49876
2008 Northwest Florida Water Management District (NWFWMD) Lidar: Eglin Air Force Base, Walton County, FL
nwfwmd2008_walton_eglin_m574_metadata
Data Set
Published / External
49401
Lidar - partner (no harvest)
Project
Completed
2008-08
In the summer of 2008, the Northwest Florida Water Management District collected lidar data over a portion of Walton County, FL (Eglin Air force Base)
to support various projects such as floodplain and hazards mapping, wetlands mitigation and stormwater management. The data collection occured in a
portion of the county for which there is no prior collected lidar data. Used in conjunction with previously collected data in Walton County
(FDEM Lidar collected in 2006), these data support the creation of a county-wide, high resolution, lidar derived digital elevation model(DEM).
Original contact information:
Contact Name: John B. Crowe
Contact Org: Northwest Florida Water Management District
Title: Associate Hydrologist
Phone: (850) 539-5999
Email: John.Crowe@nwfwmd.state.fl.us
To supplement previously collected lidar data in the creation of county-wide, high resolution, lidar derived digital elevation models (DEM).
10520
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. Points are classified as water, bare ground or not bare ground to support
creation of a bare earth model from the data.
A footprint of this data set may be viewed in Google Earth at:
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/574/supplemental/2008_NWFWMD_Lidar_WaltonCounty_EglinAFB.kmz
Theme
ISO 19115 Topic Category
elevation
Office for Coastal Management
Charleston
SC
Data Set
Unknown
Any conclusions drawn from the analysis of this information are not the responsibility of NOAA,the Office for Coastal Management
or its partners.
Data Steward
2008-08
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2008-08
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2008-08
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2008-08
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-86.323522
-86.114148
30.605467
30.495943
Discrete
2008-06-15
Yes
Unclassified
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer
The data set is dynamically generated based on user-specified parameters.
;
None
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.
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=574
Customized Download
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/574/index.html
Bulk Download
Simple download of data files.
https://coast.noaa.gov
Online Resource
https://coast.noaa.gov/dataviewer
Online Resource
2016-05-23
Date that the source FGDC record was last modified.
2017-11-14
Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.
2018-02-08
Partial upload of Positional Accuracy fields only.
2018-03-13
Partial upload to move data access links to Distribution Info.
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420
Contracted to meet 1 meter (RMSE) horzontal accuracy
LiDAR data accuracy determination shall employ the National Standard for Spatial Data Accuracy (NSSDA).
Contracted to meet 15cm (RMSE) on open bare terrain if errors are normally distributed.
A visual qualitative assessment was performed in the source lidar dataset.
Data covers the tile scheme provided for the Eglin Airforce Base and partially covers the tiling scheme provided for the county.
LiDAR
2009-01-01
Discrete
2006-07
unknown | Source Geospatial Form: vector digital data | Type of Source Media: Unknown
1
The ABGPS, IMU, and raw Optech 3100 LiDAR data are integrated into the TerraScan 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. The date and time for each flight line can be determined using
the Julian date and time. The Julian date is a continuous count of days and fractions since noon Universal Time on January 1, 4713 BCE on the
Julian calendar.
2008-06-15T00:00:00
2
The unedited data are classified to facilitate the application of the appropriate feature extraction filters. A combination of proprietary
filters are 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. In addition the following fields are included: Flight Date Julian, Year, and Class. The LAS files do not include overlap. The
data was classified as follows:
Class 1 = Unclassified. This class includes vegetation, buildings, noise etc.
Class 2 = Ground Class
9 = Water
2008-01-01T00:00:00
3
Conversion from Geodetic coordinates, NAD83 into State Plane coordinates (meters) and conversion from ellipsoid heights (meters) into
orthometric heights (U.S. Survey Feet).
2008-01-01T00:00:00
4
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 for data storage purposes and Digital Coast provisioning:
1. The data were converted from State Plane Florida West coordinates to geographic (NAD83) coordinates.;
2. the data were filtered to remove elevation outliers.;
3. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03.;
4. The LAS header fields were sorted by latitude and updated.
2011-03-31T00:00:00
gov.noaa.nmfs.inport:49876
Anne Ball
2017-11-15T15:22:54
SysAdmin InPortAdmin
2022-08-09T17:11:37
2022-03-16
OCM Partners
OCMP
1002
Public
No
2022-03-16
1 Year
2023-03-16