2003 Southwest Florida Water Management District (SWFWMD) LiDAR: Marion County

Merrick and Company produced one foot contours, spot elevations, and obscured areas for

the Southwest Florida Water Management District.

Original contact information:

Contact Name: Diana Burdick

Contact Org: Southwest Florida Water Management District

Title: GIS Analyst

Phone: 352-540-6018

Email: Diana.Burdick@swfwmd.state.fl.us

Developed to support the DISTRICT's regulatory, land management and acquisition,

planning, engineering, and habitat restoration projects

10325

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2546/supplemental/fl2003_swfwmd_marioncounty.kmz

Any conclusions drawn from the analysis of this information are not the responsibility

of Merrick, SWFWMD, NOAA, the Office for Coastal Management or its partners.

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2546

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parts of this data may no longer represent actual surface conditions.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.

The coverage features horizontal positional accuracy and the assurance of that

accuracy depend, in part, on the accuracy of the data inputs to the coverage and the tolerances of the coverage itself.

The input is the photogrammetrically compiled vectors in Microstation design files (.dgn). The coverage model is

created from an Arc Macro Language (AML) routine that follows the database design for precision, fuzzy tolerance,

dangle tolerance, weed tolerance, grain tolerance, and projection parameters.

; Quantitative Value: 0.762 meters, Test that produced the value: Horizontal accuracy was tested by comparing the raw contours from each flightline against adjoining flightlines at specific points.

RMSE for Z = 0.23 feet. The vertical positional accuracy of the data is verified by a control report

that matches known ground control points against LIDAR acquired points. The contours are derived from a digital terrain model that

meets FEMA Accuracy Standards for better than 0.6 feet vertical accuracy.

; Quantitative Value: 0.07 meters, Test that produced the value:

The vertical positional accuracy of the data is

verified by a control report that matches known ground control points against LIDAR

acquired points. The contours are derived from a digital terrain model that meets

FEMA Accuracy Standards for better than 0.6 feet vertical accuracy.

complete

none