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Short Citation:
OCM Partners, 2022: 2007 Delaware Coastal Programs Lidar: Kent and New Castle Counties, https://www.fisheries.noaa.gov/inport/item/49660.

Item Identification

Title: 2007 Delaware Coastal Programs Lidar: Kent and New Castle Counties
Short Name: de2007_kent_newcastle_m109_metadata
Status: Completed
Publication Date: 2008
Abstract:

The data acquisition occurred in 7 missions between March 31 and April 5, 2007 in Kent and New Castle Counties, Delaware.

The data have been classified and were flown to derive bare earth contours at 2 feet. Multiple returns were recorded for each laser

pulse along with an intensity value for each return. The points have a 1.4 m ground spacing (1.0 m ground spacing within the Wilmington

Urban Area).

Original contact information:

Contact Name: George Halley

Contact Org: Sanborn Map Company, Inc.

Title: Project Manager

Phone: 719-264-5503

Email: ghalley@sanborn.com

Purpose:

This LIDAR operation was designed to provide a high density set of masspoints within the defined areas. The data sets are

suitable for the development of contours for use in hydraulic/hydrologic model development, and for assessing environmental impacts.

Typical uses for the data set include: FEMA Flood Plain Map Modernization, DFIRM map updates, watersheds and other hydro studies per

FEMA specifications, county mapping projects which include several uses, in addition to flood mitigation assessment, mapping projects

that include accuracy verification, reporting and metadata.

Notes:

10304

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
None Drainage Area
None Hydraulic
None Hydrographic
None Hydrology

Physical Location

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

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Distribution Liability:

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

Data Set Credit: We request that you credit the Sanborn Mapping Company when you use these data in a report, publication, or presentation.

Support Roles

Data Steward

CC ID: 671695
Date Effective From: 2008
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: 671697
Date Effective From: 2008
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: 671698
Date Effective From: 2008
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: 671696
Date Effective From: 2008
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: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1132503
W° Bound: -75.807426
E° Bound: -75.293106
N° Bound: 39.843937
S° Bound: 38.817498

Extent Group 1 / Time Frame 1

CC ID: 1132502
Time Frame Type: Range
Start: 2007-03-31
End: 2007-04-05

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;

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.

Distribution Information

Distribution 1

CC ID: 740607
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=109
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: 740608
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/109/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 740610
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 740611
URL: https://coast.noaa.gov
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 671720
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 671719
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: 718208
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 740609
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420

Data Quality

Horizontal Positional Accuracy:

FEMA LiDAR Specifications

Vertical Positional Accuracy:

FEMA LiDAR Specifications; +/- 18.5 cm for well defined points and FEMA LiDAR Specifications;

+/- 37 cm for points in heavily vegetated areas.

Completeness Report:

None

Conceptual Consistency:

None

Lineage

Sources

2007 Delaware Coastal Program Lidar: Kent and New Castle Counties

CC ID: 1132493
Publish Date: 2008-01-01
Extent Type: Range
Extent Start Date/Time: 2007-03-31
Extent End Date/Time: 2007-04-05
Source Contribution:

Unknown | Type of Source Media: Hard drive

Process Steps

Process Step 1

CC ID: 1132494
Description:

Data Collection:

Using a Leica Systems ALS50 Light Detection and Ranging (LiDAR) system, flight lines of standard density ground spacing of 1.4 meter and

1.0 meter (within the Wilmington Urban Area) data were collected over areas in Kent County, DE (approximately 800 square miles) and New

Castle County, DE. Multiple returns were recorded for each laser pulse along with an intensity value for each return.

The data acquisition occurred in 7 missions between March 31, 2007 and April 5, 2007. During the LIDAR campaign, the Sanborn field crew

conducted a GPS field survey to establish final coordinates of the ground base stations for final processing of the base-remote

GPS solutions.

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

Process Step 2

CC ID: 1132495
Description:

Airborne GPS Processing:

Airborne GPS data were differentially processed and integrated with the post processed IMU data to derive a smoothed best estimate

of trajectory (SBET). The SBET was used to reduce the LiDAR slant range measurements to a raw reflective surface for each flight line.

The overlap between flight lines was removed to provide a homogeneous coverage, and the coverage was classified to extract a bare

earth digital elevation model (DEM).

Airborne GPS is differentially processed using the GrafNAV V7.50 software by Waypoint Consulting of Calgary, Alberta, Canada.

The PDOP and distance separation are as follows:

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

The reflective surface is derived using the ALS Post Processor software by Leica Geosystems GIS & Mapping Division of Atlanta, Georgia.

The classification and quality control (QC) of LiDAR data is carried out using TerraScan software by Terrasolid Limited of Helsinki, Finland.

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

Process Step 3

CC ID: 1132496
Description:

IMU data Processing:

IMU data provides information concerning roll, pitch and yaw of collection platform during collection event. IMU information allows

the pulse vector to be properly placed in 3D space allowing the distance from the aircraft reference point to be properly positioned

on the elevation model surface. IMU data is processed using the PosPac V4.2 software by Applanix Corporation of Richmond Hill, Ontario,

Canada.

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

Process Step 4

CC ID: 1132497
Description:

Reflective Surface Generation:

The reflective surface is derived using the ALS Post Processor software by Leica Geosystems GIS & Mapping Division of Atlanta, Georgia.

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

Process Step 5

CC ID: 1132498
Description:

LIDAR Point Classification

The classification and quality control (QC) of LiDAR data is carried out using TerraScan software by Terrasolid Limited of Helsinki,

Finland.

Process Date/Time: 2008-01-01 00:00:00

Process Step 6

CC ID: 1132499
Description:

Output LAS Files

The product output of LiDAR data is carried out using TerraScan software by Terrasolid Limited of Helsinki, Finland. LAS Binary and

ArcGIS shapefiles were created. The shapefiles represented the bare earth product. All data were tiles to be consistent with the

statewide orthoimagery tile layout. Two sets of data were provided -- one in ft (vertical) and the other in meters (vertical).

Both had meters horizontal units.

Process Date/Time: 2008-01-01 00:00:00

Process Step 7

CC ID: 1132500
Description:

The NOAA Office for Coastal Management (OCM) received files in LAS format. The files contained LiDAR intensity

and elevation measurements. OCM performed the following processing on the data to make it available within the Digital

Coast:

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

2. The data were converted from orthometric to ellipsoid heights using Geoid03.

3. The LAS header fields were sorted by latitude and updated.

4. The data were filtered to eliminate outliers.

Process Date/Time: 2009-03-27 00:00:00

Catalog Details

Catalog Item ID: 49660
GUID: gov.noaa.nmfs.inport:49660
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:21+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