1 m), 4 Medium Vegetation (1.11 - 2.4 m), 5 High Vegetation (2.41 - 200 m), 6 Buildings, 7 Noise, 8 Model Keypoint, 9 Water, 14 Bridge Decks, 17 Overlap System Parameters for 1.0 NPs: Post Spacing (Minimum): 3.28 ft / 1.0 m AGL (Above Ground Level) average flying height: 6,500 ft / 1,981.2 m MSL (Mean Sea Level) average flying height: 7,700 ft / 2,247 m Average Ground Speed: 130 knots / 149 mph Field of View (full): 40 degrees Pulse Rate: 115.6 kHz Scan Rate: 41.8 Hz Side Lap (Minimum): 25% System Parameters for 1.5 NPs: Post Spacing (Minimum): 4.92 ft / 1.5 m AGL (Above Ground Level) average flying height: 7,800 ft / 2,377.4 m MSL (Mean Sea Level) average flying height: 8,900 ft / 2712.7 m Average Ground Speed: 150 knots / 172.6 mph Field of View (full): 40 degrees Pulse Rate: 99 kHz Scan Rate: 38 Hz Side Lap (Minimum): 25% Swath Width : variable due to multiple flying heights Distance Between Flight Lines: variable due to multiple flying heights Data is tiled by 1/16 1:24,000-scale quadrangle. |
|---|
Process Step 2
| Description: |
Additional Products Generated by Minnesota DNR staff: These products are in the geodatabase for each of the tiles: 1. Two-foot contours were created by resampling the 1-meter DEM to 3 meters, then smoothing the 3-meter grid using a neighborhood average routine, and then creating contours from this surface using standard ArcGIS processing tools. 2. Building outlines were created by extracting from the LAS files those points with Classification 6 (buildings), then grouping those points within 3 meters of each other into a single cluster and then creating an outline around those points. This was done using standard ArcMap tools. 3. Hillshades were created from the one- and three-meter DEMs using standard ArcMap tools. Azimuth value = 215, Altitude = 45, Z-Factor = 1 |
|---|
Process Step 3
| Description: |
Original point clouds in LAS/LAZ format were restructured as Entwine Point Tiles and stored on Amazon Web Services. The data were reprojected horizontally to WGS84 web mercator (EPSG 3857) and no changes were made to the vertical (NAVD88 GEOID09 meters). |
|---|---|
| Process Contact: | U.S. Geological Survey |
Process Step 4
| Description: |
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/USGS_LPC_MN_Arrowhead_B1_2011_LAS_2016/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B2_2011_LAS_2016/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B3_2011_LAS_2016/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B4_2011_LAS_2016/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_MN_Arrowhead_B5_2011_LAS_2016/ept.json |
|---|---|
| Process Date/Time: | 2022-12-02 00:00:00 |
| Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
| Catalog Item ID: | 68645 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:68645 |
| Metadata Record Created By: | Rebecca Mataosky |
| Metadata Record Created: | 2022-12-02 19:13+0000 |
| Metadata Record Last Modified By: | Rebecca Mataosky |
| Metadata Record Last Modified: | 2024-08-23 17:30+0000 |
| Metadata Record Published: | 2022-12-02 |
| Owner Org: | OCMP |
| Metadata Publication Status: | Published Externally |
| Do Not Publish?: | N |
| Metadata Last Review Date: | 2022-12-02 |
| Metadata Review Frequency: | 1 Year |
| Metadata Next Review Date: | 2023-12-02 |