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Short Citation:
OCM Partners, 2022: 2010 Federal Emergency Management Agency (FEMA) Topographic Lidar: Coastal Massachusetts and Rhode Island, https://www.fisheries.noaa.gov/inport/item/49841.

Item Identification

Title: 2010 Federal Emergency Management Agency (FEMA) Topographic Lidar: Coastal Massachusetts and Rhode Island
Short Name: ne2010_fema_coastalmari_m2555_metadata
Status: Completed
Publication Date: 2013-09
Abstract:

Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to

create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the

types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the

origins of the flood study elevation data. (Source: FEMA Guidelines and Specifications, Appendix N, Section N.1.2).

Purpose:

Terrain data is used to represent the topography of a watershed and/or floodplain environment and to extract useful information for hydraulic and hydrologic

models. (Source: FEMA Guidelines and Specs, Appendix N) This digital data is produced for the purposes of updating/creating a DFIRM database.

Notes:

10485

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/geoid18/2555/supplemental/ne2010_fema_coastalmari_footprint.KMZ

A vertical accuracy report from the vendor may be viewed here:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2555/supplemental/ne2010_fema_coastalmari_accuracyreport.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 1.2 format (ASPRS Classes 1,2,7,9,10,12)

Entity Attribute Detail Citation:

Appendix M of FEMA Guidelines and Specifications for FEMA Flood Hazard Mapping Partners 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 Aero-Metric, CDM, STARR, FEMA, NOAA, the Office for Coastal Management or its partners.

Data Set Credit: Acknowledgement of FEMA would be appreciated in products derived from these data.

Support Roles

Data Steward

CC ID: 679973
Date Effective From: 2013-09
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: 679975
Date Effective From: 2013-09
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: 679976
Date Effective From: 2013-09
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: 679974
Date Effective From: 2013-09
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: 1134527
W° Bound: -71.466405
E° Bound: -69.956452
N° Bound: 41.892085
S° Bound: 41.236003

Extent Group 1 / Time Frame 1

CC ID: 1134526
Time Frame Type: Range
Start: 2009-11-16
End: 2010-02-04

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=2555

;

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: 741651
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2555
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: 741652
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2555/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 741654
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 741655
URL: https://coast.noaa.gov
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 679995
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 679994
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: 718414
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741653
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Vertical Positional Accuracy:

Vertical testing methods derived from the NSSDA/FEMA guidelines. 131 checkpoints were collected throughout entire project area (including 7 control points).; Quantitative Value: 0.16 meters, Test that produced the value: NSSDA AccuracyZ (RMSEz x 1.9600 = 95% confidence level). Value in meters.

Completeness Report:

Data contained in the Terrain package highlights specific issues in the Elevation datasets. Terrain data are derived datasets that aid automated

hydrologic and hydraulic analyses, the flood hazard area boundary delineations, and quality control.

Conceptual Consistency:

The Terrain data are consistent with the Elevation dataset. A comparison of profile plots with the flow vector data confirms that flow vectors are correctly drawn.

Flood hazard boundaries do not extend beyond the External Boundary, if exists. FIRM panels show the flood hazard area delineations where Island data are present.

Lineage

Process Steps

Process Step 1

CC ID: 1134523
Description:

AERO-METRIC, INC. established accurate LiDAR trajectory coordinates for portions of Dukes, Kent, Nantucket, Newport, and Providence counties flown at

1660 meters above mean terrain. The information allows photogrammetrists to position the LiDAR imagery with minimal ground control and maintain the

standards published by the Federal Geographic Data Committee. In conjunction with the AirBorne Global Positioning and Inertial Measuring System

(ABGPS/IMU), 131 ground control points (checkpoints) were established to validate the accuracy of the LiDAR data. Airborne GPS/IMU surveys were completed

between November 16, 2009 and February 4, 2010 during the acquisition of the LiDAR data. Ground control surveys were completed between November 19 and

December 9, 2009. Airborne GPS/IMU and ground control surveys were completed for the project site, under FEMA Task Order No. HSFE01-09-J-001, Work Order

No. AM 01 01 001 entered into on November 5, 2009 between the STARR and AERO-METRIC, INC.

Process Date/Time: 2010-04-14 00:00:00

Process Step 2

CC ID: 1134524
Description:

The NOAA Office for Coastal Management (OCM) received the topographic files in LAS V1.2 format. The files contained lidar elevation measurements, classifications,

intensity data, return information, GPS time, scan angle and source ID. The data were received in either NAD83 Mass State Plane Island (Zone 2002) coordinates

or NAD83 Rhode Island State Plane (Zone 3800) 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 topographic las files were converted from a Projected Coordinate System (MASS SP 2002/RI SP 3800) to Geographic coordinates (NAD83).

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

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

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

Process Date/Time: 2013-09-01 00:00:00

Catalog Details

Catalog Item ID: 49841
GUID: gov.noaa.nmfs.inport:49841
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