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

LiDAR was collected for the whole of Duval County, FL. There was 1 flight area that consisted of 82 flight lines

and an area of about 819 square miles. Seven LiDAR survey missions were conducted to complete the data collection.

LiDAR data collection commenced on March 8, 2007 and concluded on March 17, 2007.

Original contact information:

Contact Org: Florida DEM

Phone: 850-413-9907

Email: gis@dca.state.fl.us

The DTM was developed to support the Florida Division of Emergency Management (FDEM) development and

maintenance of Regional Evacuation Studies (Study), which include vulnerability assessments and assist disaster

response personnel in understanding threats to Florida's citizens and visitors.

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The Minimum Technical Standards (MTS) Report for Duval County, Florida may be viewed at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/524/supplemental/index.html

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 9.2.2.1350

Horizontal accuracy is +/- 3.8 feet at the 95% confidence level using RMSE(r) x 1.7308 as defined by the FGDC Geospatial

Positional Accuracy Standards, Part 3: NSSDA.

; Quantitative Value: 1 meters, Test that produced the value: LiDAR system calibration is available in the MTS Report of Topographic Survey.

0.3 feet RMSE for unobscured ground points; Quantitative Value: 0.091 meters, Test that produced the value:

0.3 feet (9.1 cm) RMSE - tested. The accuracy assessment was performed using a standard method to compute the root

mean square error (RMSE) based on a comparison of ground control points and filtered LiDAR data points. Results for this

delivery area are available in the MTS Report of Topographic Survey.

This LiDAR data represents the complete set of data for 1054 tiles within Duval County.

The LiDAR DTM was developed in accordance with the Baseline Specifications 0.9. The DTM is intended to support 2-foot

contours, and the vertical accuracy of ground points in unobscured areas is not to exceed 0.6-feet RMSE.