Slide Menu
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2023: Oceana County - Michigan Lidar DEM 2017, https://www.fisheries.noaa.gov/inport/item/55534.

Item Identification

Title: Oceana County - Michigan Lidar DEM 2017
Short Name: 2017 Lidar: Oceana, MI 8662
Status: Completed
Publication Date: 2017
Abstract:

This metadata record describes the lidar-based digital elevation model (DEM) for the 2017 Michigan LiDAR project covering approximately 512 square miles, covering Oceana County.

Purpose:

To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments, and hydrologic modeling. LAS data products are suitable for 1 foot contour generation. USGS LiDAR Base Specification 1.2, QL2. 19.6 cm NVA.

Supplemental Information:

The following are the USGS lidar fields in JSON of the original input files:

{

"ldrinfo" : {

"ldrspec" : "USGS Base Specification 1.2, QL2 meeting 19.6cm NVA",

"ldrsens" : "Leica ALS70",

"ldrmaxnr" : "4",

"ldrnps" : "0.67",

"ldrdens" : "2.2",

"ldranps" : "0.67",

"ldradens" : "2.2",

"ldrfltht" : "2345",

"ldrfltsp" : "130",

"ldrscana" : "38",

"ldrscanr" : "47.3",

"ldrpulsr" : "235",

"ldrpulsd" : "10",

"ldrpulsw" : "0.53",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.3",

"ldrswatw" : "1615",

"ldrswato" : "30",

"ldrcrs" : "NAD_1983_2011_StatePlane_Michigan_South_FIPS_2113_Ft_Intl",

"ldrgeoid" : "NGS Geoid12B"

},

"ldraccur" : {

"ldrchacc" : "0",

"rawnva" : "0.176",

"rawnvan" : "58",

"clsnva" : "0.178",

"clsnvan" : "58",

"clsvva" : "0.191",

"clsvvan" : "48"

},

"lasinfo" : {

"lasver" : "1.4",

"lasprf" : "6",

"laswheld" : "Withheld points were identified in these files with the withheld flag",

"lasolap" : "Overlap points were identified in these files with the overlap flag",

"lasintr" : "16",

"lasclass" : {

"clascode" : "1",

"clasitem" : "Unclassified"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Bare earth"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Noise"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignored Ground (Breakline Proximity)"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridges"

},

"lasclass" : {

"clascode" : "18",

"clasitem" : "High Noise"

}

}}

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
UNCONTROLLED
ISO 19115 Topic Category elevation
MI ALS70
MI Bare Earth
MI ground points
MI Intensity return
MI mapping
MI Overlap points
None DEM
None Digital Elevation Model
None laser
None lidar
None Topography

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
VERTICAL LOCATION > LAND SURFACE
UNCONTROLLED
MI Michigan
MI Oceana, Mason
MI United States
None U.S. Coastline

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
UNCONTROLLED
Global Change Master Directory (GCMD) Platform Keywords Aircraft > 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: Unknown
Data Presentation Form: Map (digital)
Entity Attribute Detail Citation:

USGS Base Specification 1.2, QL2 meeting 19.6 cm NVA

Distribution Liability:

The State of Michigan Geographic Information Systems digital data have been tested and their documentation carefully reviewed. However, the State of Michigan and its representatives make no warranty or representation, either expressed or implied, with respect to the digital data and their documentation, their quality, performance, merchantability, or fitness for a particular purpose. The digital data are distributed on "as is" basis, and the user assumes all risk to their quality, the results obtained from their use, and the performance of the data. In no event will the State of Michigan or its representatives be liable for any direct, indirect, special, incidental or consequential damages resulting from and defect in the State of Michigan or in their documentation. This disclaimer of warranty is exclusive and in lieu of all others, oral or written, express or implied. No agent or employee is authorized to make any modification, extension, or addition to this warranty.

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: State of Michigan (SOM)

Support Roles

Data Steward

CC ID: 822012
Date Effective From: 2018
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: 822013
Date Effective From: 2018
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: 822014
Date Effective From: 2018
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: 822015
Date Effective From: 2018
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: 822010
W° Bound: -86.539744
E° Bound: -86.035556
N° Bound: 43.81499
S° Bound: 43.463623

Extent Group 1 / Time Frame 1

CC ID: 822009
Time Frame Type: Range
Start: 2017-04-08
End: 2017-04-09

Spatial Information

Spatial Resolution

Horizontal Distance: 2.0 Foot

Spatial Representation

Representations Used

Grid: Yes

Grid Representation 1

CC ID: 822041
Dimension Count: 2
Cell Geometry: Point
Transformation Parameters Available?: Yes

Axis Dimension 1

Dimension Type: Row
Size: 1250
Resolution Type: Length
Resolution: 2.0 Foot
Description:

Size of a single tile. Tiles are 1250 x 1250 pixels.

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for 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: 822016
Start Date: 2019
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8662
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2018 - 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.

Compression: Zip

Distribution 2

CC ID: 822017
Start Date: 2018
End Date: Present
Download URL: https://coast.noaa.gov/htdata/raster2/elevation/MI_31Co-Oceana_2017_8662
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2018 - 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.

File Type: GeoTIFF

URLs

URL 1

CC ID: 822018
URL: https://coast.noaa.gov/
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information on the NOAA Office for Coastal Management (OCM)

URL 2

CC ID: 822019
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 3

CC ID: 822020
URL: https://coast.noaa.gov/htdata/raster2/elevation/MI_31Co-Oceana_2017_8662/data_extent_oceana_m8662.kmz
Name: Browse graphic
URL Type:
Browse Graphic
File Resource Format: KML
Description:

This graphic displays the footprint for this lidar data set.

Technical Environment

Description:

Microsoft Windows 7; ESRI ArcCatalog 9.3.1.1850

Data Quality

Horizontal Positional Accuracy:

Horizontal positional accuracy for Oceana is dependent upon the quality of the GPS/INS solution, sensor calibration and ground conditions at the time of data capture. The standard system results for horizontal accuracy meet or exceed the project specified 1.0 meter RMSE. Qualitative value: 1.0, Test that produced the valued: For Oceana, this value is computed by comparing ground control to a DEM derived from the classified LiDAR data and represents the RMSE of residuals on controls within the project area.

Vertical Positional Accuracy:

For the DEM data derived from the classified point cloud, the NVA and VVA were computed. The vertical accuracy was tested with independent survey check points located in various terrain types within Oceana. These check points were not used in the calibration or post processing of the lidar point cloud data. The survey check points were distributed throughout the block area. Specifications for this project require that the NVA be 19.6 cm or better @ 95 percent confidence level.

Qualitative value: 0.090m RMSE, or 0.176m NVA @ 95 percent Confidence Level 0.091m RMSE, or 0.178m NVA @ 95 percent Confidence Level 0.089m RMSE, or 0.191m VVA @ 95th Percentile, Test that produced the value: The raw NVA was tested using 58 independent survey check points located in flat terrain types within the Oceana. The survey checkpoints were distributed throughout the block area. The 58 independent check points were surveyed using static GPS base stations collecting point location for 20 minute intervals. Elevations were measured for the x,y,z location of each check point. Elevations interpolated from the DEM surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.088 m. AccuracyZ has been tested to meet 10 cm Nonvegetated Vertical Accuracy at 95 Percent confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. The NVA was tested using 58 independent survey check points located in bare earth terrain types within the Oceana. The 58 independent check points contained all NVA points and were surveyed using static GPS base stations collecting point location for 20 minute intervals. Elevations were measured for the x,y,z location of each check point. Elevations interpolated from the DEM surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.091m, or 0.178m @ 95 percent confidence level defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines. The VVA was tested using 48 independent survey check points located in various vegetation terrain types within the Oceana. The 48 independent check points were surveyed using static GPS base stations collecting point location for 20 minute intervals. Elevations were measured for the x,y,z location of each check point. Elevations interpolated from the DEM surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.093m, or 0.196m @ 95th Percentile defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines.

Completeness Report:

LiDAR data is collected for the project area. Post processing of the simultaneously acquired GPS/INS is performed and applied to the laser returns to output a point cloud in the specified project coordinate system and datums. The point cloud data is then subjected to automated classification routines to assign all points in the point cloud to ground, water, overlap and unclassified point classes. Anomalous laser returns that occur infrequently are removed entirely from the data set. Once clean bare earth points are established, DEMs are created using bare earth points and hydro features. The DEM surface is then compared to the survey checkpoints. These accuracies must pass the Non-Vegetated and Vegetated Vertical Accuracy specifications.

Conceptual Consistency:

LiDAR data is collected within the project area and processed. After the DEMs were created, the dataset was verified against control. The control points for Oceana were collected as part of a larger control area that includes Mason County

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
Is Access to the Data Limited Based on an Approved Waiver?: No
Actual or Planned Long-Term Data Archive Location: NCEI-CO

Lineage

Lineage Statement:

Lidar data were collected via an airborne platform and lidar sensor. They were then processed to a classified point cloud and finally a digital elevation model.

Sources

Classified lidar

CC ID: 822030
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Sanborn Map Company Inc.
Extent Type: Discrete
Extent Start Date/Time: 2017
Scale Denominator: 1200
Source Contribution:

The classified lidar point cloud is used to derive various data products such as, but not limited to, bare earth gridded DEM, triangulated irregular networks (TIN), contours, digital surface models (DSM). The output format is fully compliant LAS v1.4, Point Record Format 6

DEM

CC ID: 822044
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Sanborn Map Company Inc.

Ground control

CC ID: 822027
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Sanborn Map Company Inc.
Publish Date: 2010-01-01
Extent Type: Discrete
Extent Start Date/Time: 2017
Source Contribution:

Targeted ground control is used to create a digital control file and control report as well as QC check of LiDAR accuracy. Predefined points (NGS when available) within the project area are targeted.

LiDAR Data

CC ID: 822026
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Sanborn Map Company Inc.
Extent Type: Discrete
Extent Start Date/Time: 2017
Source Contribution:

Aerial LiDAR and GPS/IMU data are recorded for the defined project area at an altitude, flight speed, scanner swath width and scanner pulse frequency to achieve the design goals of the project.

Post processed GPS/INS

CC ID: 822028
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Sanborn Map Company Inc.
Extent Type: Discrete
Extent Start Date/Time: 2017
Scale Denominator: 1200
Source Contribution:

Post processed GPS/INS is applied to the lidar point data to georeference each point in the project coordinate system

Post processed lidar

CC ID: 822029
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Sanborn Map Company Inc.
Extent Type: Discrete
Extent Start Date/Time: 2017
Scale Denominator: 1200
Source Contribution:

The post processed lidar data has been projected and oriented in the specified coordinate system as an un-classified point cloud.

Tile Definition

CC ID: 822031
Contact Role Type: Originator
Contact Type: Organization
Contact Name: State of Michigan
Extent Type: Discrete
Extent Start Date/Time: 2017
Scale Denominator: 1200
Source Contribution:

The tile definition defines discreet non-overlapping rectangular areas used as cut lines to break up the large classified lidar dataset into smaller, more manageable data tiles. Each tile is 2500ft by 2500ft in dimension.

Process Steps

Process Step 1

CC ID: 822032
Description:

At selected locations throughout the site, accurate GPS coordinates and elevations are surveyed and the points are marked with targets.

Process Date/Time: 2017-01-01 00:00:00

Process Step 2

CC ID: 822033
Description:

New LiDAR data is captured for the project area using a Leica ALS70 LiDAR instrument an integrated IPAS20 GPS/INS system mounted within a Aero Commander twin engine airplane.

Process Date/Time: 2017-01-01 00:00:00

Process Step 3

CC ID: 822034
Description:

The airborne GPS data is post-processed in Inertial Explorer software and LEICA CloudPro software to determine the LiDAR sensor's angle and orientation in the terrain (project) coordinate system and datums during the survey.

Process Date/Time: 2017-01-01 00:00:00

Process Step 4

CC ID: 822035
Description:

The post processed GPS/INS solution is applied to the raw lidar data to orient and project the data points into the project area reference system as an unclassified point cloud.

Process Date/Time: 2017-01-01 00:00:00

Process Step 5

CC ID: 822036
Description:

The georeferenced lidar data is then classified and edited in Terrasolid Terrascan software. Data is classified to produce: Class 1: unclassified, Class 2: ground, Class 7: low point, Class 9: water, Class 10: ignored ground, Class 11: withheld.

Process Date/Time: 2017-01-01 00:00:00

Process Step 6

CC ID: 822037
Description:

The classified lidar data is exported as 2500 X 2500 foot tiles in the LAS format with any or all classes required to produce derivative products.

Process Date/Time: 2017-01-01 00:00:00

Process Step 7

CC ID: 822043
Description:

Bare-earth points from the classified lidar were interpolated to create a digital elevation model (DEM). The area was tiled with 1250 x 1250 pixel tiles at 2-foot pixel size.

Source: Classified lidar

Process Step 8

CC ID: 822038
Description:

Data were downloaded from the USGS Rocky ftp site in NAD83(2011) Michigan South State Plane (ft) coordinates with vertical feet NAVD88 (Geoid12b). Data were in individual zip files for each DEM tile. The tiles were unzipped to allow ingestion into the Digital Coast Data Access Viewer. The Data Access Viewer may change the georeferencing to meet user requests and those changes should be shown in subsequent process steps.

Process Date/Time: 2018-12-18 00:00:00
Process Contact: Office for Coastal Management (OCM)
Source: DEM

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2016 - 2017 NRCS 30 County MI Lidar

Point cloud from which these DEMs were created.

Catalog Details

Catalog Item ID: 55534
GUID: gov.noaa.nmfs.inport:55534
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2019-02-19 10:25+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2020-12-14
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2020-12-14
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2021-12-14