2009 SWFWMD Topographic Lidar: Peace River South (Florida)

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 thePeace River watershed. The data were classified into 7 classifications; (1) unclassified, (2) ground, (6) buildings, (9) water, (11) wetlands (reclassed by OCM to 18), (13) bridges (reclassed by OCM to 15), and (20) buffer points (reclassed by OCM to 10).

The Southwest Florida Water Management District (SWFWMD) contracted with Merrick &

Company (Merrick) to acquire one-meter (1m) Ground Sample Distance LiDAR data over a

project area of approximately nine (9) square miles. The LiDAR will be used for developing topography (i.e., breaklines and one-foot [1'] contours) for ten (10) - 5,000' x 5,000' formattedtiles.

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/3691/supplemental/fl2009_swfwmd_peaceriversouth_m3691.kmz

A report for this dataset is available at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/3691/supplemental/fl2009_swfwmd_peaceriversouth_m3691_surveyreport.pdf

Lidar points in LAZ format (Classes 1,2,6,9,10,15,18)

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Any conclusions drawn from the analysis of this information are not the responsibility of SWFWMD, Merrick and Co., 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=3691;

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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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

See Vendor Report

See Vendor Report - Survey Report does not state horizontal accuracy.; Quantitative Value: 1.0 meters, Test that produced the value: 1.0 m untested

The Fundamental Vertical Accuracy (FVA) of the LiDAR bare-earth was tested to meet a 0.183 m

fundamental accuracy at 95% confidence level using RMSEZ x 1.9600 (where as RMSEZ less than or equal to 0.0914m) as defined by the National Standard for Spatial Data Accuracy (NSSDA) in open well defined terrain.; Quantitative Value: 0.0915 meters, Test that produced the value: 9.15 cm RMSEz

Data set has been visually inspected. All data produced strives to meet National Mapping Accuracy Standards (NMAS).

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.