Slide Menu
System Maintenance Notice, Monday, December 5, 2022 @ 1pm-5pm Eastern. The Operations Team will be performing system maintenance. During this scheduled downtime, InPort will not be available.
View All
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2022: 2009 Federal Emergency Management Agency (FEMA) Topographic LiDAR: Fort Kent, Maine, https://www.fisheries.noaa.gov/inport/item/49788.

Item Identification

Title: 2009 Federal Emergency Management Agency (FEMA) Topographic LiDAR: Fort Kent, Maine
Short Name: me2009_fema_fortkent_m2481_metadata
Status: Completed
Publication Date: 2013-04
Abstract:

Camp Dresser McKee Inc. contracted with Sanborn Map Company to provide LiDAR mapping services for Fort Kent, Maine. Utilizing multi-return systems, Light Detection and Ranging (LiDAR) data in the form of 3-dimensional positions

of a dense set of mass points was collected in spring 2009 for 187 square miles along the St. Johns River and the Fish River. The Leica ALS-50 LiDAR system was used to collect data for the survey campaign.

The nominal point spacing of this data set is 1.4 meters.

Leica ALS-50 LiDAR System Acquisition Parameters:

Average Altitude: 1400 Meters above ground level

Airspeed: ~120 Knots

Scan Frequency: 36 Hertz

Scan Width Half Angle: 20 Degrees

Pulse Rate: 76,200 Hertz

Purpose:

LiDAR points used in conjunction with LiDAR derived breaklines to determine a DTM surface.

Notes:

10432

Supplemental Information:

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2481/supplemental/me2009_fema_fortkent_footprint.KMZ

A survey report for this data set may be viewed in PDF format at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2481/supplemental/me2009_fema_fortkent_surveyreport.pdf

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
None Land Surface

Physical Location

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

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: las
Entity Attribute Overview:

LiDAR points in LAS 1.1 format

Entity Attribute Detail Citation:

The Survey Report referenced in the Supplemental_Information section above contains a detailed description of the data themes and references to other relevant information.

Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility

of Camp Dresser McKee Inc, Sanborn Map Company, FEMA, NOAA, the Office for Coastal Management or its partners.

Support Roles

Data Steward

CC ID: 677159
Date Effective From: 2013-04
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: 677161
Date Effective From: 2013-04
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: 677162
Date Effective From: 2013-04
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: 677160
Date Effective From: 2013-04
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: 1133891
W° Bound: -69.156918
E° Bound: -68.32496
N° Bound: 47.376866
S° Bound: 47.019353

Extent Group 1 / Time Frame 1

CC ID: 1133890
Time Frame Type: Discrete
Start: 2009-05-13

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=2481

;

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. These data depict the heights at the time of the survey and are only accurate for that time.

Distribution Information

Distribution 1

CC ID: 741339
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2481
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: 741340
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2481/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 741342
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 741343
URL: https://coast.noaa.gov
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 677180
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 677179
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: 718357
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741341
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Horizontal Positional Accuracy:

Lidar acquired and processed to meet 1m (RMSE) horizontal accuracy.; Quantitative Value: 1.0 meters, Test that produced the value:

Units in meters. Horizontal point accuracy is a function of angular origination of the pulse; IMU orientation; the scanner encoder and ranging function and will vary depending on the proposed point density selected for the collection.

Statistically, the error is roughly 1/3 of the illuminated foot print on the ground and is a function of the beam divergences.

Vertical Positional Accuracy:

The vertical accuracy is based on the Sanborn independent collection of 20 ground survey points distributed throughout the project. The RMSEz of all survey checkpoints tested as .195 ft (6 cm).; Quantitative Value: 0.06 meters, Test that produced the value: Tested RMSEz. Units in meters.

Completeness Report:

A visual qualitative assessment was performed in the source Lidar dataset. Small data voids were noted by NOAA OCM in tiles 1275-16750 and 1225-17000, these voids are over water and should

not impact the quality of the data set.

Conceptual Consistency:

Data covers the tile scheme provided for the area of interest.

Lineage

Process Steps

Process Step 1

CC ID: 1133885
Description:

The ABGPS, IMU, and raw Leica ALS-50 LiDAR data are integrated into the LEICA ALS post processor software. The resultant file is in a LAS binary file format. The LAS file version 1.1 formats can be easily transferred from

one file format to another. It is a binary file format that maintains information specific to the LiDAR data (return#, intensity value, xyz, etc.). The resultant points are produced in the geodetic coordinates referenced

to the NAD83 horizontal datum and GRS80 vertical datum.

Process Date/Time: 2009-05-13 00:00:00

Process Step 2

CC ID: 1133886
Description:

The unedited data are classified to facilitate the application of the appropriate feature extraction filters. A combination of proprietary filters is applied as appropriate for the production of bare earth digital

terrain models (dtms). Interactive editing methods are applied to those areas where it is inappropriate or impossible to use the feature extraction filters, based upon the design criteria and/or limitations of the

relevant filters. These same feature extraction filters are used to produce elevation height surfaces. The LiDAR mass points were delivered in American Society for Photogrammetry and Remote Sensing LAS 1.1 format.

The header file for each dataset is complete as define by the LAS 1.1 specification. The data was classified as follows: Class 1 = Unclassified. This class includes vegetation, buildings, noise etc. Class 2 = Ground.

Process Date/Time: 2009-01-01 00:00:00

Process Step 3

CC ID: 1133887
Description:

Conversion from Geodetic coordinates wgs84 into Maine State Plane East coordinates using NAD83 and conversion from ellipsoid heights (meters) into orthometric heights (U.S. Survey Feet).

Process Date/Time: 2009-01-01 00:00:00

Process Step 4

CC ID: 1133888
Description:

The NOAA Office for Coastal Management (OCM) received the topographic files in .las.gz compressed format. The files were LAS version 1.1. The files contained

lidar elevation measurements. The data were received in NAD83 Maine State Plane 2000 East coordinates coordinates and were vertically referenced to

NAVD88 using the Geoid03 model. The vertical units of the data were feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. The compressed .las.gz files were uncompressed to LASV1.1 format.

2. The topographic las files were converted from a Projected Coordinate System (Maine SP 2000 East) to a Geographic Coordinate system (GCS).

3. The topographic las files' horizontal units were converted from feet to decimal degrees.

4. The topographic las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid03.

5. The topographic las files' vertical units were converted from feet to meters.

Process Date/Time: 2013-04-01 00:00:00

Catalog Details

Catalog Item ID: 49788
GUID: gov.noaa.nmfs.inport:49788
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