2007 Florida Division of Emergency Management (FDEM) Lidar Project: Bay County

This Light Detection and Ranging (LiDAR) LAS dataset is a topographic survey conducted for a coalition of GIS practitioners,

including the Florida Division of Emergency Management (FDEM), Florida Water Management Districts, Florida Fish and Wildlife

Conservation Commission, Florida Department of Environmental Protection, Army Corps of Engineers Jacksonville District, and

other state and federal agencies. The goal for this project is to use the LiDAR data as new elevation inputs for updated SLOSH

data grids. The ultimate result is the update of the Regional Hurricane Evacuation Studies (RHES) for the state. The State of Florida

Division of Emergency Management LiDAR Survey was collected under the guidance of a Professional Mapper/Surveyor.

This data was collected for a portion of Bay County, Florida from 12-23 July 2007. This is a classified lidar data set; bare-earth points

(class 2), water returns (class 9), and unclassified data (class 1). The LiDAR data was flown at a density sufficient to support a maximum

final post spacing of 4 feet for unobscured areas.

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/527/supplemental/FDEM_Lidar_Bay_County.kmz

Original contact information:

Contact Org: Florida Division of Emergency Management (FDEM)

Phone: 850-413-9907

Email: gis@dca.state.fl.us

The LiDAR topographic mapping survey is to support the Florida Division of Emergency Management (FDEM) development and maintenance

of Regional Hurricane Evacuations Studies (RHES), which include vulnerability assessments, and to assist disaster response

personnel in understanding the threats to Florida's citizens and visitors. Additional intended uses for this survey are growth

management, map modernization/floodplain mapping, natural lands stewardship, and homeland security planning.

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A complete description of this dataset is available in the Minimum Technical Standard (MTS report) "Final Report of

Specific Purpose LiDAR Survey - LiDAR, Breaklines, and Contours" submitted to Florida Division of Emergency Management.

This report may be accessed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/527/supplemental/MTS_Report_Bay_County_FL.pdf

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

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.

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.5.1450

Lidar source compiled to meet 1m horizontal accuracy.; Quantitative Value: 1 meters, Test that produced the value:

The PDS team does not perform independent horizontal accuracy testing on the LiDAR. LiDAR vendors perform calibrations on the

LiDAR sensor and compare data to adjoining flight lines to ensure LiDAR meets the 1 meter horizontal accuracy standard at

the 95% confidence level.

The LiDAR was required to meet 0.60 feet Fundamental Vertical Accuracy (FVA) and 1.19 feet Consolidated Vertical Accuracy (CVA).; Quantitative Value: 0.177 meters, Test that produced the value:

Based on the vertical accuracy testing conducted by PDS, using NSSDA and FEMA methodology, vertical accuracy at the

95% confidence level (called Accuracyz) is computed by the formula RMSEz x 1.9600. The dataset for Bay County, Florida

satisfies the criteria:

Countywide lidar dataset tested 0.58 ft (17.7 cm) vertical accuracy at 95% confidence level in open terrain, based on open terrain

RMSEz (0.30 ft) x 1.9600.

Countywide lidar dataset tested 0.86 ft (26.2 cm) vertical accuracy at 95% confidence level in all land cover categories combined,

based on consolidated RMSEz (0.44 ft) x 1.9600.

Please refer to the Supplemental_Information field above for the link to the "Final Report of Specific Purpose LiDAR Survey

- LiDAR, Breaklines, and Contours" for a very detailed report about this data set.

A visual qualitative assessment was performed in the source Lidar dataset.

Data covers the tile scheme provided for the county.