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Short Citation:
OCM Partners, 2023: 2015 SEWRPC Lidar: Southeast WI (Milwaukee, Ozaukee, Walworth, Washington, Waukesha Counties), https://www.fisheries.noaa.gov/inport/item/58870.

Item Identification

Title: 2015 SEWRPC Lidar: Southeast WI (Milwaukee, Ozaukee, Walworth, Washington, Waukesha Counties)
Short Name: wi2015_se_wi_m9016_metadata
Status: Completed
Publication Date: 2018-06-19
Abstract:

Geographical Extent:

Milwaukee, Ozaukee, Walworth, Washington, and Waukesha Counties in southeastern Wisconsin, covering approximately 2,071 square miles.

Dataset Description:

The SEWRPC 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 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1.2.

The deliverable data is referenced to the following horizontal projection/datum system as specified in the contract: NAD83 (2011) State Plane Wisconsin South Zone, US survey feet; NAVD88, US survey feet.

LiDAR data was delivered in RAW flight line swath format, classifed LAS 1.4 files formated using a 10,000 feet by 10,000 feet tile system, hydro flattened breaklines in shapefile and geodatabase format, and raster 2 feet Digital Elevation Models (DEM) also using the same individual 10,000-feet x 10,000-feet tiles.

Ground Conditions:

LiDAR collection began in Spring 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 227 QC points that were used to verify the accuracy of the LIDAR to known ground locations established throughout the project area.

The NOAA Office for Coastal Management (OCM) downloaded the laz files from this USGS site

ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/ and processed the data to the Data Access Viewer (DAV) and to https.

USGS_LPC_WI_SEWRPC_2017_LAS_2019

OCM also downloaded the Hydro breaklines and they are also available. These data are available for download at the link provided in the URL section of this metadata record. Please note that these products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM.

Purpose:

Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Breaklines and DEMs. The purpose of these lidar data was to produce high accuracy data for the inclussion of the USGS-3DEP program. These raw lidar point cloud data were used to create classified lidar LAS files, 3D breaklines, and hydro-flattened DEMs.

Supplemental Information:

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "Leica ALS70",

"ldrmaxnr" : "7",

"ldrnps" : "0.47",

"ldrdens" : "4.7",

"ldranps" : "< 0.71",

"ldradens" : ">2.0",

"ldrfltht" : "3200",

"ldrfltsp" : "150",

"ldrscana" : "25",

"ldrscanr" : "38.3",

"ldrpulsr" : "181.8",

"ldrpulsd" : "4",

"ldrpulsw" : "0.46",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.15",

"ldrswatw" : "1071",

"ldrswato" : "30",

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

},

"ldraccur" : {

"ldrchacc" : "-9999",

"rawnva" : "0.075",

"rawnvan" : "62",

"clsnva" : "0.075",

"clsnvan" : "62",

"clsvva" : "0.100",

"clsvvan" : "38"

},

"lasinfo" : {

"lasver" : "1.4",

"lasprf" : "6",

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

"lasolap" : "Overage (Overlap) points were identified in these files using the standard LAS Overlap bit flag.",

"lasintr" : "8 bit",

"lasclass" : {

"clascode" : "1",

"clasitem" : "Processed, but Unclassified"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Bare Earth"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Noise"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignored"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridge Decks"

}

}}

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
None Hydrology

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 > WISCONSIN
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
UNCONTROLLED
None Continent > North America > United States Of America > Wisconsin > Milwaukee County
None Continent > North America > United States Of America > Wisconsin > Ozaukee County
None Continent > North America > United States Of America > Wisconsin > Walworth County
None Continent > North America > United States Of America > Wisconsin > Washington County
None Continent > North America > United States Of America > Wisconsin > Waukesha 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
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 Quantum Spatial, Inc., SEWRPC, USGS, NOAA, the Office for Coastal Management or its partners.

Data Set Credit: Quantum Spatial, Inc. flew the LiDAR and initially processed the LiDAR data and the Southeastern Wisconsin Regional Planning Commission reformat/reclassified the delivered data in support of the USGS LiDAR Base Specifications, v1.2., Southeastern Wisconsin Regional Planning Commission

Support Roles

Data Steward

CC ID: 897116
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: 897117
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: 897118
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: 897119
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: 1143765
W° Bound: -88.780091
E° Bound: -87.777429
N° Bound: 43.544427
S° Bound: 42.491014

Extent Group 1 / Time Frame 1

CC ID: 1143764
Time Frame Type: Range
Start: 2015-03-24
End: 2015-04-03

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: 897108
Point Object Present?: Yes
Point Object Count: 30514364787

Reference Systems

Reference System 1

CC ID: 1143762

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: 897123
Start Date: 2020-02-12
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9016
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: 897124
Start Date: 2020-02-12
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9016/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: 897110
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: 897111
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9016/supplemental/wi2015_sw_wi_m9016.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: 897112
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9016/supplemental/2015_SEWRPC_Survey_Report_revised.pdf
Name: Dataset report
URL Type:
Online Resource
File Resource Format: PDF
Description:

Link to data set report.

URL 4

CC ID: 897113
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9016/supplemental/FOCUS_on_WashingtonCounty.pdf
Name: Dataset report
URL Type:
Online Resource
File Resource Format: PDF
Description:

Link to data set report.

URL 5

CC ID: 897114
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9016/supplemental/SEWRPC_USGS_Report_Final.pdf
Name: Dataset report
URL Type:
Online Resource
File Resource Format: PDF
Description:

Link to data set report.

URL 6

CC ID: 897154
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9016/breaklines/index.html
Name: Breaklines
URL Type:
Online Resource
Description:

Link to data set breaklines.

Technical Environment

Description:

LP360, Version 2017.1.54.7;

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 8 Operating System

Data Quality

Vertical Positional Accuracy:

The absolute vertical accuracy for the classified LAS tiles utlized 167 nonvegetated points (NVA). These points achieved a RMSE of 0.141 feet (4.3 cm) and resultant 95% confedence level of 0.276-feet. The above statistical tests as specified in the USGS guidelines for the classified LAS tiles indicated an accuracy that exceeded the specificed accuracy supporting a QL2 specifications.

Completeness Report:

These raw LAS data files collected by Quantum Spatial included 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
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

Sources

2015_SEWRPC_Survey_Report_revised

CC ID: 1143759
Contact Role Type: Originator
Contact Type: Organization
Contact Name: Quantum Spatial, Inc.
Publish Date: 2016-07-18
Extent Type: Range
Extent Start Date/Time: 2015-05-03
Extent End Date/Time: 2016-07-18
Source Contribution:

This data source was used (along with the airborne GPS/IMU Data) to aid in the georeferencing of the lidar point cloud data.

Process Steps

Process Step 1

CC ID: 1143760
Description:

Quantum Spatial 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.

Initially, all ground (ASPRS Class 2) LiDAR data inside of the Lake Pond and Double Line Drain hydro flattened 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 14.

All Overlap and Model Keypoint data was processed through automated functionality provided by TerraScan to classify the overlapping data to both ground (Class 18) and non-ground (Class 17) and the model keypoints (Class 8) data based flight line data

All data was manually reviewed by Quantum Spatial reviewed and any remaining artifacts were removed using functionality provided by TerraScan and TerraModeler. Global Mapper was used as a final check of the bare earth datase and provided to the Commission.

Upon the delivery of the LiDAR data sets, the Southeastern Wisconsin Regional Planning Commission inspected the data for quality assurance. After a number of iterations, the data was approved in July of 2016.

The Commission in support of the 3DEP project reprocessed the approved LiDAR data set to not only reproject and transform a number of counties to meet the NAD83(2011) datum requirements but also deliver the data in full compliance of the USGS Base LiDAR Specification for LAS version 1.4 format. This process utilized LP360 to create a macro filter to reclassify the overlap non-ground and ground to Class 1 and Class 2, respectively, and assign an overlap flag to the overlapping data and also reclassify the model keypoints to Class 2 with a model keypoint flag assigned. As part of the macro filter, also took into account the movement of the bridge points from Class 14 to Class 17.

Also, the Southeastern Wisconsin Regional Planning Commission transformed and reprojected the breakline data. Upon inspection of the transformed lakes and ponds, it was discovered that these flattened surfaces were not exactly flat due to the dynamic changes between NGVD29 and NAVD88. This required that each lake pond be individually set to the lowest elevation of the vertices found supporting that individual lake elevation so it could pass the flatness test. All rivers were not addressed since these features are not flat.

LP360 was then used to take the transformed LAS files with the correct classification and flags along with the final hydro flattened breaklines to generate 2-feet raster digital elevation models based on the same 10,000-feet by 10,000-feet tiling system used for the LAS files. The final tiles were inspected using Global Mapper to ensure proper triangulation and enforcement along with the vertical testing of the digital elevation models.

Lastly, LP360 was used to perform final statistical analysis of the classification of the LAS files, on a per tile level to verify final classification metrics and full LAS header information and the vertical accuracy of the ground points.

Process Date/Time: 2016-07-18 00:00:00

Process Step 2

CC ID: 1143761
Description:

The NOAA Office for Coastal Management (OCM) downloaded:

655 laz files from ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_WI_SEWRPC_2017_LAS_2019

The 655 files contained elevation and intensity measurements for the southeast Wisconsin project area. The data were in WI State Plane South NAD83 2011, US survey feet coordinates and NAVD88 (Geoid12B) elevations in feet. The data were classified as: 1 - Unclassified, 2 - Ground, 7 - Noise, 9 - Water, 10 - Ignored Ground, 17 - Bridge Decks. 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, 7, 9, 10, 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 Geoid12B model, to convert from WI State Plane South NAD 1983 2011,US survey feet coordinates to geographic coordinates, to convert from vertical units of feet to meters, to assign the geokeys, to sort the data by gps time and zip the data to database and to http.

Process Date/Time: 2020-02-12 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 58870
GUID: gov.noaa.nmfs.inport:58870
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2020-02-12 14:53+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-02-21 18:41+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