20221006
10412600
1.0
ISO 19139 Metadata Implementation Specification
FALSE
Delta_DEM_BareEarth_WebMerc
-10201834.529500
-9803660.691552
3525905.419043
4174784.159200
1
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator_Auxiliary_Sphere
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.6'><WKT>PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>148923141.92838538</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem>
32
FALSE
None
1
AMD
TRUE
continuous
floating point
4100
15000
1000
20
2048
20
75
0.01
10
600
300
Basic
1
NorthWest,Center,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None
None,JPEG,LZ77,LERC
None
None,Basic,Base-Top Height,Top-Top Shadow Height,Base-Top Shadow Height,3D
0
-1
0.8
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NorthWest,Center,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None
None,JPEG,LZ77,LERC
None,Basic,Full
NONE
Name,MinPS,MaxPS,LowPS,HighPS,Tag,GroupName,ProductName,CenterX,CenterY,ZOrder,Shape_Length,Shape_Area,ProjectName,OriginalElevationUnit
166649.733299467
0.304800609601219
3332.99466598933
43636.7298476505
43645.8267690394
0
20190705
10213200
20190705
10213200
625000
5000
Brad Segrest
Mississippi Department of Environmental Quality
Geographic Information Systems Manager
515 E Amite St
Jackson
MS
39201
bsegrest@mdeq.ms.gov
US
601-961-5657
Brad Segrest
This dataset was created by MDEQ to provide consistnently formatted elevation accross the State. This mosaic encompasses 15 different Lidar projects and the 1996 MARIS10M DEM. The 10M DEM was used in areas of the Tupelo Dataset where data was missing. Lidar is deleivered to MDEQ in various formats. Generally the DEM's are some type of RASTER dataset in one or Many folders. To aid in data management the rasters were loaded into ESRI File Geodatabases. Mosaics for the individual projects were then created. In 2018 an attempt was made to stitch these porject mosaics together, but all attempts failed. In 2019 a new mosaic was built from the Base rasters in the project FGDB. After rebuilding overviews the statewide Mosaic is 582gb on disc.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset is a Mosaic of Lidar Projects spanning 10 years in Mississippi. Individual Project Metadata can be found at the File Geodatabase level of the projects in the SourceTiles folder. The Web Mercator Coordinate system was chosen for this Mosaic to maximze its usability in web mapping. The base rasters retained their original Coordinate system, and I have not had any trouble reprojecting the data. The Statewide Mosaic reports all elevations in US Feet. Orignial elevations were mixed between Meters and Feet. I insterted a function for unit conversion on all reasters originally reporting elevation in Meters. This Math only exists in the Mosaic, and will not be the same if you load an individual raster from the SourceTiles folder.</SPAN></P></DIV></DIV></DIV>
Brad Segrest, MDEQ, MARIS, NRCS, NOAA, USACE, Steve Walker MARIS, Barbara Yassin MDEQ.
Mississippi Lidar Collectoin 2019
2019-07-01T00:00:00
2019-07-01T00:00:00
Brad Segrest
Mississippi Department of Environmental Quality
Geographic Information Systems Manager
515 E Amite St
Jackson
MS
39201
bsegrest@mdeq.ms.gov
US
601-961-5657
Brad Segrest
Mississippi Department of Environmental Quality
Geographic Information Systems Manager
515 E Amite St
Jackson
MS
39201
bsegrest@mdeq.ms.gov
US
601-961-5657
Brad Segrest
Delta_DEM_BareEarth_WebMerc
elevation
lidar
mosaic
Mississippi
0
-91.644639
-88.067782
35.080191
30.173766
Lidar Project Collection dates are in the Metadata for the porject FGDB.
2009-08-01T00:00:00
2019-06-30T00:00:00
Brad Segrest
Mississippi Department of Environmental Quality
Geographic Information Systems Manager
515 E Amite St
Jackson
MS
39201
bsegrest@mdeq.ms.gov
US
601-961-5657
Weekdays 0900-1700
Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270
Original Rasters per project were loaded into File Geodatabases. If the File Names started with a number a prefix was added. Most often that prefix was UTM because the rasters were projected as UTM and the name corresponded to the grid. Once the tiles were loaded into FGDB a Mosaic was made with Web Mercator Projection. All rasters were loaded into the Mosaic. Once all the reasters were loaded Overviews were built. The MS_10Meter DEM was added to fill in holes in between project datasets. As new lidar projects are added older data will be removed.
Original Rasters per project were loaded into File Geodatabases. If the File Names started with a number a prefix was added. Most often that prefix was UTM because the rasters were projected as UTM and the name corresponded to the grid.
Rasters were loaded into project FGDB for management ease.
2019-06-01T00:00:00
Mosaic was made with Web Mercator Projection. All rasters were loaded into the Mosaic. Once all the reasters were loaded Overviews were built. The MS_10Meter DEM was added to fill in holes in between project datasets. As new lidar projects are added older data will be removed.
Web Mercator was chosen to maximize usefulness accross web mapping platforms.
2019-06-01T00:00:00
Elevations were reported in a mix of Meters and Feet. All footprints reported in Meters had the function Unit Conversion (Meters to Feet) added. Once the overviews were built the consistancy was checked. The Yazoo Delta Phases I and II allong with The Coastal Project drew at a smaller scale than the rest of the data sets. The maxps field was recclucluated for all tiles in these projects to match the value 1.524003 that the rest of the state had. This made the Overview seamless.
2019-06-28T00:00:00
Several areas were added using 10mDEM data which. This happened in the Tupelo Project AOI.
2019-07-01T00:00:00
Elevation
1306342
0.304801
2128863
0.304801
2
1
0
-10201834.529500 3525905.419043
-10201834.529500 4174784.159200
-9803660.691552 4174784.159200
-9803660.691552 3525905.419043
-10002747.610526 3850344.789121
[ft_us]
Elevation
feet
Band_1
805.319458
-9.827932
32
Elevation Displayed in Feet
False
False
False
False
False
EPSG
8.8(9.3.1.2)
20190705