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Short Citation:
OCM Partners, 2022: 2009 USGS Lidar DEM: Androscoggin County (ME), https://www.fisheries.noaa.gov/inport/item/52556.

Item Identification

Title: 2009 USGS Lidar DEM: Androscoggin County (ME)
Short Name: me2009_androscoggin_dem_m8524_metadata
Status: Completed
Publication Date: 2013-04
Abstract:

USGS Contract Number: G10PC00026

USGS Task Order: G10PD01737

LiDAR was collected at a 1.0 points per square meter (1.0m GSD) for the county of Androscoggin, Maine while no snow was on the ground and rivers were at

or below normal levels and prior to leaf-on conditions.

In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEMs were created from, are also available. These data are available for custom download at the link provided in the URL section of this metadata record.

Hydro breaklines 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:

One meter point spacing LiDAR data collection provides the information to create Intensity Images, Break Lines, Raster DEMs, and fully Classified LiDAR LAS files.

Notes:

10433

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

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE

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
AIRCRAFT
Global Change Master Directory (GCMD) Platform Keywords
DEM > Digital Elevation Model

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: As Needed
Data Presentation Form: Model (digital)
Entity Attribute Overview:

LAS V1.1

Entity Attribute Detail Citation:

LAS files meet specifications in Project Report

Distribution Liability:

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

of USGS, FEMA, STARR, Photo Science, NOAA, the Office for Coastal Management or its partners.

Data Set Credit: Photo Science, Inc. flew the LiDAR and processed the data.

Support Roles

Data Steward

CC ID: 753142
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: 753144
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: 753145
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: 753143
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: 1151949
W° Bound: -70.405713
E° Bound: -69.986657
N° Bound: 44.493105
S° Bound: 43.90332

Extent Group 1 / Time Frame 1

CC ID: 1151948
Time Frame Type: Range
Start: 2009-11-17
End: 2009-12-02

Spatial Information

Spatial Representation

Representations Used

Vector: No

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for custom and bulk 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. These data depict the heights at the time of the survey and are only accurate for that time.

Distribution Information

Distribution 1

CC ID: 753146
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8524
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: 753147
Download URL: https://coast.noaa.gov/htdata/raster2/elevation/ME_Androscoggin_DEM_2009_8524/
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2013-04 - Present)
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 753148
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 753149
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 3

CC ID: 753332
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/2480/supplemental/me2009_usgs_androscoggin_projectreport.doc
URL Type:
Online Resource
Description:

This lidar report provides accompanying information about the collection and processing of this lidar data set.

URL 4

CC ID: 753333
URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2480
URL Type:
Online Resource
Description:

Link to custom download the lidar point data from which these raster Digital Elevation Model (DEM) data were created.

URL 5

CC ID: 753334
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/2480/breaklines/
Description:

Link to download the breakline data.

URL 6

CC ID: 753335
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/2480/supplemental/me2009_usgs_androscoggin_footprint.KMZ
Name: Browse graphic
URL Type:
Browse Graphic
Description:

This graphic displays the footprint for this lidar data set.

Activity Log

Activity Log 1

CC ID: 753151
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 753150
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: 753152
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 753153
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:

The project area requires LiDAR to be collected on average of 1 meter point spacing or better and vertical accuracy of 18.0 centimeters RMSE or better to support 2' contour generation when combined with breaklines.

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.

The vertical unit of the data file is in meters.

RMSEz = 0.10 meters

Completeness Report:

Datasets contain complete coverage of tiles.

Conceptual Consistency:

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.

Lineage

Process Steps

Process Step 1

CC ID: 1151945
Description:

Leica software was used in the post processing of the airborne GPS and inertial data that is critical to the positioning of the sensor during all flights. This software suite includes Applanix's PosPac and Waypoint's GrafNav solutions. PosPac provides the smoothed best estimate of trajectory (SBET) that is necessary for Leica'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 Leica 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.

Buffered LAS files were created in GeoCue to provide overedge to the DEM creation. These tiles were then run through automated scripting within ArcMap and were combined with the Hydro Flattened Breaklines to create the 2.5 foot DEM. Final DEM tiles were clipped to the tile boundary to provide a seamless dataset.

ERDAS IMG files were then created as the project deliverable.

A manual QA review of the tiles was completed in ArcMap and Global Mapper to ensure full coverage with no gaps or slivers within the project area.

Process Date/Time: 2010-01-01 00:00:00

Process Step 2

CC ID: 1151946
Description:

The NOAA Office for Coastal Management (OCM) received 648 raster files. The data were in Maine State Plane West (NAD83) coordinates and NAVD88 (Geoid03) elevations in feet. The bare earth raster files were at a 2.5 ft grid spacing.

OCM performed the following processing on the data for Digital Coast storage and provisioning purposes:

1. Converted the files from elevation units of feet to meters using GDAL.

2. Copied the files to https.

Process Date/Time: 2018-04-30 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 52556
GUID: gov.noaa.nmfs.inport:52556
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2018-05-04 15:46+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