Web services > LiDAR > Maryland > 2025-present

Maryland LiDAR Montgomery County - Slope [Maryland]

ArcGIS Online for Maryland · 2025 Full Details

Georeferenced: false

Full Details

Title
Maryland LiDAR Montgomery County - Slope [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 at https://imap.maryland.gov . Image Service Link: https://mdgeodata.md.gov/lidar/rest/services/Montgomery/MD_montgomery_slope_m/ImageServer
Creator
ArcGIS Online for Maryland
Temporal Coverage
Last Modified: 2025-05-12
Date Issued
2019-03-19
Rights
The Spatial Data, and the information therein, (collectively the "Data") is provided "as is" without warranty of any kind, either expressed, implied, or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct, indirect, incidental, consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data, nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.
Access Rights
Public
Format
ArcGIS ImageMapLayer
Language
English
Date Added
August 10, 2025
Provenance Statement
The metadata for this resource was last retrieved from Maryland iMap on 2025-08-24.

Resource Class

Resource Type

Theme

Place

Local Collection

Links

Cite and Reference

  • Citation
    ArcGIS Online for Maryland (2019). Maryland LiDAR Montgomery County - Slope [Maryland]. . https://data.imap.maryland.gov/datasets/maryland::maryland-lidar-montgomery-county-slope (web service)
  • BTAA Geoportal Link

View more items like this one...

Maryland LiDAR Prince Georges County - Slope [Maryland]

2025

Maryland LiDAR Montgomery County - Hillshade [Maryland]

2025

Maryland LiDAR Montgomery County - Aspect [Maryland]

2025

Maryland LiDAR Montgomery County - Shaded Relief [Maryland]

2025

Maryland LiDAR Montgomery County - DEM Meters [Maryland]

2025

Maryland LiDAR Montgomery County - DEM Feet [Maryland]

2025

Maryland LiDAR Prince Georges County - Aspect [Maryland]

2025

Maryland LiDAR Prince Georges County - Shaded Relief [Maryland]

2025

Maryland LiDAR Prince Georges County - Hillshade [Maryland]

2025

Maryland LiDAR Prince Georges County - DEM Meters [Maryland]

2025