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OCM Partners, 2024: 2011 - 2012 New York State Department of Environmental Conservation (NYSDEC) Lidar: Coastal New York (Long Island and along the Hudson River), https://www.fisheries.noaa.gov/inport/item/49888.

Item Identification

Title: 2011 - 2012 New York State Department of Environmental Conservation (NYSDEC) Lidar: Coastal New York (Long Island and along the Hudson River)
Short Name: ny2011_hudson_longisland_m1408_metadata
Status: Completed
Publication Date: 2012-11
Abstract:

Light Detection and Ranging (LiDAR) data is remotely sensed high-resolution elevation data collected by an airborne collection

platform. This LiDAR dataset is a survey of areas of coastal New York, including Long Island, eastern Westchester, and the tidal

extents of the Hudson River. The project area consists of approximately 950 square miles. The project design of the LiDAR

data acquisition was developed to support a nominal post spacing of 1.0 meter or better (1.0 meter GSD). The LiDAR data vertical

accuracy is in compliance with the National Standard for Spatial Data Accuracy (NSSDA) RMSE estimation of elevation data in support

of 1 ft. contour mapping products. GMR Aerial Surveys Inc. d/b/a Photo Science, Inc. acquired 740 flight lines in 63 lifts

between November 2011 and April 2012, while no snow was on the ground, rivers were at or below normal levels, no strong onshore winds,

high waves, floods, or other anomalous weather conditions. Specified areas of the project were collected at a tide stage where

water levels are at least 1-foot below mean sea level (MSL). This collection was a joint effort by the NOAA Office for Coastal Management (OCM) and the New York State Department of Environmental Conservation. The data collection was performed with three

Cessna 206 single engine aircrafts, utilizing Optech Gemini sensors; collecting multiple return x, y, and z as well as intensity data.

The data were classified as Unclassified (1), Ground (2), Low Point (Noise) (7), Water (9), Breakline Edge (10), Withheld (11),

Tidal Water (14), Overlap Default (17), and Overlap Ground (18), Overlap Water (25), and Overlap Tidal Water (30). Upon receipt,

the NOAA Office for Coastal Management (OCM), for data storage and Digital Coast provisioning purposes, converted these classifications

to the following:

1 - Unclassified

2 - Ground

7 - Low Point (Noise)

9 - Water

NOAA tide gauges were used as the basis for flight planning the tidally coordinated areas. The Stevens Institute NY Harbor

Observation and Prediction System (NYHOPS) data were used to confirm accuracy of NOAA predicted tides in Hudson. Some areas were

collected using tidal restraints as listed below:

Tidal Wetlands and tributary mouths selected for tidal coordination at Mean Sea Level (MSL) minus 1 foot were:

Rondout Creek Outlet; Vanderburg Cove, Moodna Creek, Constitution Marsh, Iona Marsh, Annsville Creek, Croton River

Outlet, Marlboro Marsh, Manitou Marsh, Fishkill Creek Outlet, and Wappingers Creek Outlet. The Upper Hudson area from North

of Goose Island was also collected to the same specification.

Tidal Wetlands and tributary mouths selected for tidal coordination at Mean Sea Level (MSL) were Haverstraw at Minisceongo Creek

and Piermont Marsh.

On Long Island the following areas were collected at MSL:

1) the northern shore of Nassau and Suffolk counties from approximately Glen Cove on the western boundary to Nissequogue on

the eastern boundary

2) the Peconic Bay from Riverhead on the western boundary to the east end of Shelter Island and Accabonac Harbor on the eastern

boundary

3) western Great South Bay.

The remainder of the project area had no tidal restrictions for collection. LAS tiles indicate if they are tidally coordinated or not.

If tidal coordination only covers part of the tile the tile will be labeled tidally coordinated (i.e.MSL-1).

In order to post process the LiDAR data to meet task order specifications, Photo Science, Inc. established a total of 81 control

points that were used to calibrate the LiDAR to known ground locations established throughout the New York project area.

Trimble R8-3 GNSS receivers were used to complete the collection. Real Time Kinematic (RTK) survey methodology was

typically performed using the New York State Spatial Reference Network (NYSNet), a CORS/Real Time GPS Network.

Additionally, control values from various other projects completed by Photo Science in and around the project area, were used as

supplemental control points to assist in the calibration of the LiDAR dataset.

The dataset was developed based on a horizontal projection/datum of UTM NAD83 (NSRS2007), UTM Zone 18, meters and

vertical datum of NAVD1988 (GEOID09), meters. Upon receipt, for data storage and Digital Coast provisioning purposes, the NOAA

Office for Coastal Management converted the data to GRS80 Ellipsoid (GEOID09) heights, to geographic (NAD83, NSRS2007) coordinates,

and from las format to laz format.

LiDAR data were collected in RAW flightline swath format, processed to create Classified LAS 1.2 files formatted to 2093

individual 750m x 750m tiles, Hydro Flattening Breaklines in ESRI shapefile format, 1.0 meter gridded Tidal Water ERDAS IMAGINE (.img)

files formatted to 670 individual 3000m x 3000m tiles, and 1.0 meter gridded V-Datum ERDAS IMAGINE (.img) files formatted to the same

3000m x3000m tile schema. LiDAR data were originally delivered to NOAA/Dewberry for quality control validation under Delivery Lots 1 and 2.

The lineage (data quality), positional, content (completeness), attribution, logical consistency, and accuracies of all digital

elevation data produced conform to the specifications stipulated in NOAA Task Order EA133C11CQ0009 - T011.

Purpose:

The project was developed by the National Oceanic and Atmospheric Administration's (NOAA) Office for Coastal Management in

partnership with the New York State Department of Environmental Conservation (NYSDEC) to collect and deliver topographic elevation

point data derived from multiple return light detection and ranging (LiDAR) measurements for areas of coastal New York

including Long Island, eastern Westchester, and the tidal extents of the Hudson River. Data are intended for use in coastal management

decision making, including applications such as detailed mapping of areas at risk of sea level rise according to projections developed by

NYS and the remapping of Coastal Erosion Hazard Areas.

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.

Notes:

10532

Supplemental Information:

Lifts were flown out of specific airports at which base stations were set up and, sometimes, specific tide stations were used, creating another break in areas.

1B1 contained 46 flight lines and was flown on January 9, 2012 and January 11, 2012 with Optech SN247 in N2448G.

20N contained 39 flight lines and was flown on February 19-20, 2012 with Optech SN247 in N2448G.

ALB contained 31 flight lines and was flown on January 7, 2012 and January 9, 2012 with Optech SN247 in N2448G.

FRG-NOAA contained 144 flight lines flown on February 2-6, 2012; February 9, 2012; February 13-14, 2012 with Optech SN247 in N2448G.

GON contained 15 flight lines flown on November 26, 2011 with Optech SN240 in N9471R.

HTO contained 92 flight lines flown on January 15-16, 2012; January 18, 2012; and January 20, 2012 with Optech SN247 in N2448G.

HWV contained 110 flight lines flown on January 25, 2012; January 28, 2012; January 30-31, 2012 with Optech SN247 in N2448G.

POU contained 94 flight lines flown on December 12-14, 2012; and December 16, 2012 with Optech SN240 in N9471R.

SWF-NOAA contained 32 flight lines flown on December 18-19, 2011 with Optech SN240 in N9471R.

HPN contained 37 flight lines flown on April 6-7, 2012 with Optech SN246 in N7266Z.

1B1-TID-HUDSON contained 5 flight lines and was flown on February 20, 2012 with Optech SN247 in N2448G.

HPN-TID-CROTON contained 5 flight lines flown on February 19, 2012 with Optech SN247 in N2448G.

HPN-TID-HARVEST contained 6 flight lines flown on February 19, 2012 with Optech SN247 in N2448G.

HPN-TID-PIERMON contained 4 flight lines flown on February 18, 2012 with Optech SN247 in N2448G

SWF-TID-IONA-MA contained 9 flight lines flown February 17, 2012 with Optech SN247 in N2448G.

SWF-TID-MARL-WA contained 5 flight lines flown February 17, 2012 with Optech SN247 in N2448G.

SWF-TID-MOOD-FI contained 7 flight lines flown February 17, 2012 with Optech SN247 in N2448G.

A footprint of this data set may be viewed in Google Earth at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1408/supplemental/2011_2012_NYSDEC_Lidar_Long_Island_and_Hudson_River.kmz

The Lidar Quality Assurance (QA) Report for the Hudson River area of this data set may be viewed at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1408/supplemental/Coastal_NY_Priority1_Dewberry_QA_Report.pdf

The Lidar Quality Assurance (QA) Report for the Long Island area of this data set may be viewed at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1408/supplemental/Coastal_NY_Priority2_Dewberry_QA_Report.pdf

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Unknown
Distribution Liability:

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

Data Set Credit: New York State Department of Environmental Conservation (NYSDEC)

Support Roles

Data Steward

CC ID: 681951
Date Effective From: 2012-11
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: 681953
Date Effective From: 2012-11
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: 681954
Date Effective From: 2012-11
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: 681952
Date Effective From: 2012-11
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: 1133223
W° Bound: -74.078028
E° Bound: -71.828074
N° Bound: 42.786433
S° Bound: 40.558624

Extent Group 1 / Time Frame 1

CC ID: 1133188
Time Frame Type: Discrete
Start: 2011-11-26

Extent Group 1 / Time Frame 2

CC ID: 1133189
Time Frame Type: Discrete
Start: 2011-12-12

Extent Group 1 / Time Frame 3

CC ID: 1133190
Time Frame Type: Discrete
Start: 2011-12-13

Extent Group 1 / Time Frame 4

CC ID: 1133191
Time Frame Type: Discrete
Start: 2011-12-14

Extent Group 1 / Time Frame 5

CC ID: 1133192
Time Frame Type: Discrete
Start: 2011-12-16

Extent Group 1 / Time Frame 6

CC ID: 1133193
Time Frame Type: Discrete
Start: 2011-12-18

Extent Group 1 / Time Frame 7

CC ID: 1133194
Time Frame Type: Discrete
Start: 2011-12-19

Extent Group 1 / Time Frame 8

CC ID: 1133195
Time Frame Type: Discrete
Start: 2012-01-07

Extent Group 1 / Time Frame 9

CC ID: 1133196
Time Frame Type: Discrete
Start: 2012-01-09

Extent Group 1 / Time Frame 10

CC ID: 1133197
Time Frame Type: Discrete
Start: 2012-01-11

Extent Group 1 / Time Frame 11

CC ID: 1133198
Time Frame Type: Discrete
Start: 2012-01-15

Extent Group 1 / Time Frame 12

CC ID: 1133199
Time Frame Type: Discrete
Start: 2012-01-16

Extent Group 1 / Time Frame 13

CC ID: 1133200
Time Frame Type: Discrete
Start: 2012-01-18

Extent Group 1 / Time Frame 14

CC ID: 1133201
Time Frame Type: Discrete
Start: 2012-01-20

Extent Group 1 / Time Frame 15

CC ID: 1133202
Time Frame Type: Discrete
Start: 2012-01-25

Extent Group 1 / Time Frame 16

CC ID: 1133203
Time Frame Type: Discrete
Start: 2012-01-28

Extent Group 1 / Time Frame 17

CC ID: 1133204
Time Frame Type: Discrete
Start: 2012-01-30

Extent Group 1 / Time Frame 18

CC ID: 1133205
Time Frame Type: Discrete
Start: 2012-01-31

Extent Group 1 / Time Frame 19

CC ID: 1133206
Time Frame Type: Discrete
Start: 2012-02-02

Extent Group 1 / Time Frame 20

CC ID: 1133207
Time Frame Type: Discrete
Start: 2012-02-03

Extent Group 1 / Time Frame 21

CC ID: 1133208
Time Frame Type: Discrete
Start: 2012-02-04

Extent Group 1 / Time Frame 22

CC ID: 1133209
Time Frame Type: Discrete
Start: 2012-02-05

Extent Group 1 / Time Frame 23

CC ID: 1133210
Time Frame Type: Discrete
Start: 2012-02-06

Extent Group 1 / Time Frame 24

CC ID: 1133211
Time Frame Type: Discrete
Start: 2012-02-09

Extent Group 1 / Time Frame 25

CC ID: 1133212
Time Frame Type: Discrete
Start: 2012-02-10

Extent Group 1 / Time Frame 26

CC ID: 1133213
Time Frame Type: Discrete
Start: 2012-02-13

Extent Group 1 / Time Frame 27

CC ID: 1133214
Time Frame Type: Discrete
Start: 2012-02-14

Extent Group 1 / Time Frame 28

CC ID: 1133215
Time Frame Type: Discrete
Start: 2012-02-17

Extent Group 1 / Time Frame 29

CC ID: 1133216
Time Frame Type: Discrete
Start: 2012-02-18

Extent Group 1 / Time Frame 30

CC ID: 1133217
Time Frame Type: Discrete
Start: 2012-02-19

Extent Group 1 / Time Frame 31

CC ID: 1133218
Time Frame Type: Discrete
Start: 2012-02-20

Extent Group 1 / Time Frame 32

CC ID: 1133219
Time Frame Type: Discrete
Start: 2012-02-22

Extent Group 1 / Time Frame 33

CC ID: 1133220
Time Frame Type: Discrete
Start: 2012-02-23

Extent Group 1 / Time Frame 34

CC ID: 1133221
Time Frame Type: Discrete
Start: 2012-04-06

Extent Group 1 / Time Frame 35

CC ID: 1133222
Time Frame Type: Discrete
Start: 2012-04-07

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL:

https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1408

;

Data Access Constraints:

None

Data Use Constraints:

None

1. The NYS DEC / NOAA asks to be credited in derived products.

2. Any documentation provided is an integral part of the data set. Failure to use the documentation in conjunction with the digital

data constitutes misuse of the data.

3. Although every effort has been made to ensure the accuracy of information, errors may be reflected in the data supplied. The user

must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors,

original map scale, collection methodology, currency of data, and other conditions.

4. Users should be aware that temporal changes may have occurred since this data set was collected and that 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: 741906
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1408
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 741907
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1408/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 741909
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 741910
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 3

CC ID: 741911
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1408/supplemental/2011_2012_NYSDEC_Lidar_Long_Island_and_Hudson_River.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar coverage for this data set in Long Island, New York and along the

Hudson River.

Activity Log

Activity Log 1

CC ID: 682029
Activity Date/Time: 2017-03-20
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 682028
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718468
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741908
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

MicroStation Version 8; TerraScan Version 12; TerraModeler Version 12; GeoCue Version 2011.1.20.4 (64-bit);

ESRI ArcGIS 10.0; Global Mapper 13; Optech DashMAP 5.2000

Data Quality

Accuracy:

The project area required LiDAR to be collected on 1.0 meter GSD or better and processed to meet a bare earth vertical accuracy of 15.0 centimeters

RMSEz or better.

Horizontal Positional Accuracy:

Data collected to meet 50 cm RMSE.

Vertical Positional Accuracy:

Deliverables were tested by Photo Science for both vertical and horizontal accuracy. All data is seamless from one tile to the next,

no gaps or no data areas. Although collected on a tile-by-tile basis, breaklines are merged together to produce a single deliverable dataset.

Checks are done to ensure that the data is seamless from one tile to the next before being combined and that breaklines meeting the project

requirements have been collected across the entire project area. The vertical unit of the data file is in decimal meters with

2-decimal point precision. Combining the breaklines with LiDAR data to create other deliverables is another check of the data.

The reported RMSEz value was determined using the calibration control points, and not the Blind Control. The calibration control

points are the same points that were used to remove any bias in the dataset before bare earth editing.

The listed RMSEz value shown below was calculated from the ground (ASPRS Class 2) data in the final Classified LAS file.

; Quantitative Value: 0.09 meters, Test that produced the value: RMSE in meters, as calculated from Classified LAS files

Completeness Report:

Datasets contain complete coverage of project area and tiles.

Conceptual Consistency:

Raw Flightlines, Classified LAS files, Breaklines, and Raster DEMs were tested by Photo Science for both vertical and horizontal accuracy.

Although collected on a tile-by-tile basis, breaklines are merged together to produce a single deliverable dataset. Checks are done to ensure that

the data is seamless from one tile to the next before being combined and that breaklines meeting the project requirements have been collected

across the entire project area. Combining the breaklines with LiDAR data to create other deliverables is another check of the data.

All data are seamless from one tile to the next, no gaps or no data areas.

Lineage

Sources

Control

CC ID: 1133182
Publish Date: 2011-01-01
Extent Type: Discrete
Extent Start Date/Time: 2011
Source Contribution:

Control points are used as a known elevation to adjust the LiDAR data to the surface. | Source Geospatial Form: digital data | Type of Source Media: hard drive

LiDAR

CC ID: 1133183
Publish Date: 2012-01-01
Extent Type: Range
Extent Start Date/Time: 2011-11-26
Extent End Date/Time: 2012-04-07
Source Contribution:

LiDAR points were used to produce the deliverables. | Source Geospatial Form: digital data | Type of Source Media: hard drive

Process Steps

Process Step 1

CC ID: 1133184
Description:

Control Process: Photo Science, Inc. established a total of 81 control points that were used to calibrate the LiDAR to known

ground locations established throughout the New York project area to be used in the post processing of the LiDAR data. The points

were located on relatively flat terrain on surfaces that generally consisted of grass, gravel, pavement or bare earth and were in well-

defined discrete locations. Additionally, points collected for Photo Science from various projects located in the region were also

used to adjust the LiDAR data to the final elevation. Surveyed points were used from the Northeast LiDAR and Fire Island, NY

LiDAR projects for United States Geological Survey (USGS). See Final Survey Reports for additional collection parameters and methodologies.

Raw Flight Line Process: Applanix software was used in the post processing of the airborne GPS and inertial data

that is critical to the positioning and orientation of the sensor during all flights. POSPac MMS provides the

smoothed best estimate of trajectory (SBET) that is necessary for Optech's post processor to develop the

point cloud from the LiDAR missions. The point cloud is the mathematical three dimensional collection of all

returns from all laser pulses as determined from the aerial mission. At this point this data is ready for analysis,

classification, and filtering to generate a bare earth surface model in which the above ground features are

removed from the data set. The point cloud was manipulated within the Optech software; GeoCue, TerraScan,

and TerraModeler software was used for the automated data classification, manual cleanup, and bare earth

generation from this data. Project specific macros were used to classify the ground and to remove the side

overlap between parallel flight lines.

All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler.

Classified LAS Process:

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 1 meter 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) were reclassified to the correct classification after the

automated classification was completed.

A class has been added to the dataset to represent the tidal water of the ocean/tidal areas collected

throughout the project area. ASPRS Class 14 is being used to represent the tidal water ocean surface.

While attempts were made to remove all extraneous features above the surface of the water, there may

be above surface features classified to this class. Some islands below the required collection specifications

have been classified to this class as well. This class was also used during the creation of the ERDAS Imagine

Tidal Water Raster DEM files. The Tidal Water breaklines were used to complete the automated classification

of these classes within the final LAS files.

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

Process Step 2

CC ID: 1133185
Description:

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 to Class 17 (USGS Overlap Default) and Class 18 (USGS Overlap Ground).

These classes were created through automated processes only and were not verified for classification accuracy.

Due to software limitations within TerraScan, these classes were used to trip the Withheld bit within various

software packages. These processes were reviewed and accepted by NOAA through numerous conference

calls and pilot study areas.

Data was then run through additional macros to ensure deliverable classification

levels matching the ASPRS LAS Version 1.2 Classification structure. GeoCue functionality was then

used to ensure correct LAS Versioning. In-house software was used as a final

QA/QC check to provide LAS Analysis of the delivered tiles. QA/QC checks were performed on a per tile

level to verify final classification metrics and full LAS header information.

All ground (ASPRS Class 2) LiDAR data inside of the collected inland breaklines were then classified to water (ASPRS Class 9)

using TerraScan macro functionality. A buffer of 1 meter was also used around each hydro flattened

feature. These points were moved from ground (ASPRS Class 2) to Ignored Ground (ASPRS Class 10).

All ground (ASPRS Class 2) LiDAR data inside of the collected tidal/ocean breaklines were then classified to tidal water (USGS Class 14)

using TerraScan macro functionality. A buffer of 1 meter was also used around each hydro flattened

feature. These points were moved from ground (ASPRS Class 2) to Ignored Ground (ASPRS Class 10).

A manual QA review of the tiles was completed using in-house proprietary software to ensure full coverage, correct deliverable

classification within the project area.

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

Process Step 3

CC ID: 1133186
Description:

The NOAA Office for Coastal Management (OCM) received the data in las format. The files contained lidar elevation and intensity measurements.

The data were received in UTM, Zone 18 coordinates and vertically referenced to NAVD88 using the Geoid09 model. The vertical units of the

data were meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. Files were filtered for elevation outliers.

2. Files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid09.

3. Files were converted from UTM, Zone 18 coordinates to geographic (NAD83, NSRS2007) coordinates

4. Classifications were changed from Unclassified (1), Ground (2), Low Point (Noise) (7), Water (9), Breakline Edge (10), Withheld (11), Tidal Water (14),

Overlap Default (17), and Overlap Ground (18), Overlap Water (25), and Overlap Tidal Water (30) to Unclassified (1), Ground (2),

Low Point (Noise) (7), and Water (9).

Process Date/Time: 2012-11-01 00:00:00

Catalog Details

Catalog Item ID: 49888
GUID: gov.noaa.nmfs.inport:49888
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:22+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