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Short Citation:
OCM Partners, 2024: 2019 FEMA Lidar: 19 County MI, https://www.fisheries.noaa.gov/inport/item/63421.

Item Identification

Title: 2019 FEMA Lidar: 19 County MI
Status: Completed
Publication Date: 2019-10-23
Abstract:

This metadata record describes the Classified Point Cloud for the 2019 19 County FEMA Michigan LiDAR project. The data collection was funded by NRCS and USGS and the State of Michigan was in charge of collection. Nineteen counties (some with only partial coverage) were collected in total.

Product: These lidar data are processed Classified LAS 1.4 files, formatted to individual 2500 ft x 2500 ft tiles; used to create intensity images, 3D breaklines and hydro-flattened DEMs as necessary.

Dataset Description: The FEMA 19 County, Michigan 2019 Lidar project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.3. The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane Coordinate System, international feet and vertical datum of NAVD88 (GEOID12B), international feet. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to individual 2500 ft x 2500 ft tiles, as tiled Intensity Imagery, and as tiled bare earth DEMs; all tiled to the same 2500 ft x 2500 ft schema.

Ground Conditions: Lidar was collected in spring 2019, while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Sanborn Map Company, Inc. established ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. Additional independent accuracy check points in Open Terrain/Bare-Earth and Urban landcovers, in Grass, Brush and Trees categories were used to assess the vertical accuracy of the data. These check points were not used to calibrate or post process the data.

The NOAA Office for Coastal Management (OCM) downloaded laz files from this USGS site and processed the data to the Data Access Viewer (DAV) and to https:

ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MI_FEMA_2019_C19/

Counties included: Alcona, Alpena, Antrim, Cheboygan, Chippewa, Crawford, Dickinson, Gogebic, Houghton, Iron, Kalkaska, Keweenaw, Luce, Menominee, Montmorency, Ontonagon, Oscoda, Ostego, and Schoolcraft.

Purpose:

To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments and elevation modeling, etc. Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2 ft cell size. These lidar point cloud data were used to create intensity images, 3D breaklines, and hydro-flattened DEMs as necessary.

Supplemental Information:

CONTRACTOR: Sanborn Map Company

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

"ldrspec" : "USGS Lidar Base Specification v1.3",

"ldrsens" : "Leica ALS80-HP",

"ldrmaxnr" : "4",

"ldrnps" : "0.7",

"ldrdens" : "2.0",

"ldranps" : "0.70",

"ldradens" : "2.0",

"ldrfltht" : "2099",

"ldrfltsp" : "130",

"ldrscana" : "45",

"ldrscanr" : "42.1",

"ldrpulsr" : "255",

"ldrpulsd" : "4",

"ldrpulsw" : "0.48",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.25",

"ldrswatw" : "1739",

"ldrswato" : "20",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12B"

},

"ldraccur" : {

"ldrchacc" : "0",

"rawnva" : "0",

"rawnvan" : "0",

"clsnva" : "0",

"clsnvan" : "0",

"clsvva" : "0",

"clsvvan" : "0"

},

"lasinfo" : {

"lasver" : "1.4",

"lasprf" : "6",

"laswheld" : "Withheld (ignore) points were identified in these files using the standard LAS Withheld bit.",

"lasolap" : "Swath "overage" points were identified in these files using the standard LAS overlap bit.",

"lasintr" : "16",

"lasclass" : {

"clascode" : "1",

"clasitem" : "Processed, but Unclassified"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Bare Earth Ground"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Low Noise"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "20",

"clasitem" : "Ignored Ground"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridge Decks"

},

"lasclass" : {

"clascode" : "18",

"clasitem" : "High Noise"

}

}}

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE
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 > MICHIGAN
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
UNCONTROLLED
None Continent > North America > United States Of America > Michigan > Alcona County
None Continent > North America > United States Of America > Michigan > Alpena County
None Continent > North America > United States Of America > Michigan > Antrim County
None Continent > North America > United States Of America > Michigan > Cheboygan County
None Continent > North America > United States Of America > Michigan > Chippewa County
None Continent > North America > United States Of America > Michigan > Crawford County
None Continent > North America > United States Of America > Michigan > Dickinson County
None Continent > North America > United States Of America > Michigan > Houghton County
None Continent > North America > United States Of America > Michigan > Iron County
None Continent > North America > United States Of America > Michigan > Kalkaska County
None Continent > North America > United States Of America > Michigan > Keweenaw County
None Continent > North America > United States Of America > Michigan > Luce County
None Continent > North America > United States Of America > Michigan > Menominee County
None Continent > North America > United States Of America > Michigan > Montmorency County
None Continent > North America > United States Of America > Michigan > Ontonagon County
None Continent > North America > United States Of America > Michigan > Oscoda County
None Continent > North America > United States Of America > Michigan > Ostego County
None Continent > North America > United States Of America > Michigan > Schoolcraft County
None Continent > North America > United States Of America > Michigan >Gogebic County

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: None Planned
Data Presentation Form: Model (digital)
Distribution Liability:

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: FEMA, USGS, Sanborn Map Company, Inc.

Support Roles

Data Steward

CC ID: 1004119
Date Effective From: 2021
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: 1165156
Date Effective From: 2021-01-01
Date Effective To:
Contact (Organization): U.S. Geological Survey
Address: 12201 Sunrise Valley Drive
Reston, VA 20191
USA
URL: USGS Home

Distributor

CC ID: 1004118
Date Effective From: 2021
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: 1004120
Date Effective From: 2021
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: 1004121
Date Effective From: 2021
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: 1145481
W° Bound: -90.427196
E° Bound: -83.190516
N° Bound: 47.480399
S° Bound: 44.502672

Extent Group 1 / Time Frame 1

CC ID: 1164942
Time Frame Type: Range
Start: 2020-05-13
End: 2020-05-21
Description:

Dates of collection for Luce and Schoolcraft counties.

Extent Group 1 / Time Frame 2

CC ID: 1164943
Time Frame Type: Range
Start: 2020-04-24
End: 2020-04-28
Description:

Dates of collection for Alpena and Montmorency counties.

Extent Group 1 / Time Frame 3

CC ID: 1164944
Time Frame Type: Range
Start: 2019-05-07
End: 2020-04-27
Description:

Dates of collection for Antrim and Ostego counties.

Extent Group 1 / Time Frame 4

CC ID: 1145480
Time Frame Type: Range
Start: 2019-05-17
End: 2019-10-23

Extent Group 1 / Time Frame 5

CC ID: 1164945
Time Frame Type: Range
Start: 2020-05-02
End: 2020-06-28
Description:

Dates of collection for Dickinson, Iron, and Menominee counties.

Extent Group 1 / Time Frame 6

CC ID: 1203978
Time Frame Type: Range
Start: 2020-05-20
End: 2020-05-21
Description:

Additional dates of collection for Houghton, Keweenaw, and Ontonagon Counties

Extent Group 1 / Time Frame 7

CC ID: 1203977
Time Frame Type: Range
Start: 2019-05-26
End: 2019-06-08
Description:

Dates of collection for Houghton, Keweenaw, and Ontonagon Counties

Spatial Information

Spatial Resolution

Horizontal Distance: 0.7 Meter

Spatial Representation

Representations Used

Vector: Yes

Reference Systems

Reference System 1

CC ID: 1164939

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 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

CC ID: 1004125
Start Date: 2021-01-06
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9231/details/9231
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2021 - 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

CC ID: 1004126
Start Date: 2021-01-06
End Date: Present
Download URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MI_FEMA_2019_C19/
Distributor: U.S. Geological Survey (2021-01-01 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, based on a horizontal datum/projection of NAD83 (2011) State Plane Michigan Central (FIPS 2112) and North (FIPS 2111) International Feet, and a vertical datum of NAVD88 (GEOID12B) in International feet. 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

CC ID: 1004116
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: 1164940
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/MI_FEMA_2019_C19/
Name: Lidar Reports
URL Type:
Online Resource
File Resource Format: pdf
Description:

Lidar reports are available by county from the USGS rockyweb https site.

URL 3

CC ID: 1164941
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/MI_FEMA_2019_C19/
Name: Hydro Breaklines
URL Type:
Online Resource
File Resource Format: Zip
Description:

Hydro breaklines are available by county from the USGS rockyweb https site.

Data Quality

Vertical Positional Accuracy:

This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class.

Completeness Report:

These LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The raw point cloud is of good quality and data passes Non-Vegetated Vertical Accuracy specifications.

Conceptual Consistency:

Data covers the BPA specified for this project.

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:

Data were collected for the State of Michigan and the Michigan Statewide Authoritative Imagery & Lidar Program (MISAIL) by Sanborn Map Company, Inc.

USGS made the data available for download from the USGS rockyweb https site (https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MI_FEMA_2019_C19/). The NOAA Office for Coastal Management (OCM) downloaded the data and processed it to be available for custom download from the Data Access Viewer (DAV).

Sources

8235_Survey_Lower_Peninsula

CC ID: 1145475
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Steven A. Wood Professional Surveyor
Publish Date: 2019-07-23
Extent Type: Discrete
Extent Start Date/Time: 2019-07-23
Scale Denominator: 50
Source Contribution:

This data source was used (along with airborne GNSS/IMU data) to georeference the lidar point cloud data.

USGS Rockyweb Site

CC ID: 1164938
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: USGS

Process Steps

Process Step 1

CC ID: 1145476
Description:

The following steps describe the Raw Data Processing and Calibration process: 1) Technicians processed the raw data to LAS format flight lines using the ABGNSS/IMU solution. 2) Technicians use TerraSolid TerraMatch to calculate initial calibration adjustment angles by mission and/or block. This is accomplished by identifying ground and above ground feature observations between flight-lines and calculating the offsets. The technician then analyzed the results and made any necessary additional adjustment until it is acceptable. 3) Once the angle calculation was completed the adjusted settings were applied to all of the flight-lines of the mission and/or block and checked for consistency. The technicians utilized commercial and proprietary software packages to analyze how well flight-line overlaps match and adjusted as necessary until the results met the project specifications. 4) The technicians checked and corrected the vertical misalignment of all flight-lines and also the matching between data and ground truth. The relative accuracy was less than or equal to 6 cm RMSEz within individual swaths and less than or equal to 8 cm RMSDz or within swath overlap (between adjacent swaths). 5) The technicians ran a final vertical accuracy check of the calibrated point cloud against the surveyed check points after the z correction to ensure the requirement of NVA = 19.6 cm 95% Confidence Level (Required Accuracy) was met. Point classification was performed according to USGS Lidar Base Specification 1.3, and breaklines were collected for water features. Bare earth DEMs were exported from the classified point cloud using collected breaklines for hydroflattening.

Process Date/Time: 2019-01-01 00:00:00
Source: 8235_Survey_Lower_Peninsula

Process Step 2

CC ID: 1145477
Description:

LAS Point Classification: The point classification is performed as described below. The bare-earth surface is manually reviewed to ensure correct classification on the Class 2 (Ground) points. After the bare-earth surface is edited and QC'd, it is then used to generate all hydro-breaklines through heads-up digitization. All ground (ASPRS Class 2) lidar data inside of the Lake Pond and River Pond hydro flattening breaklines were then classified to water (ASPRS Class 9) using LP360 functionality. A buffer of 2 feet was also used around each hydro-flattened feature to classify these ground (ASPRS Class 2) points to Ignored ground (ASPRS Class 20). All Lake Pond Island and River Stream Island features were checked to ensure that the ground (ASPRS Class 2) points were reclassified to the correct classification after the automated classification was completed. All overlap data was processed through automated functionality provided by TerraScan to classify the overlapping flight-line data to approved classes by USGS. The overlap data was classified using standard LAS overlap bit. These classes were created through automated processes only and were not verified for classification accuracy. All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper is used as a final check of the bare-earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files for the Classified Point Cloud Data. LAStools, LP360 and TerraScan software was used to perform statistical analysis of the classes in the LAS files, on a per tile level to verify classification metrics and full LAS header information.

Process Date/Time: 2019-06-29 00:00:00

Process Step 3

CC ID: 1145478
Description:

Data for Alcona, Oscoda, Cheboygan, Chippewa, Gogebic, Crawford & Kalkaska counties was downloaded from the USGS Rocky ftp site in NAD83(2011) Michigan North & Central State Plane (Int ft) coordinates with vertical feet NAVD88 (Geoid12b) elevations. Data were converted to geographic coordinates, from vertical feet to meters, and to ellipsoid heights (using Geoid 12b) for ingest in the NOAA Digital Coast Data Access Viewer.

The observed classes process to the Data Access Viewer are: 1 = unclassified, 2 = ground, 7 = low noise, 9 = water, 17 = bridge deck, 18 = high noise, 20 = ignored ground near breakline

Process Contact: Office for Coastal Management (OCM)

Process Step 4

CC ID: 1164937
Description:

Data for Alpena, Antrim, Dickinson, Iron, Luce, Menominee, Montmorency, Ostego, and Schoolcraft counties were downloaded from the USGS Rocky ftp site in NAD83(2011) Michigan North & Central State Plane (Int ft) coordinates with vertical feet NAVD88 (Geoid12b) elevations. Data were converted to geographic coordinates, from vertical feet to meters, and to ellipsoid heights (using Geoid 12b) for ingest in the NOAA Digital Coast Data Access Viewer.

The observed classes processed to the Data Access Viewer are: 1 = unclassified, 2 = ground, 7 = low noise, 9 = water, 17 = bridge deck, 18 = high noise, 20 = ignored ground near breakline

Process Date/Time: 2022-03-30 00:00:00
Process Contact: Office for Coastal Management (OCM)

Process Step 5

CC ID: 1203979
Description:

Data for Houghton, Keweenaw, and Ontonagon counties were downloaded from the USGS Rocky ftp site in NAD83(2011) Michigan North State Plane (Int ft) coordinates with vertical feet NAVD88 (Geoid12b) elevations. Data were converted to geographic coordinates, from vertical feet to meters, and to ellipsoid heights (using Geoid 12b) for ingest in the NOAA Digital Coast Data Access Viewer.

The observed classes processed to the Data Access Viewer are: 1 = unclassified, 2 = ground, 7 = low noise, 9 = water, 17 = bridge deck, 18 = high noise, 20 = ignored ground near breakline

Process Date/Time: 2023-01-05 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 63421
GUID: gov.noaa.nmfs.inport:63421
Metadata Record Created By: Blake Waring
Metadata Record Created: 2021-01-06 19:23+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+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