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_dem_ft/ImageServer

Geospatial data about Montgomery County, Maryland Addresses. Export to CAD, GIS, PDF, CSV and access via API.

This dataset includes Montgomery County government facilities. It was developed and is maintained by TEBS-GIS. This dataset satisfies County basemap accuracy requirements (1:2400) and is included in the Places of Interest Guide.This data is used both by Government and the public. The Places of Interest Guide can be used to find a Place of Interest within Montgomery County, Maryland by address, by title, by place name or city, or by category. Once you've located the place of interest, then you can generate travel directions, time estimates, maps and distances.

Updated as needed from https://www.montgomerycountymd.gov/mcfrs/connect/phone.htmlCan be downloaded from the GIS Data Portal here.Access directly in the TEBS-GIS database in SDE.LOCATIONS, SDE.Fire_Station

Geospatial data about Montgomery County, Maryland Parcels. Export to CAD, GIS, PDF, CSV and access via API.

Geospatial data about Montgomery County, Maryland Communities. Export to CAD, GIS, PDF, CSV and access via API.

This data release includes the data used to generate histograms that compared total watershed pollutant removal efficiency (TWPRE) in the two study watersheds Crystal Rock (traditional watershed) and Tributary (Trib.) 104 low impact development (LID watershed) to determine if LID BMP design offered an improved water quality benefit. Input/calibrants data used in the model (Monte Carlo) are described in the manuscript as mentioned in the list below: -BMP Name and Type: references in the manuscript -BMP Connectivity: Proprietary (derived from Montgomery County GIS Data) -BMP Drainage Areas: Proprietary (derived from Montgomery County GIS Data) -BMP Efficiency Ranges: referenced in manuscript -Baseline Pollutant Loadings: referenced in manuscript Stormwater runoff and associated pollutants from urban areas in the Chesapeake Bay Watershed represent a serious impairment to local streams and downstream ecosystems, despite urbanized land comprising only 7% of the Bay watershed area. Excess nitrogen, phosphorus, and sediment affect local streams in the Bay watershed by causing problems ranging from eutrophication and toxic algal blooms to reduced oxygen levels and loss of biodiversity. Traditional management of urban stormwater has primarily focused on directing runoff away from developed areas as quickly as possible. More recently, stormwater best management practices (BMPs) have been implemented in a low impact development (LID) manner on the landscape to treat stormwater runoff closer to its source.The objective of this research was to use a modeling approach to compare total watershed pollutant removal efficiency (TWPRE) of two watersheds with differing spatial patterns of SW BMP design (traditional and LID), and determine if LID SW BMP design offered an improved water quality benefit.

Map of Regional Service Center locations, contact information and hours.

https://gis3.montgomerycountymd.gov/arcgis/rest/services/ploi/rsc/MapServer/0

Updated as needed from https://www.montgomerycountymd.gov/Government/rsc.htmlAccess directly in the TEBS-GIS database in SDE.LOCATIONS, SDE.RSC

This metadata record describes the classified bare earth lidar digital elevation model (DEM) data products derived from the Montgomery County, MD LiDAR project covering the defined project area of Montgomery County and immediate surroundings.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Image Service Link: https://lidar.geodata.md.gov/imap/rest/services/Montgomery/MD_montgomery_2013_shadedRelief_RGB/ImageServer

This dataset contains all zip codes in Montgomery County. Zip codes are the postal delivery areas defined by USPS. Zip codes with mailboxes only are not included. https://gis3.montgomerycountymd.gov/arcgis/rest/services/general/zipcode/MapServer/0

Access directly in the TEBS-GIS database in SDE.DISTRICTS, SDE.CNTY_BNDY

County boundary polygon of Montgomery County, Maryland.For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

Map of Regional Service Center locations, contact information and hours.

https://gis3.montgomerycountymd.gov/arcgis/rest/services/ploi/rsc/MapServer/0

For more information: https://www.montgomerycountymd.gov/HHS-Program/ADS/Villages/Villagesindex.html

Updated as needed from https://www.montgomerycountymd.gov/pol/districts.htmlCan be downloaded from the GIS Data Portal here.Access directly in the TEBS-GIS database in SDE.LOCATIONS, SDE.Police_Station

Parks in Montgomery County, MD from MNCPPC

Stormwater management facilities (SWMFAC) are structural best management practices that temporarily store or treat stormwater runoff to reduce flooding, remove pollutants, and provide other amenities. For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

Polygons provided by Maryland General Assembly and clipped to Montgomery County by TEBS-GIS

Montgomery County Department of Environmental Protection delineated 12 digit watersheds that are also recognized by the state of Maryland.