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Short Citation:
OCM Partners, 2023: 2011 SWFWMD Topographic Lidar: Pasco County,

Item Identification

Title: 2011 SWFWMD Topographic Lidar: Pasco County
Short Name: fl2011_swfwmd_pasco_m4697_metadata
Status: Completed
Publication Date: 2011-12-15

SWFWMD regularly uses digital topographic information to support regulatory, land management and acquisition, planning, engineering and habitat restoration projects. LiDAR data will support hydrologic modeling activities associated with the FederalEmergency Management Agency (FEMA), and in the creation of Digital Flood Insurance Rate Maps(DFIRM). The LiDAR data will support the creation of Federal Emergency Management AgencyFlood Insurance Rate Maps (FEMA FIRM) and an integrated ground and surface water model for Pasco County. The data were classified into 7 classifications; (1) unclassified, (2) ground, (6) buildings, (9) water, (11) wetlands, (23) bridges, (30) ground within 10 ft of a breakline, and (31) overlap. Cooner & Associates performed the vertical accuracy and horizontal accuracy QA/QC analysis.


The purpose of this project is to provide professional surveying and LiDAR services to the SWFWMD for the creation of a high-resolution digital elevation model for a 72.81 Square mile area of interest (AOI) in Pasco County, Florida(based on a 5,000-ft by 5,000-ft tiling scheme). The project area is shown in the graphic above and required 106 flight lines flown at 5,500' ASL.



Supplemental Information:

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

A report for this dataset is available at:


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
None swfwmd

Temporal Keywords

Thesaurus Keyword
None 2011
None February
None January

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
Data Presentation Form: las
Entity Attribute Overview:

Lidar points in LAZ format (Classes 1,2,6,9,10,12,15,16)

Entity Attribute Detail Citation:


Distribution Liability:

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

Support Roles

Data Steward

CC ID: 673035
Date Effective From: 2011-12-15
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


CC ID: 673037
Date Effective From: 2011-12-15
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Metadata Contact

CC ID: 673038
Date Effective From: 2011-12-15
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202

Point of Contact

CC ID: 673036
Date Effective From: 2011-12-15
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1136052
W° Bound: -82.7644266545
E° Bound: -82.2056165737
N° Bound: 28.4186217934
S° Bound: 27.1692991462

Extent Group 1 / Time Frame 1

CC ID: 1136047
Time Frame Type: Discrete
Start: 2011-01-29

Extent Group 1 / Time Frame 2

CC ID: 1136048
Time Frame Type: Discrete
Start: 2011-01-30

Extent Group 1 / Time Frame 3

CC ID: 1136049
Time Frame Type: Discrete
Start: 2011-01-31

Extent Group 1 / Time Frame 4

CC ID: 1136050
Time Frame Type: Discrete
Start: 2011-02-13

Extent Group 1 / Time Frame 5

CC ID: 1136051
Time Frame Type: Discrete
Start: 2011-02-14

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:;

Data Access Constraints:


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: 740823
Download URL:
File Name: Customized Download

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 740824
Download URL:
File Name: Bulk Download

Simple download of data files.



CC ID: 740826
URL Type:
Online Resource


CC ID: 740827
URL Type:
Online Resource


CC ID: 740828
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz

This graphic shows the coverage of the 2011 Pasco County (FL) lidar collection.

Activity Log

Activity Log 1

CC ID: 673059
Activity Date/Time: 2016-11-16

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 673058
Activity Date/Time: 2017-11-14

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using '' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 718249
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 740825
Activity Date/Time: 2018-03-13

Partial upload to move data access links to Distribution Info.

Data Quality


These data are not attributed.

Horizontal Positional Accuracy:

The scope stated that horizontal accuracies for the LiDAR data sets should meet or exceed a verified horizontal accuracy of 1.158 meters at the 95% confidence interval (0.671 meters RMSE) as specified in the FGDC Geospatial Positioning Accuracy Standards, Part 3: National Standard for Spatial Data Accuracy (NSSDA). A minimum of thirty independent checkpoints within the project area were used for verification.; Quantitative Value: 1.158 meters, Test that produced the value: +/- 115.8 cm, 2 sigma

Vertical Positional Accuracy:

The scope also defined the Fundamental Vertical Accuracy (FVA) at meeting or exceeding 0.183 meters at 95% confidence level (0.0914 meter RMSE) in open well defined terrain. A minimum of thirty check points for each land cover category will be checked (Urban; Bare Ground/Short Grass; and Brush). Supplemental Vertical Accuracy (SVA) shall meet or exceed 0.363 meters (0.192 meter RMSE) with a minimum of thirty check points in the following land cover types, (Wet Prairies and Pine Flatwoods). Finally the Consolidated Vertical Accuracy (CVA) shall not exceed the above accuracy requirements when all the values are tested as a combined QC check.; Quantitative Value: 0.061 meters, Test that produced the value: 6.1 cm RMSEz

Completeness Report:

This data set covers the spatial extent of topographic lidar data obtained during this survey.

Conceptual Consistency:

Data covers the tile scheme provided for the county and was verified for correct topology. Hydro connectivity, monotonicity and vertical consistency of the breaklines was validated.


Process Steps

Process Step 1

CC ID: 1136044

All flights for the project were accomplished with two customized single-engine Cessna 206s' which provide an ideal, stable aerial base for LiDAR acquisition. This platform has relatively fast cruise speeds that are beneficial for project mobilization I demobilization while maintaining relatively slow stall speeds which can prove ideal for collection of a high-density, consistent data posting.

Photo Science utilized two Optech Gemini scanners on this project (Serial Numbers 246 and 247). The systems are capable of collecting data at a maximum frequency of 167kHz, which affords elevation data collection of up to 167,000 points per second. The system utilizes a Multi-Pulse in the Air Option (MPIA). This sensor is also equipped with the ability to measure up to 4 returns per outgoing pulse from the laser and these come in the form of 151, 2nd, 3rd, and last returns. The intensity of the first three returns is also captured during the aerial acquisition.

Optech DASHmap software was used in the post-processing of the airborne GPS and inertial data. This software suite includes the Applanix POSPac and Waypoint's GrafNav solutions. POSPac provides the smoothed best estimate of trajectory (SBET) that is necessary for Optech's post processor to develop the point cloud from the

Lidar missions. The point cloud was created using Optech's Post Processor software. GeoCue's TerraScan was used in the creation of files needed in downstream processing, as well as in the tiling of the dataset into more manageable file sizes. The TerraScan and TerraModeler software packages are then used for the automated data classification, manual cleanup, and bare earth generation from this data. Project specific macros were used to classify the ground and to remove the side overlap between parallel flight lines. All data were manually reviewed and any remaining artifacts removed using TerraScan and TerraModeler. QT Modeler was used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable LAS 1.2 files for both the All Point Cloud Data and the Bare Earth. In-house software was then used to perform final statistical analysis of the classes in the LAS files.

Process Date/Time: 2009-01-01 00:00:00

Process Step 2

CC ID: 1136045

The NOAA Office for Coastal Management (OCM) received the topographic lidar files in LAS format from SWFWMD. The files contained lidar easting, northing, elevation, intensity, return number, etc. The data was received in Florida State Plane West 0902 (US ft) and NAVD88 (US ft). OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. The files were reviewed and erroneous elevations were removed.

2. Files were converted to geographic coordinates and vertically transformed to ellipsoid heights.

Process Date/Time: 2014-09-24 00:00:00

Catalog Details

Catalog Item ID: 49700
GUID: gov.noaa.nmfs.inport:49700
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