20201217
13441700
1.0
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CreateMosaicDataset E:\DCGIS\Projects\Lidar_2020\Final\Lidar_2020.gdb DSM PROJCS['NAD_1983_StatePlane_Maryland_FIPS_1900',GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',400000.0],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-77.0],PARAMETER['Standard_Parallel_1',38.3],PARAMETER['Standard_Parallel_2',39.45],PARAMETER['Latitude_Of_Origin',37.66666666666666],UNIT['Meter',1.0]],VERTCS['NAVD_1988_Geoid_12B',VDATUM['North_American_Vertical_Datum_1988'],PARAMETER['Vertical_Shift',0.0],PARAMETER['Direction',1.0],UNIT['Meter',1.0]] # # None #
AddRastersToMosaicDataset E:\DCGIS\Projects\Lidar_2020\Final\Lidar_2020.gdb\DSM "Raster Dataset" E:\DCGIS\Projects\Lidar_2020\Final\DSM UPDATE_CELL_SIZES UPDATE_BOUNDARY NO_OVERVIEWS # 0 1500 # # SUBFOLDERS "Allow duplicates" NO_PYRAMIDS NO_STATISTICS NO_THUMBNAILS # NO_FORCE_SPATIAL_REFERENCE NO_STATISTICS # NO_PIXEL_CACHE C:\Users\brian.putz\AppData\Local\ESRI\rasterproxies\DSM
CalculateStatistics E:\DCGIS\Projects\Lidar_2020\Final\Lidar_2020.gdb\DSM 1 1 # OVERWRITE "Feature Set"
AnalyzeMosaicDataset X:\Productionfiles\Lidar_2020\Lidar_2020.gdb\DSM # FOOTPRINT;FUNCTION;RASTER;PATHS
DSM
file://\\Gisimgprd1\e\Productionfiles\Lidar_2020\Lidar_2020.gdb
Local Area Network
389400.000000
408600.000000
124200.000000
148200.000000
1
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
NAD_1983_StatePlane_Maryland_FIPS_1900
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FGDC
GIS Data Coordinator
D.C. Office of the Chief Technology Officer
(202) 727-5660
200 I Street SE, 5th Floor
Washington
DC
20003
US
dcgis@dc.gov
20210204
ArcGIS Metadata
1.0
GIS Data Coordinator
D.C. Office of the Chief Technology Officer
(202) 727-5660
200 I Street SE, 5th Floor
Washington
DC
20003
US
dcgis@dc.gov
DC datasets can be downloaded from " http://opendata.dc.gov ".
DSM_2020
2021-01-26
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Digital Surface Model - 1m resolution. The dataset contains the 1m Digital Surface Model for the District of ColumbiaSome areas have limited data. The lidar dataset redaction was conducted under the guidance of the United States Secret Service. Except for classified ground points and classified water points, all lidar data returns and collected data were removed from the dataset within the United States Secret Service 1m redaction boundary generated for the 2017 orthophoto flight</SPAN></P></DIV></DIV></DIV>
1 meter resolution DSM from lidar flown on 6/26/2020, 6/29/2020, and 6/30/2020. This data is used for the planning and management of Washington, D.C. by local government agencies.
GIS Data Coordinator
D.C. Office of the Chief Technology Officer
(202) 727-5660
200 I Street SE, 5th Floor
Washington
DC
20003
US
dcgis@dc.gov
Washington D.C., DC, District of Columbia
lidar, 2020, dsm, topography, bare earth, elevation, Digital Surface Model, DC GIS, DCGIS
Washington D.C.
DC
District of Columbia
lidar
2020
dsm
topography
bare earth
elevation
Digital Surface Model
DC GIS
DCGIS
See access and use constraints information.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This work is licensed under a Creative Commons Attribution 4.0 International License.</SPAN></P></DIV></DIV></DIV>
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
-77.122373
-76.900716
38.785481
39.001746
1
-77.122373
-76.900716
39.001746
38.785481
The DSM was generated using all first return and only return points with the noise points excluded. The points were run through a Fugro proprietary software to generate a surface model at the required 1 m resolution. The hydro breaklines used in the DTM were burned into the DSM with the bridges and piers masked out of the water polygons so they remained in the final deliverable surface.
Fugro Geospatial, Inc.
(301) 948-8550
7320 Executive Way # 107
Frederick
MD
21704
The lidar acquisition was flown on 6/26/2020, 6/29/2020, and 6/30/2020, at an altitude of 9,022 feet above mean sea level and composed of 28 flight lines, 26 primary lines and two cross ties. All lidar data was collected with a Cessna 441, tail# N93HC and a Leica ALS80 lidar sensor, #130. Due to the known difficulties flying over DC, the ALS80 sensor was selected to take advantage of its flight altitude and speed, minimizing the number of lifts for the various flight restrictions. All lidar was collected in conjunction with airborne GPS.
ground condition
2020-06-26
2020-06-30
2
24000
1.000000
19200
1.000000
1
0
389400.000000 124200.000000
389400.000000 148200.000000
408600.000000 148200.000000
408600.000000 124200.000000
399000.000000 136200.000000
EPSG
4.5(3.0.1)
Band_1
393.039001
-9.183000
32