2008 Northwest Florida Water Management District (NWFWMD) Lidar: Eglin Air Force Base, Walton County, FL
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:49876 | Updated: August 9, 2022 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2008 Northwest Florida Water Management District (NWFWMD) Lidar: Eglin Air Force Base, Walton County, FL, https://www.fisheries.noaa.gov/inport/item/49876.
Full Citation Examples
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
Distribution Information
-
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
-
Simple download of data files.
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent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.
Controlled Theme Keywords
elevation
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
Extents
-86.323522° W,
-86.114148° E,
30.605467° N,
30.495943° S
2008-06-15
Item Identification
| Title: | 2008 Northwest Florida Water Management District (NWFWMD) Lidar: Eglin Air Force Base, Walton County, FL |
|---|---|
| Short Name: | nwfwmd2008_walton_eglin_m574_metadata |
| Status: | Completed |
| Publication Date: | 2008-08 |
| Abstract: |
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 |
| Purpose: |
To supplement previously collected lidar data in the creation of county-wide, high resolution, lidar derived digital elevation models (DEM). |
| Notes: |
10520 |
| 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. 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 |
Keywords
Theme Keywords
| Thesaurus | Keyword |
|---|---|
| ISO 19115 Topic Category |
elevation
|
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 NOAA,the Office for Coastal Management or its partners. |
Support Roles
Data Steward
| 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: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Distributor
| 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: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Metadata Contact
| 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: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Point of Contact
| 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: | 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
| W° Bound: | -86.323522 | |
|---|---|---|
| E° Bound: | -86.114148 | |
| N° Bound: | 30.605467 | |
| S° Bound: | 30.495943 |
Extent Group 1 / Time Frame 1
| Time Frame Type: | Discrete |
|---|---|
| Start: | 2008-06-15 |
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 The data set is dynamically generated based on user-specified parameters. ; |
| 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
| Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=574 |
|---|---|
| Distributor: | |
| File Name: | Customized Download |
| Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
Distribution 2
| Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/574/index.html |
|---|---|
| Distributor: | |
| File Name: | Bulk Download |
| Description: |
Simple download of data files. |
URLs
URL 1
| URL: | https://coast.noaa.gov/dataviewer |
|---|---|
| URL Type: |
Online Resource
|
URL 2
| URL: | https://coast.noaa.gov |
|---|---|
| URL Type: |
Online Resource
|
Activity Log
Activity Log 1
| Activity Date/Time: | 2016-05-23 |
|---|---|
| Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
| Activity Date/Time: | 2017-11-14 |
|---|---|
| Description: |
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. |
Activity Log 3
| Activity Date/Time: | 2018-02-08 |
|---|---|
| Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
| 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: |
Contracted to meet 1 meter (RMSE) horzontal accuracy |
|---|---|
| Vertical Positional 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. |
| Completeness Report: |
A visual qualitative assessment was performed in the source lidar dataset. |
| Conceptual Consistency: |
Data covers the tile scheme provided for the Eglin Airforce Base and partially covers the tiling scheme provided for the county. |
Lineage
Sources
LiDAR
| Publish Date: | 2009-01-01 |
|---|---|
| Extent Type: | Discrete |
| Extent Start Date/Time: | 2006-07 |
| Source Contribution: |
unknown | Source Geospatial Form: vector digital data | Type of Source Media: Unknown |
Process Steps
Process Step 1
| Description: |
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. |
|---|---|
| Process Date/Time: | 2008-06-15 00:00:00 |
Process Step 2
| Description: |
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 |
|---|---|
| Process Date/Time: | 2008-01-01 00:00:00 |
Process Step 3
| Description: |
Conversion from Geodetic coordinates, NAD83 into State Plane coordinates (meters) and conversion from ellipsoid heights (meters) into orthometric heights (U.S. Survey Feet). |
|---|---|
| Process Date/Time: | 2008-01-01 00:00:00 |
Process Step 4
| 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 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. |
|---|---|
| Process Date/Time: | 2011-03-31 00:00:00 |
Catalog Details
| Catalog Item ID: | 49876 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:49876 |
| 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 |