2015 NRCS-MDEQ Lidar: Southeast Mississippi QL2

This report contains a comprehensive outline of the Mississippi QL2 and Tupelo QL3 Lidar Processing task order for the United States Geological Survey (USGS). This task is issued under USGS Contract No. G10PC00057, Task Order No. G14PD01046. This task order requires lidar data to be acquired over approximately 4385 square miles. The lidar was collected and processed to meet a maximum Nominal Post Spacing (NPS) of 0.7 meter. The NPS assessment is made against single swath, first return data located within the geometrically usable center portion (typically ~90%) of each swath.

This task order also requests the processing of previously collected QL3 data near Tupelo, Mississippi. The lidar was collected and processed to meet a maximum Nominal Post Spacing (NPS) of 1.0 meter. The NPS assessment is made against single swath, first return data located within the geometrically usable center portion (typically ~90%) of each swath.

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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/geoid18/4907/supplemental/ms2015_nrcs_mdeq_southeast_m4907.kmz

Lidar report for this data set is available here:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4907/supplemental/ms2015_nrcs_mdeq_southeast_m4907_lidarreport.pdf

Lidar points in LAZ format (Classes 1,2,7,9,10,17,18)

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Any conclusions drawn from the analysis of this information are not the responsibility of USDA-NRCS, MDEQ, Wooolpert, 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=4907;

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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

None reported; Quantitative Value: 100 meters, Test that produced the value: Explicity horizontal accuracy is not reported in the accuracy report provided. Assumptions of 1 meter.

The vertical accuracy statistics were calculated by comparison of the lidar bare earth points to the ground surveyed QA/QC points. Mississippi QL2 Lidar was processed and delivered in NAD1983(2011) UTM16, NAVD88 Geoid12A meters. Data deliverables were reprojected and also delivered in NAD1983(2011) UTM15, NAVD88 Geoid12A meters. It should be noted that accuracy analysis was reported for the UTM16 data.; Quantitative Value: 0.150 meters, Test that produced the value: LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.150 meters fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 Tested against the TIN using independent check points.; Quantitative Value: 0.162 meters, Test that produced the value: Bare-Earth DEM Fundamental Vertical Accuracy (FVA) Tested 0.162 meters fundamental vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 Tested against the DEM using independent check points.; Quantitative Value: 0.232 meters, Test that produced the value: Bare Earth/Open Terrain Land Cover Classification Supplemental Vertical Accuracy (SVA) Tested 0.232 meters supplemental vertical accuracy at the 95th percentile in Bare Earth/Open Terrain. Tested against the DEM.; Quantitative Value: 0.114 meters, Test that produced the value: Urban Land Cover Classification Supplemental Vertical Accuracy (SVA) Tested 0.114 meters supplemental vertical accuracy at the 95th percentile in Urban. Tested against the DEM. ; Quantitative Value: 0.238 meters, Test that produced the value: Tall Weeds/Crops Land Cover Classification Supplemental Vertical Accuracy (SVA) Tested 0.238 meters supplemental vertical accuracy at the 95th percentile in Tall Weeds/Crops. Tested against the DEM. ; Quantitative Value: 0.249 meters, Test that produced the value: Brush Lands and Trees Land Cover Classification Supplemental Vertical Accuracy (SVA) Tested 0.249 meters supplemental vertical accuracy at the 95th percentile in Brush Lands and Trees. Tested against the DEM.; Quantitative Value: 0.237 meters, Test that produced the value: Forested and Fully Grown Land Cover Classification Supplemental Vertical Accuracy (SVA) Tested 0.237 meters supplemental vertical accuracy at the 95th percentile in Forested and Fully Grown. Tested against the DEM.; Quantitative Value: 0.232 meters, Test that produced the value: Consolidated Vertical Accuracy (CVA) Tested 0.232 meters consolidated vertical accuracy at the 95th percentile level, derived according to ASPRS Guidelines for Vertical Accuracy Reporting for LiDAR Data. Tested against the DEM. Based on the 95th percentile error in all land cover categories combined.

The LiDAR data is visually inspected for completeness to ensure that are no gaps between flight lines.

All formatted data are validated using commercial GIS software to ensure proper formatting and loading prior to delivery.