2004 St. Johns County, Florida Lidar
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:49682 | Updated: October 30, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2004 St. Johns County, Florida Lidar, https://www.fisheries.noaa.gov/inport/item/49682.
Full Citation Examples
This dataset is the bare earth lidar data for St. Johns County, Florida, acquired in early January and February of 2004. This data was collected to develop comprehensive countywide base mapping and perform other GIS enhancements to support master drainage planning, transportation planning, preliminary engineering and wetland preservation studies. The surveyed area included all of St. Johns County, approximately 610 square miles. Eighty-seven (87) flight lines of high density lidar data (average GSD is 3.3 feet) were obtained at an altitude of 3000 feet AGL. This data set contains only model keypoints (points that are a thinned data set that is intended to remove extraneous data such as trees and points that are deemed redundant to the final bare earth product) that are classified as ground points. As a result, there are a lower number of points than in a full mass point lidar data set; and it is recommended that the data be downloaded as points and used with a TIN (Triangulated Irregular Network) or similar algorithm to produce a bare earth surface.
This data was collected on the 1990 realization of NAD83. However, there is no EPSG code for that realization and the data have been tagged with the 1996 realization.
Original contact information:
Contact Name: Mike Campbell
Contact Org: St. Johns County Florida GIS
Title: St. Johns County GIS Manager
Phone: 904-209-0778
Email: gis@sjcfl.us
Distribution Information
-
Not Applicable
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
-
LAS/LAZ - LASer
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data may no longer represent actual surface conditions.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
-81.669173° W,
-81.212673° E,
30.259696° N,
29.621896° S
2004-01-17 - 2004-02-07
Item Identification
| Title: | 2004 St. Johns County, Florida Lidar |
|---|---|
| Short Name: | fl2004_stjohns_m100_metadata |
| Status: | Completed |
| Publication Date: | 2008 |
| Abstract: |
This dataset is the bare earth lidar data for St. Johns County, Florida, acquired in early January and February of 2004. This data was collected to develop comprehensive countywide base mapping and perform other GIS enhancements to support master drainage planning, transportation planning, preliminary engineering and wetland preservation studies. The surveyed area included all of St. Johns County, approximately 610 square miles. Eighty-seven (87) flight lines of high density lidar data (average GSD is 3.3 feet) were obtained at an altitude of 3000 feet AGL. This data set contains only model keypoints (points that are a thinned data set that is intended to remove extraneous data such as trees and points that are deemed redundant to the final bare earth product) that are classified as ground points. As a result, there are a lower number of points than in a full mass point lidar data set; and it is recommended that the data be downloaded as points and used with a TIN (Triangulated Irregular Network) or similar algorithm to produce a bare earth surface. This data was collected on the 1990 realization of NAD83. However, there is no EPSG code for that realization and the data have been tagged with the 1996 realization. Original contact information: Contact Name: Mike Campbell Contact Org: St. Johns County Florida GIS Title: St. Johns County GIS Manager Phone: 904-209-0778 Email: gis@sjcfl.us |
| Purpose: |
The purpose of this topographic lidar survey was to produce a digital terrain model (DTM) of sufficient density and accuracy to generate 1-foot contours, compile limited planimetric features and generate panchromatic (black and white) digital orthophoto imagery (DOI). |
| Notes: |
10326 |
| Supplemental Information: |
The Minimum Technical Standard Report for St. Johns County, FL may be viewed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/100/supplemental/2004_MTS_Final_Report_stjohns.pdf |
Keywords
Theme Keywords
| Thesaurus | Keyword |
|---|---|
| ISO 19115 Topic Category |
elevation
|
| UNCONTROLLED | |
| None | Surface |
| None | Terrain |
Physical Location
| Organization: | Office for Coastal Management |
|---|---|
| City: | Charleston |
| State/Province: | SC |
Data Set Information
| Data Set Scope Code: | Data Set |
|---|---|
| Maintenance Frequency: | As Needed |
| Distribution Liability: |
Any conclusions drawn for the analysis of this information are not the responsibility of the St. Johns County Public Works Department, the Office for Coastal Management, or its partners. |
| Data Set Credit: | Acknowledgement of the St. Johns County Public Works Department would be appreciated in products derived from these data. |
Support Roles
Data Steward
| Date Effective From: | 2004 |
|---|---|
| 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: | 2004 |
|---|---|
| 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: | 2004 |
|---|---|
| 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: | 2004 |
|---|---|
| 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
| W° Bound: | -81.669173 | |
|---|---|---|
| E° Bound: | -81.212673 | |
| N° Bound: | 30.259696 | |
| S° Bound: | 29.621896 |
Extent Group 1 / Time Frame 1
| Time Frame Type: | Range |
|---|---|
| Start: | 2004-01-17 |
| End: | 2004-02-07 |
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
| Start Date: | 2006 |
|---|---|
| End Date: | Present |
| Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=100 |
| Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2004 - Present) |
| File Name: | Customized Download |
| Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
| Distribution Format: | Not Applicable |
Distribution 2
| Start Date: | 2006 |
|---|---|
| End Date: | Present |
| Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/100/index.html |
| Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2004 - Present) |
| File Name: | Bulk Download |
| Description: |
Simple download of data files. |
| Distribution Format: | LAS/LAZ - LASer |
URLs
URL 1
| URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/100/supplemental/2004_MTS_Final_Report_stjohns.pdf |
|---|---|
| Name: | Data Report |
| URL Type: |
Online Resource
|
| File Resource Format: | |
| Description: |
Data report from the lidar contractor. |
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 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
| 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. |
Data Quality
| Horizontal Positional Accuracy: |
Compiled to 1" to 100' scale |
|---|---|
| Vertical Positional Accuracy: |
Based on the DTM Accuracy Analysis, the vertical accuracy of the DTM/TIN is 9.75 cm (0.32 feet) RMSE at the 1 sigma level (+/- 19.2 cm (0.63 feet) at the 95% confidence level) for unobscured points. |
| Completeness Report: |
Not provided |
| Conceptual Consistency: |
Not provided |
Lineage
Sources
2004 St. Johns County, Florida Lidar
| Publish Date: | 2004-01-01 |
|---|---|
| Extent Type: | Range |
| Extent Start Date/Time: | 2004-01-17 |
| Extent End Date/Time: | 2004-02-07 |
| Source Contribution: |
Unknown | Source Geospatial Form: Model | Type of Source Media: External hard drive |
Process Steps
Process Step 1
| Description: |
The LiDAR data was acquired in 93 flight lines acquired in 6 sessions between January 17 and February 7, 2004 from an altitude of 3,000 feet above ground level (AGL) to provide an average ground sample distance (GSD) of 3.3 feet. Three concurrent airborne GPS base stations were used for each acquisition session. The ABGPS data were reduced using the GrafNav software package by Waypoint Consulting, Inc. The IMU data was reduced using the PosProc software package by Applanix Corporation. The initial lidar "point cloud" was derived through the ALS Post Processor software package by Leica Geosystems. The aircraft, lidar system and associated computer hardware and software are owned and operated by Woolpert LLP. Once the initial lidar "point cloud" was derived, Woolpert performed QC to look for any systematic error within the lidar flights using proprietary software. After systematic error was identified and removed, the individual lidar flights were clipped to remove overlap between adjacent flight lines and provide a homogeneous coverage over the project extents. Using the homogeneous coverage, above ground features were classified and removed using proprietary software to produce the bare-earth coverage. |
|---|---|
| Process Date/Time: | 2004-01-01 00:00:00 |
Process Step 2
| Description: |
The NOAA Office for Coastal Management (OCM) received the files in ASCII format. The data was in Florida State Plane Projection, NAVD88 vertical datum and the vertical units of measure were feet. OCM performed the following processing to the data to make it available within Digital Coast: 1. The data were converted from Florida State Plane East, Zone 0901 coordinates to geographic coordinates. 2. The data were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using Geoid 03. 3. The vertical unit of measure for the data was converted from feet to meters. |
|---|---|
| Process Date/Time: | 2008-11-03 00:00:00 |
| Process Contact: | NOAA Office for Coastal Management (NOAA/OCM) |
| Phone (Voice): | (843) 740-1202 |
| Email Address: | coastal.info@noaa.gov |
| Source: | 2004 St. Johns County, Florida Lidar |
Process Step 3
| Description: |
Data were converted to Cloud Optimized Point Cloud format to facilitate streaming . |
|---|---|
| Process Date/Time: | 2023-10-30 00:00:00 |
| Process Contact: | NOAA Office for Coastal Management (NOAA/OCM) |
| Phone (Voice): | (843) 740-1202 |
| Email Address: | coastal.info@noaa.gov |
Catalog Details
| Catalog Item ID: | 49682 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:49682 |
| Metadata Record Created By: | Anne Ball |
| Metadata Record Created: | 2017-11-15 15:21+0000 |
| Metadata Record Last Modified By: | Kirk Waters |
| Metadata Record Last Modified: | 2023-10-30 14:32+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 |