2018 Coastal Georgia 4-Band 8 Bit Imagery

The National Oceanic and Atmospheric Administration’s Office for Coastal Management and Georgia Department of Natural Resources (DNR) requires acquisition and processing of 4-band aerial imagery. The data is to be collected during leaf‐off conditions during +/- 2 hours of low tide. The sun angle shall not be less than 30 degrees and there shall be no clouds, cloud shadows or haze in the imagery. The imagery shall be acquired when streams and rivers are within their banks when there is no flooding conditions. This data set is consisting of an area of interest (AOI) for the NOAA Coastal GA Imagery project. Aerial Imagery acquisition for this project was completed in nine (9) flight lifts undertaken between the 25th of February and 13th of March 2018.

This data depicts geographic features on the surface of the earth. It was created to provide easily accessible geospatial data which is readily available to enhance the capability of Federal, State, and local emergency responders, as well as storm water management and assessment.

No restrictions apply to this data the data represented is the result of data collection and processing per contract specifications and indicates the general existing conditions at the time of the data collection. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose.

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None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of the limitations of the data. Acknowledgment of Coastal Regional Commission would be appreciated for products derived from these data.The data represented is the result of data collection and processing per contract specifications and indicates the general existing conditions at the time of the data collection. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose.

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ArcGIS 10.1; Microsoft Windows 7; Microsoft Office; Intergraph's suite of photogrammetric products including Z/I Inflight and GeoMedia OrthoPro

The 15 cm or 0.5 feet data set was produced and tested to meet or exceed a positional accuracy of +-2.5 feet CE95. Actual positional accuracy was found to be RMSEx = 0.598 feet and RMSEy = 0.407 feet which equates to Positional Horizontal Accuracy = +/- 1.230 feet at the 95% confidence level.

A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist.Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique “NODATA” value. This value is identified in the appropriate location within the file header.