2015 USGS Lidar: Gratiot County, MI
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:67801 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2015 USGS Lidar: Gratiot County, MI, https://www.fisheries.noaa.gov/inport/item/67801.
Full Citation Examples
Geographic Extent: Gratiot County, MI, covering approximately 572 square miles.
Dataset Description: Gratiot County, MI 2015 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 1.2. The data was developed based on a horizontal projection/datum of Michigan State Plane South, NAD83, international feet and vertical datum of NAVD1988 (GEOID12A), international feet. LiDAR data was delivered in RAW flight line swath format, then processed to create Classified LAS 1.4 Files formatted to 695 individual 5000 foot X 5000 foot tiles. Corresponding Intensity Images and Bare Earth DEMs tiles were created with the same 5000 foot X 5000 foot tile schema. Breaklines were produced in Esri geodatabase format.
Ground Conditions: LiDAR was collected in spring of 2015, 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, Quantum Spatial established a total of 91 Land Cover control points (71 QC checkpoints, 20 calibration control points) which were used to calibrate the LIDAR to known ground locations established throughout the Gratiot County, MI project area.
The NOAA Office for Coastal Management (OCM) downloaded 695 laz point data files from this USGS site:
https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_MI_GratiotCo_2015_LAS_2017/laz/
The data were processed to the Data Access Viewer (DAV) to make the data available for custom downloads.
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 data files in LAZ format, based on a horizontal datum/projection of MI State Plane South, NAD83(2011) (EPSG 6499), and a vertical datum of NAVD88 (GEOID12A) (EPSG: 6360) and units in feet. This url links to the USGS copy of the files. 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
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
-84.85970712225° W,
-84.35114821556° E,
43.47250631354° N,
43.11478080624° S
2015-04-18 - 2015-04-19
Item Identification
Title: | 2015 USGS Lidar: Gratiot County, MI |
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Status: | Completed |
Creation Date: | 2015 |
Publication Date: | 2015 |
Abstract: |
Geographic Extent: Gratiot County, MI, covering approximately 572 square miles. Dataset Description: Gratiot County, MI 2015 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 1.2. The data was developed based on a horizontal projection/datum of Michigan State Plane South, NAD83, international feet and vertical datum of NAVD1988 (GEOID12A), international feet. LiDAR data was delivered in RAW flight line swath format, then processed to create Classified LAS 1.4 Files formatted to 695 individual 5000 foot X 5000 foot tiles. Corresponding Intensity Images and Bare Earth DEMs tiles were created with the same 5000 foot X 5000 foot tile schema. Breaklines were produced in Esri geodatabase format. Ground Conditions: LiDAR was collected in spring of 2015, 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, Quantum Spatial established a total of 91 Land Cover control points (71 QC checkpoints, 20 calibration control points) which were used to calibrate the LIDAR to known ground locations established throughout the Gratiot County, MI project area. The NOAA Office for Coastal Management (OCM) downloaded 695 laz point data files from this USGS site: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_MI_GratiotCo_2015_LAS_2017/laz/ The data were processed to the Data Access Viewer (DAV) to make the data available for custom downloads. |
Purpose: |
The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 5 foot cell size.
|
Supplemental Information: |
USGS Contract: G10PC00026 Task Order Number: G15PD00343 CONTRACTOR: Quantum Spatial Lidar data were acquired and calibrated by the prime contractor. All follow-on processing was completed by the prime contractor.
The following are the USGS lidar fields in JSON: {
"ldrinfo" : {
"ldrspec" : "USGS-NGP Base Specification v1.2", "ldrsens" : "Leica ALS 70 Serial Number 7161", "ldrmaxnr" : "4", "ldrnps" : "0.65", "ldrdens" : "2.19", "ldranps" : "0.65", "ldradens" : "2.19", "ldrfltht" : "2100", "ldrfltsp" : "140", "ldrscana" : "20", "ldrscanr" : "37.7", "ldrpulsr" : "261", "ldrpulsd" : "4", "ldrpulsw" : "0.48", "ldrwavel" : "1064", "ldrmpia" : "1", "ldrbmdiv" : "0.22", "ldrswatw" : "1528.67", "ldrswato" : "9.97", "ldrgeoid" : "National Geodetic Survey (NGS) Geoid12A" }, "ldraccur" : {
"ldrchacc" : "0.196", "rawnva" : "0.094", "rawnvan" : "40", "clsnva" : "0.102", "clsnvan" : "40", "clsvva" : "0.076", "clsvvan" : "31" }, "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" : "11-bit", "lasclass" : {
"clascode" : "1", "clasitem" : "Undetermined/Unclassified" }, "lasclass" : {
"clascode" : "2", "clasitem" : "Bare earth" }, "lasclass" : {
"clascode" : "7", "clasitem" : "Low noise" }, "lasclass" : {
"clascode" : "9", "clasitem" : "Water" }, "lasclass" : {
"clascode" : "10", "clasitem" : "Ignored Ground" }, "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
|
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 | Gratiot 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 |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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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: | Quantum Spatial, USGS |
Support Roles
Data Steward
Date Effective From: | 2022 |
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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: | 2015 |
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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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -84.85970712225 | |
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E° Bound: | -84.35114821556 | |
N° Bound: | 43.47250631354 | |
S° Bound: | 43.11478080624 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2015-04-18 |
End: | 2015-04-19 |
Spatial Information
Spatial Representation
Representations Used
Grid: | No |
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Vector: | Yes |
Text / Table: | No |
TIN: | No |
Stereo Model: | No |
Video: | No |
Reference Systems
Reference System 1
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
Data is available online for bulk or 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: | 2022-08-31 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9557/details/9557 |
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: | 2022-08-31 |
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End Date: | Present |
Download URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_MI_GratiotCo_2015_LAS_2017/laz/ |
Distributor: | U.S. Geological Survey (2015 - Present) |
File Name: | Bulk Download |
Description: |
Bulk download of data files in LAZ format, based on a horizontal datum/projection of MI State Plane South, NAD83(2011) (EPSG 6499), and a vertical datum of NAVD88 (GEOID12A) (EPSG: 6360) and units in feet. This url links to the USGS copy of the files. 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/ |
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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://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_MI_GratiotCo_2015_LAS_2017/metadata/USGS_LPC_MI_GratiotCo_2015_LAS_2017.zip |
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Name: | USGS Additional Info |
URL Type: |
Online Resource
|
Description: |
This link is to the reports, breaklines, metadata, and shapefiles. |
Technical Environment
Description: |
MicroStation Version 8; TerraScan Version 15; TerraModeler Version 15; GeoCue Version 2014.1.21.1; ESRI ArcGIS 10.2; Global Mapper 16; Leica Cloud Pro 1.2; Windows 7 Operating System \\psihq_nx3200\Projects\26242_Gratiot_Co\ 42.1 GB and \\Matrix\LIDAR\26242_Gratiot_Co\ 398 GB |
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Data Quality
Vertical Positional Accuracy: |
The specifications require that only Nonvegetated Vertical Accuracy (NVA) be computed for raw lidar point cloud swath files. The vertical accuracy was tested with 40 independent survey located in open terrain. These check points (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 project. Specifications for this project require that the NVA be 19.6 cm or better AccuracyZ at 95 percent confidence level. The NVA was tested using 40 independent surveys located in open terrain. The survey check points were distributed throughout the project area. The 40 independent check points were surveyed using the closed level loop technique. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the lidar surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.162 international feet (4.9 cm). AccuracyZ has been tested to meet 19.6 cm Nonvegetated Vertical Accuracy at 95 percent confidence level using (RMSEz * 1.9600) as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. |
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Completeness Report: |
These raw 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 Nonvegetated Vertical Accuracy specifications. |
Conceptual Consistency: |
Data cover the entire area specified for this project. |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
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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 and processed by Quantum Spatial, Inc. and made available on the USGS ftp site. The data were downloaded from the USGS ftp site by the NOAA Office for Coastal Management (OCM) where the data were processed to make it available for custom download from the Data Access Viewer (DAV). |
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Sources
USGS
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_MI_GratiotCo_2015_LAS_2017/laz/ |
Citation URL Name: | USGS Rockyweb download site |
Process Steps
Process Step 1
Description: |
Classified LAS Processing: The bare earth surface is then manually reviewed to ensure correct classification on the Class 2 (Ground) points. After the bare-earth surface is finalized, 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 Double Line Drain hydro flattening breaklines were then classified to water (ASPRS Class 9) using TerraScan macro functionality. A buffer of 3 feet was also used around each hydro-flattened feature to classify these ground (ASPRS Class 2) points to Ignored ground (ASPRS Class 10). All Lake Pond Island and Double Line Drain 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 bridge decks were classified to Class 17. 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 identified using the Overlap Flag, per LAS 1.4 specifications. All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper us used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files for both the All Point Cloud Data and the Bare Earth. Quantum Spatial proprietary software was used to perform final statistical analysis of the classes in the LAS files, on a per tile level to verify final classification metrics and full LAS header information. |
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Process Date/Time: | 2015-01-01 00:00:00 |
Process Step 2
Description: |
The NOAA Office for Coastal Management (OCM) downloaded 695 laz point data files from this USGS site: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_MI_GratiotCo_2015_LAS_2017/laz/ The data were in MI State Plane South FIPS 2113 (NAD83 2011), international feet coordinates and NAVD88 (Geoid12A) elevations in feet. The data were classified as: 1 - Unclassified, 2 - Ground, 7 - Low Noise, 9 - Water, 10 - Ignored Ground, 17 - Bridge Decks, 18 - High Noise. OCM processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available on the DAV are: 1, 2, 7, 9, 10, 17, 18. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. Internal OCM scripts were run to check the number of points by classification and by flight ID and the gps, elevation, and intensity ranges. 2. Internal OCM scripts were run on the laz files to: a. Convert from orthometric (NAVD88) elevations to NAD83 (2011) ellipsoid elevations using the Geoid12A model b. Convert the laz files from MI State Plane South (NAD83 2011), international feet coordinates to geographic coordinates c, Convert from vertical units of feet to vertical units of meters. d. Assign the geokeys, sort the data by gps time and zip the data to database. |
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Process Date/Time: | 2022-08-31 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 67801 |
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GUID: | gov.noaa.nmfs.inport:67801 |
Metadata Record Created By: | Rebecca Mataosky |
Metadata Record Created: | 2022-08-31 19:08+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2022-08-31 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2022-08-31 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2023-08-31 |