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Short Citation:
OCM Partners, 2023: 2007 Federal Emergency Management Agency (FEMA) New York Lidar: Niagara County,

Item Identification

Title: 2007 Federal Emergency Management Agency (FEMA) New York Lidar: Niagara County
Short Name: ny2007_niagara_m112_metadata
Status: Completed
Publication Date: 2008-08

The spring 2007 LiDAR Flight Acquisition required the collection of approximately 526 square miles of Niagara County

and approximately 30 square miles of the corridors of Erie County. Total, approximately 555 square miles were collected

at a nominal point spacing of 1.4 meters and based on the Sanborn FEMA compliant LiDAR product specification.

The lidar data was collected from Jan 3 2007-May 9 2007. Multiple returns were recorded for each laser

pulse along with an intensity value for each return. The lidar points in this data set are the last return data, it is not a

bare earth data set and the points have not been classified.

LIDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform.

Using a combination of laser range finding, GPS positioning and inertial measurement technologies; LIDAR instruments

are able to make highly detailed Digital Elevation Models (DEM) of the earth's terrain, man-made structures and vegetation.

This data was collected at a resolution to aid in coastal management decisions including flood plain analysis and mapping.

Original contact information:

Contact Name: Jamie Young

Contact Org: Sanborn Mapping Company, Inc.

Title: General Manager

Phone: (719) 264-5602



LIDAR data is used for 3D visualization, elevation based analysis and for feature extraction.



Supplemental Information:

Reflective surface data represents the DEM created by laser energy reflected from the first

surface encountered by the laser pulse. Some energy may continue beyond this initial surface to be reflected by a

subsequent surface as represented by the Last Return data. Intensity information is captured from the Reflective

Surface pulse and indicates the relative energy returned to the sensor as compared to the energy transmitted. The

Intensity image is not calibrated or normalized but indicates differences in energy absorption due to the interaction

of the surface materials with laser energy at the wavelength transmitted by the sensor.

For more information about this data, please refer to the Final Report for Erie County Corridors & Niagara County at:


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category

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 the

Federal Emergency Management Agency (FEMA), Sanborn Map Company, Inc, Medina Consultants, the Office for Coastal Management or its partners.

Data Set Credit: Acknowledgement of the Federal Emergency Management Agency (FEMA), Sanborn Map Company, Inc, and Medina Consultants would be appreciated in products derived from these data.

Support Roles

Data Steward

CC ID: 681744
Date Effective From: 2008-08
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


CC ID: 681746
Date Effective From: 2008-08
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Metadata Contact

CC ID: 681747
Date Effective From: 2008-08
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Point of Contact

CC ID: 681745
Date Effective From: 2008-08
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1132589
W° Bound: -79.109826
E° Bound: -78.411653
N° Bound: 43.391887
S° Bound: 42.999853

Extent Group 1 / Time Frame 1

CC ID: 1132588
Time Frame Type: Range
Start: 2007-01-03
End: 2007-05-09

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:

The data set is dynamically generated based on user-specified parameters.


Data Access Constraints:


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: 741872
Download URL:
File Name: Customized Download

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

Distribution 2

CC ID: 741873
Download URL:
File Name: Bulk Download

Simple download of data files.



CC ID: 741875
URL Type:
Online Resource


CC ID: 741876
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 681764
Activity Date/Time: 2016-05-23

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 681763
Activity Date/Time: 2017-11-14

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

Activity Log 3

CC ID: 718462
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 741874
Activity Date/Time: 2018-03-13

Partial upload to move data access links to Distribution Info.

Technical Environment


Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog

Data Quality

Horizontal Positional Accuracy:

Contracted to meet 1 meter (RMSE) horizontal accuracy.

Vertical Positional Accuracy:

Data tested to have vertical accuracy of 10.9 cm RMSE.

Completeness Report:

LIDAR raster data is visually inspected for completeness to ensure that any gaps between flight lines

or loss of signal represents less than 5% of required collection area. LIDAR is self-illuminating and has minimal cloud

penetration capability. Water vapor in steam plumes or particulates in smoke may cause reflection of LIDAR signals and

loss of elevation information beneath these plumes. Glass structures and roofs may appear transparent to the LIDAR signal

and therefore may not register on the reflective surface. Some asphalt formulations have been shown to absorb topographic

LIDAR wavelength energy resulting in "pitting" of roof surfaces using this material.

Conceptual Consistency:

All LAS formatted LIDAR data are validated using commercial GIS software to ensure proper

formatting and loading before delivery. This validation procedure ensures that data on delivery media is in correct

physical format and is readable.




CC ID: 1132584
Publish Date: 2008-01-01
Extent Type: Discrete
Extent Start Date/Time: 2008
Source Contribution:

Raw spatial elevation information | Type of Source Media: Hard drive

Process Steps

Process Step 1

CC ID: 1132585

1. Fly lidar with Optech 2050 at nominal 1.4 m point spacing.

2. Process Airborne GPS using the GrafNAV V7.50 software by Waypoint Consulting of Calgary, Alberta, Canada.

3. Process IMU data using the PosPac V4.2 software by Applanix Corporation of Richmond Hill, Ontario, Canada.

4. Reflective Surface Generation using the ASL Post Processor software by Leica Geosystems software of Terrasolid

Limited of Helsinki, Finland.

Process Date/Time: 2007-01-01 00:00:00

Process Step 2

CC ID: 1132586

The NOAA Office for Coastal Management (OCM) received the files in ASCII format. The files contained Lidar

elevation and intensity measurements. The data were in State Plane New York West, FIPS 3103 coordinates, horizontal

units of measure of US survey feet and in NAVD88 Geoid 03 vertical datum with vertical units of measure of feet.

OCM performed the following processing to the data to make it available within the Digital Coast:

1. The data were converted from NY State Plane coordinates to geographic coordinates.

2. The data were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using Geoid 03.

3. The LAS data were sorted by latitude and the headers were updated.

4. The data were filtered to remove outliers.

Process Date/Time: 2009-03-25 00:00:00

Catalog Details

Catalog Item ID: 49882
GUID: gov.noaa.nmfs.inport:49882
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