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Short Citation:
OCM Partners, 2022: 2001 SRWMD BE Lidar: Alachua County (FL), https://www.fisheries.noaa.gov/inport/item/49680.

Item Identification

Title: 2001 SRWMD BE Lidar: Alachua County (FL)
Short Name: fl2001_srwmd_alachua_m4896_metadata
Status: Completed
Publication Date: 2015-07
Abstract:

This is a point dataset of elevations over the NE quadrant of the Mikesville quadrangle, Florida. The data were derived from LIDAR measurements performed in 2001. The data are 'edited' to the extent that they have been reduced to a 'bare ground' representation; most above ground level features and objects such as buildings and trees have been removed from these data.

Delivered points as unclassified bare-earth processed points. NOAA OCM reclassed all points to the Ground class

Purpose:

These data are used for the production of Triangulated Irregular Network (TIN) digital elevation models or whenever a direct representation of the bare-earth LIDAR point data is needed.

Notes:

10324

Supplemental Information:

A footprint of this data set may be viewed in Google Earth at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4896/supplemental/fl2001_srwmd_alachua_m4896.kmz

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
None Ground
None Terrain

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2001
None March

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
Data Presentation Form: las
Entity Attribute Overview:

LAS 1.2 format (class 2)

Entity Attribute Detail Citation:

none

Distribution Liability:

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

Support Roles

Data Steward

CC ID: 672353
Date Effective From: 2015-07
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: 672355
Date Effective From: 2015-07
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: 672356
Date Effective From: 2015-07
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: 672354
Date Effective From: 2015-07
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: Approximate date of LIDAR survey used to build the source data for this data set

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1136935
W° Bound: -82.5626
E° Bound: -82.5
N° Bound: 30
S° Bound: 29.9375

Extent Group 1 / Time Frame 1

CC ID: 1136934
Time Frame Type: Discrete
Start: 2001-03

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/#/lidar/search/where:ID=4896

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. These data depict the heights at the time of the survey and are only accurate for that time.

Distribution Information

Distribution 1

CC ID: 740711
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4896/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 740713
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 2

CC ID: 740714
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4896/supplemental/fl2001_srwmd_alachua_m4896.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar coverage for the 2001 lidar project covering Alachua county in Florida.

Activity Log

Activity Log 1

CC ID: 672375
Activity Date/Time: 2016-10-25
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 672374
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: 718229
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 740712
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Data Quality

Accuracy:

The Fundamental Vertical Accuracy (FVA) of the Classified Bare Earth files for the project area achieved an RMSE of 0.057 meters. One-hundred and Five (105) 'open terrain' survey control points were used in this evaluation, with an additional 20 'open terrain' points held in reserve and supplied to the client.

Horizontal Positional Accuracy:

Data products collected were acquired at manufacturers system specifications, with a nominal point spacing of 0.68 meters.; Quantitative Value: 0.30 meters, Test that produced the value: Acquired at or below 1500 meters above mean terrain (AMT) and have a horizontal accuracy of 0.30 meters (per manufacturers system specifications)

Vertical Positional Accuracy:

The Fundamental Vertical Accuracy (FVA) of the Classified Bare Earth for all Areas achieved is 0.057 meters at a 95% confidence level in the "Open Terrain" land cover category. One-hundred and Five (105) survey control points were used in this evaluation.; Quantitative Value: 0.057 meters, Test that produced the value: FVA of the classified bare-earth points

Completeness Measure:

Cloud Cover: 0

Completeness Report:

Complete

Conceptual Consistency:

None

Lineage

Process Steps

Process Step 1

CC ID: 1136923
Description:

Finalized airborne trajectory utilizing base-data provided by GPS INC using Leica IPAS-TC v 3.1.

Process Date/Time: 2012-06-14 00:00:00

Process Step 2

CC ID: 1136925
Description:

Integrate trajectory and raw laser data to produce point cloud data in LAS 1.2 format for each flight line.

Process Date/Time: 2012-06-14 00:00:00

Process Step 3

CC ID: 1136926
Description:

Compute the roll, pitch, heading, and mirror scale correction factors for each flight line, then apply corrections to the corresponding flight line.

Process Date/Time: 2012-06-20 00:00:00

Process Step 4

CC ID: 1136927
Description:

Automated classification of the bare-earth data from the lidar point cloud using a series of algorithms customized for the types of terrain encountered in the project.

Process Date/Time: 2012-06-25 00:00:00

Process Step 5

CC ID: 1136928
Description:

Manual classification of any data which appears to be bare-earth but was not properly classified using the automated methods. Manual classification of powerline features. Automated classification of building features using TerraScan building classifier, manual cleanup of building points.

Process Date/Time: 2012-07-30 00:00:00

Process Step 6

CC ID: 1136929
Description:

Lidar data verified using GPS control points located throughout the project on open surfaces.

Process Date/Time: 2012-07-31 00:00:00

Process Step 7

CC ID: 1136930
Description:

Output tiled LAS 1.2 data for delivery.

Process Date/Time: 2012-08-10 00:00:00

Process Step 8

CC ID: 1136931
Description:

Convert Timestamps to Adjusted GPS Time using proprietary in-house software.

Process Date/Time: 2012-08-14 00:00:00

Process Step 9

CC ID: 1136932
Description:

Inserted georeference tags in LAS headers using proprietary in-house software.

Process Date/Time: 2012-08-14 00:00:00

Process Step 10

CC ID: 1136924
Description:

The NOAA Office for Coastal Management (OCM) received a HDD from the Suwannee River Water Management District office with relevant lidar data per project. The files contained lidar elevation and intensity measurements. The data were in State Plane Zone 903, NAVD88 (orthometric) heights in feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. The data were converted from UTM coordinates to geographic coordinates.

2. The data were converted from NAVD88 (orthometric) heights in feet to GRS80 (ellipsoid) heights in meters using Geoid 09. Assumptions were made that the data is referenced to Geoid 09 based on the other SRWMD projects delivered having been reprocessing to a more up-to-date geoid model than was available at the time of collection.

3. The LAS data were sorted by latitude and the headers were updated.

4. Duplicate points and erroneous elevations were removed.

Process Date/Time: 2015-07-09 00:00:00

Catalog Details

Catalog Item ID: 49680
GUID: gov.noaa.nmfs.inport:49680
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