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OCM Partners, 2022: 2012 MN DNR Lidar: Duluth Post-Flood, https://www.fisheries.noaa.gov/inport/item/59235.

Item Identification

Title: 2012 MN DNR Lidar: Duluth Post-Flood
Short Name: mn2012_duluth_postflood_m9075
Status: Completed
Publication Date: 2013-06-24
Abstract:

The Minnesota Elevation mapping project was developed by the Minnesota Digital Elevation Mapping Committee and executed by Minnesota State agencies with the assistance of the federal government county governments to acquire a highly accurate land surface elevation dataset for the State of Minnesota. High accuracy elevation data are essential to improving water quality, improving disaster preparedness, protecting existing infrastructure, planning flood and drought damage mitigation reports, enhancing natural resource protection, and strengthening decision-making capacity at all levels of government.

This project was funded by the Minnesota Clean Water Legacy Act in 2009 the project is expected to conclude in 2013.

Woolpert, a vendor on the Minnesota LiDAR Master Contract, has been selected to provide LiDAR services for Work Order #7- Minnesota Duluth Flood Area LiDAR Acquisition.

LiDAR data are in UTM Zone 15 coordinate system, NAD83 NAVD88 Geoid09 meters tiled by USGS 1/16, 1;24,000 quadrangles. Data provided include:

1) One meter digital elevation model

2) Edge-of-water breaklines

3) Classified LAS formatted point cloud data

The NOAA Office for Coastal Management (OCM) downloaded 964 laz files from ftp://ftp.gisdata.state.mn.us/pub/data/elevation/lidar/projects/duluth_fall_2012/ and processed the data to the Data Access Viewer (DAV) and to https.

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.

Supplemental Information:

State of Minnesota LiDAR Project

Contract Number: 40549

T-Number 1029G

Work Order #7

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
UNCONTROLLED
None beach
None erosion

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
UNCONTROLLED
None Continent > North America > United States Of America > Minnesota > Carlton County
None Continent > North America > United States Of America > Minnesota > City of Duluth
None Continent > North America > United States Of America > Minnesota > Lake County
None Continent > North America > United States Of America > Minnesota > Pine County
None Continent > North America > United States Of America > Minnesota > St. Louis County

Instrument Keywords

Thesaurus Keyword
UNCONTROLLED
Global Change Master Directory (GCMD) Instrument Keywords Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Lidar/Laser Sounders > LIDAR > Light Detection and Ranging

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords
AIRCRAFT

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:

Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, 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 any user of this data. Any use will be at the end-user’s sole risk.

Any conclusions drawn from the analysis of this information are not the responsibility of MN DNR, Woolpert, NOAA, the Office for Coastal Management or its partners.

Data Set Credit: Minnesota Department of Natural Resources

Support Roles

Data Steward

CC ID: 902956
Date Effective From: 2020
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

CC ID: 902955
Date Effective From: 2020
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

Metadata Contact

CC ID: 902957
Date Effective From: 2020
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

CC ID: 902958
Date Effective From: 2020
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

CC ID: 1144510
W° Bound: -93.159909
E° Bound: -91.551944
N° Bound: 47.441972
S° Bound: 46.334511

Extent Group 1 / Time Frame 1

CC ID: 1144505
Time Frame Type: Discrete
Start: 2012-10-29

Extent Group 1 / Time Frame 2

CC ID: 1144506
Time Frame Type: Discrete
Start: 2012-10-30

Extent Group 1 / Time Frame 3

CC ID: 1144507
Time Frame Type: Discrete
Start: 2012-10-31

Extent Group 1 / Time Frame 4

CC ID: 1144508
Time Frame Type: Discrete
Start: 2012-11-02

Extent Group 1 / Time Frame 5

CC ID: 1144509
Time Frame Type: Discrete
Start: 2012-11-08

Spatial Information

Spatial Representation

Representations Used

Grid: No
Vector: Yes
Text / Table: No
TIN: No
Stereo Model: No
Video: No

Vector Representation 1

CC ID: 902949
Point Object Present?: Yes
Point Object Count: 13983144766

Reference Systems

Reference System 1

CC ID: 1144503

Coordinate Reference System

CRS Type: Geographic 3D
EPSG Code: EPSG:6319
EPSG Name: NAD83(2011)
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

Data are 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

CC ID: 902966
Start Date: 2020-04-06
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9075
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2020 - 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: Zip
Compression: Zip

Distribution 2

CC ID: 902967
Start Date: 2020-04-06
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9075/index.html
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2020 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document. They will be in an orthometric datum.

File Type: LAZ

URLs

URL 1

CC ID: 902951
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

CC ID: 902952
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9075/supplemental/mn2012_duluth_post_flood_m9075.kmz
Name: Browse graphic
URL Type:
Browse Graphic
File Resource Format: KML
Description:

This graphic displays the footprint for this lidar data set.

URL 3

CC ID: 902953
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9075/supplemental/LiDAR_Report_DuluthFloodArea.pdf
Name: Dataset report
URL Type:
Online Resource
File Resource Format: PDF
Description:

Link to data set report.

URL 4

CC ID: 906426
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9075/supplemental/duluth_2012_vertical_validation_report.pdf
Name: Validation Report
URL Type:
Online Resource
Description:

Link to the MN DNR Vertical Accuracy Validation Report.

Technical Environment

Description:

Microsoft Windows Vista Version 6.1 (Build 7600) ; TerraSolid LTD: Terrascan Version 12.05

Data Quality

Horizontal Positional Accuracy:

Compiled to meet +/- 3.8 ft horizontal accuracy at 95 percent confidence level.

Vertical Positional Accuracy:

From the Woolpert Report:

The LiDAR data vertical accuracy RMSE is 3.6 cm (0.12 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).

Tested 7.1cm (0.23ft) fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 Tested against the TIN using independent check points.

From the MN DNR Vertical Accuracy Validation Report:

NVA vertical accuracy RMSE is 10.6 cm.

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:

NOAA OCM downloaded the laz files from the MN DNR Lidar site (ftp://ftp.gisdata.state.mn.us/pub/data/elevation/lidar/projects/duluth_fall_2012/)

Sources

MN DNR

CC ID: 1144497
Contact Role Type: Originator
Contact Type: Organization
Contact Name: MN DNR

Process Steps

Process Step 1

CC ID: 1144498
Description:

Using Light Detection And Ranging (LiDAR) systems, 154 flight lines of high density data, at a nominal pulse spacing (NPS) of 1.5 meter, were collected over Minnesota counties of Lake, St Louis, Aitkin, Carlton, and Pine (approximately 3,078 sq. miles), along with a 100 meter buffer beyond the project tile boundary. Multiple returns were recorded for each laser pulse along with an intensity value for each return. A total of eleven (11) missions were flown from October 29, 2012 through Novembe 08, 2012. A minimum of three (3) airborne global positioning system (GPS) base stations were used in support of the LiDAR data acquisition. All data for this 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 ArcGrid binary format: bare-earth.

System Parameters for 1.5 NPs:

ALS70 Specifications

Post Spacing (Minimum): 4.92 ft / 1.5 m

AGL (Above Ground Level) average flying height: 7,799 ft / 2,377.1 m

MSL (Mean Sea Level) average flying height: 8,392 ft / 2,557.9m

Average Ground Speed: 150 knots / 172.6 mph

Field of View (full): 40 degrees

Pulse Rate: 115 kHz

Scan Rate: 25 Hz

Side Lap (Minimum): 25%

Optech ALTM Gemini Specifications

Post Spacing (Minimum): 4.92 ft / 1.5 m

AGL (Above Ground Level) average flying height: 6,800 ft / 2,072.6 m

MSL (Mean Sea Level) average flying height: 7,400 ft / 2255.5 m

Average Ground Speed: 150 knots / 172.6 mph

Field of View (full): 40 degrees

Pulse Rate: 100 kHz

Scan Rate: 29 Hz

Side Lap (Minimum): 25%

Process Date/Time: 2012-10-29 00:00:00

Process Step 2

CC ID: 1144499
Description:

The ALS70 and Optech Gemini calibration and system performance is verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing flight lines. The scanner scale factor and vertical accuracy is calculated through comparison of LiDAR data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw LiDAR data is reduced using the refined misalignment angles.

Process Date/Time: 2012-01-01 00:00:00

Process Step 3

CC ID: 1144500
Description:

Once the data acquisition and GPS processing phases are complete, the LiDAR data was processed immediately to verify the coverage had no voids. The GPS and IMU data was post processed using differential and Kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project.

Process Date/Time: 2012-11-11 00:00:00

Process Step 4

CC ID: 1144501
Description:

The individual flight lines were inspected to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches to obtain a homogenous coverage throughout the project area. 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 The LiDAR LAS files for this task order have been classified into the Default (Class 1), Ground (Class 2), Low Vegetation (Class 3), Medium Vegetation (Class 4), High Vegetation (Class 5)

Buildings (Class 6), Noise (Class 7), Model Keypoints (Class 8), Water (Class 9), Ignored Ground(Class 10), bridges (Class 14), and Overlap (Class 17) classifications. The bare-earth (Class 2 - Ground) LiDAR points underwent a manual QA/QC step to verify that artifacts have been removed from the bare-earth surface. The surveyed ground control points are used to perform the accuracy checks and statistical analysis of the LiDAR dataset.

Process Date/Time: 2012-10-30 00:00:00

Process Step 5

CC ID: 1144502
Description:

The NOAA Office for Coastal Management (OCM) downloaded 964 laz files from ftp://ftp.gisdata.state.mn.us/pub/data/elevation/lidar/projects/duluth_fall_2012/

The files contained elevation and intensity measurements for the Duluth Post-Flood project area. The data were in UTM 15, NAD83, meters coordinates and NAVD88 (Geoid09) elevations in meters. The data were classified as: 1 - Unclassified, 2 - Ground, 3 - Low Veg, 4 - Medium Veg, 5 - High Veg, 6 - Buildings, 7 - Noise, 8 - Model Keypoint, 9 - Water, 10 - Ignored Ground, 14 - Bridge Decks, 17 - Overlap. The NOAA Office for Coastal Management processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available on the DAV are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 17.

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. Internal OCM scripts were run on the laz files to convert from orthometric (NAVD88) elevations to ellipsoid elevations using the Geoid09 model, to convert from UTM 15, NAD83, meters coordinates to geographic coordinates, to assign the geokeys, to sort the data by gps time and zip the data to database and to http.

Process Date/Time: 2020-04-03 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 59235
GUID: gov.noaa.nmfs.inport:59235
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2020-04-06 15:54+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-03-16
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16