LiDAR Montgomery County - DEM Feet: State of Maryland

Description:

Montgomery and Prince George's counties project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83 (HARN), State Plane, Feet and vertical datum of NAVD88 (GEOID12B), Feet. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to 1,413 individual 4000 ft x 6000 ft tiles, as tiled Intensity Rasters, and as tiled bare-earth DEM; all tiled to the same 4000 ft x 6000 ft schema. Ground Conditions: Lidar was collected in early to mid 2018, while no snow was on the ground and rivers were at or below normal levels. Sensor errors in mulitple locations were identified in processing, additonal acquisition on 7/20/2018 was completed to remedy the errors. 2016 lidar data was used with approval in a single area of restricted airspace. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Sanborn Map Company, Inc. established a total of 23 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 79 independent accuracy check points in Open Terrain and Urban landcovers were used to assess the vertical accuracy of the data. These check points were not used to calibrate or post process the data.This is a MD iMAP hosted service. Find more information athttps://imap.maryland.gov.Image Service Link:https://lidar.geodata.md.gov/imap/rest/services/Montgomery/MD_montgomery_dem_ft/ImageServer

Creator:

DoIT

Provider:

Maryland iMap

Resource Class:

Imagery

Resource Type:

LiDAR

Subject:

County government records

Theme:

Imagery

Temporal Coverage:

2021

Date Issued:

2019-03-19

Place:

Martin's Additions, Maryland, Cottage City, Maryland, Edmonston, Maryland, Clarksburg, Maryland, Howard County, Maryland, Cloverly, Maryland, Redland, Maryland, South Kensington, Maryland, North Brentwood, Maryland, Washington Grove, Maryland, Berwyn Heights, Maryland, Buckeystown, Maryland, Baltimore County, Maryland, Brookmont, Maryland, Hillandale, Maryland, Barnesville, Maryland, Chillum, Maryland, Chevy Chase Village, Maryland, Takoma Park, Maryland, Burnt Mills, Maryland, Landover Hills, Maryland, Chevy Chase Section Five, Maryland, Burtonsville, Maryland, Darnestown, Maryland, Montgomery County, Maryland, North Chevy Chase, Maryland, Poolesville, Maryland, Prince George's County, Maryland, University Park, Maryland, North Kensington, Maryland, Kensington, Maryland, Forest Glen, Maryland, Highland, Maryland, Aspen Hill, Maryland, Spencerville, Maryland, Potomac, Maryland, Hyattsville, Maryland, Langley Park, Maryland, Fairland, Maryland, Mount Rainier, Maryland, Travilah, Maryland, Garrett Park, Maryland, East Riverdale, Maryland, Layhill, Maryland, White Oak, Maryland, Glen Echo, Maryland, Laytonsville, Maryland, Kemp Mill, Maryland, Bladensburg, Maryland, Calverton, Maryland, Brentwood, Maryland, Four Corners, Maryland, Derwood, Maryland, Flower Hill, Maryland, Chevy Chase, Maryland, Colesville, Maryland, Somerset, Maryland, College Park, Maryland, Adelphi, Maryland, North Bethesda, Maryland, Fulton, Maryland, Leisure World, Maryland, Chevy Chase View, Maryland, Ten Mile Creek, Maryland, Beltsville, Maryland, North Potomac, Maryland, Lisbon, Maryland, Frederick County, Maryland, Montgomery Village, Maryland, Friendship Heights Village, Maryland, Glenmont, Maryland, Gaithersburg, Maryland, Cabin John, Maryland, Bethesda, Maryland, Ashton-sandy Spring, Maryland, Olney, Maryland, Damascus, Maryland, Rockville, Maryland, Germantown, Maryland, Woodlawn, Maryland, Wheaton, Maryland, Adamstown, Maryland, Chevy Chase Section Three, Maryland, Brookeville, Maryland, Silver Spring, Maryland, Riverdale Park, Maryland, Maryland

Access Rights:

Public

Format:

Imagery

Language:

English