This data was developed in response to citizens’ road maintenance requests from across the state as to whom to contact as the official maintenance authority - be it MDOT State Highway Administration, MDOT Transportation Authority, a county, or a municipality.MDOT SHA Website

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

The County's Water and Sewer Plan assigns a water category and a sewer category to every property in the County. These service area categories serve two functions:They identify areas approved or planned for community water or sewer service and areas intended for service by individual (on-site) systemsThey identify a mechanism for staging community service for those areas planned for community service. The mechanism consists of the use of service area categories W-1 through W- 5 (for water) and S-1 through S-5 (for sewer).The Maryland Department of the Environment (MDE) requires the County to prepare a comprehensive update of the Water and Sewer Plan every three years. Between comprehensive updates, the County approves amendments to the plan (such as service area categories, new or revised policies, and technical information) through procedures described in Chapter 1 of the Plan. The County Executive, acting through the Department of Environmental Protection (DEP), prepares the Plan's comprehensive updates and also provides recommendations to the Council for action on proposed amendments. DEP, with the assistance of other agencies, develops some amendments, typically those that involve policy issues or category changes that affect groups of properties. Property owners also propose amendments, usually those involving category changes for single properties or larger tracts intended for subdivision of new lots. Under state law, the County Council is responsible for approving the plan and its amendments. MDE maintains an oversight authority over the County’s Water and Sewer Plan and its amendments. The agency administers regulations that each county must follow in the preparation of its comprehensive plan, and acts to approve, approve with modifications, or disapprove the Plan or any Plan amendment submitted by the County. As part of this process, MDE seeks guidance from the Maryland Department of Planning for consistency with local and State planning use goals, policies and objectives.For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

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.

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_aspect_m/ImageServer

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

This data release includes the data used to generate sewershed "bubble plots" that compared pollutant removal efficiency (PRE) in each sewershed 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 as compared on a sewershed basis. 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.

A Site Plan is a detailed plan, required only in certain zones, that shows proposed development on a site in relation to immediately adjacent areas. It indicates roads, walks, parking areas, buildings, landscaping, open space, recreation facilities, lighting, etc. Site Plan review is required of all floating zones and of most overlay zones. It is also required in some zones when using optional method of development provisions. Further, certain parking facilities that fall under the provision of the off-street parking section of the Zoning Ordinance are also subject to Site Plan review. For further info: https://montgomeryplanning.org/development/development-applications/site-plan/ For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

This layer is a high-resolution tree canopy change-detection layer for Montgomery County, Maryland. It contains three tree-canopy classes for the period 2009-2014: (1) No Change; (2) Gain; and (3) Loss. It was created by extracting tree canopy from an existing high-resolution land-cover map for 2009 and a high resolution tree canopy map for 2014 and then comparing the mapped trees directly. Tree canopy that existed during both time periods was assigned to the No Change category while trees removed by development, storms, or disease were assigned to the Loss class. Trees planted during the interval were assigned to the Gain category, as were the edges of existing trees that expanded noticeably. Direct comparison was possible because both the 2009 and 2014 maps were created using object-based image analysis (OBIA) and included similar source datasets (LiDAR-derived surface models, multispectral imagery, and thematic GIS inputs). No accuracy assessment was conducted, but the dataset was subjected to thorough manual review and correction.

The Purple Line is a 16-mile light rail line that will extend from Bethesda in Montgomery County to New Carrollton in Prince George's County. It will provide a direct connection to the Metrorail Red, Green and Orange Lines; at Bethesda, Silver Spring, College Park, and New Carrollton. The Purple Line will also connect to MARC, Amtrak, and local bus services. It is currently under construction and is anticipated to be completed in 2027. For more details visit the Purple Line website.

This data contains attributes that indicate elevated and tunnel segments of the alignment.

The Maryland General Assembly, under the Maryland Constitution, enacted new congressional districts under SB 1012 (2022) and new state legislative districts under Senate Joint Resolution 2 (2022), based on the changes in population reported in the 2020 U.S. Census and adjusted in accordance with Maryland’s “No Representation Without Population Act” of 2010. The Maryland Department of Planning (MDP) is the repository of the 2022 congressional and 2022 legislative districts as well as historical reapportionment and redistricting maps and data. MDP is Maryland's designated state agency coordinator for the Census Redistricting Data Program with the U.S. Census Bureau. For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

The data provide consultants, planners, and resource managers with information on wetland location and type. The data were collected to augment the efforts of Maryland's regulatory wetland management programs and to assist in resource management efforts such as the Chesapeake Bay Program and the Coastal Zone Management Program. This data is to be used for guidance purposes only. These digital data files are records of wetlands location and classification as defined by the U.S. Fish & Wildlife Service's National Wetlands Inventory (NWI) program. See the Entity_and_Attribute_Information section for a detailed description of NWI's Classification scheme. These wetlands were mapped by Maryland Department of Natural Resources (MD DNR) using Maryland's Digital Orthophoto Quarter Quads. Data are available in 3.75 minute by 3.75 minute blocks and contain wetlands point, line, and area features and attributes. The wetlands were photo interpreted from the photography flown for the Digital Orthophoto Quarter Quads. These were flown over a period from 1988 to 1995. See suplemental information for additional details. For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

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

State of Maryland Priority Funding Area boundary dataset. This dataset is created and maintained by the Maryland Department of Planning. These boundaries are not intended to serve as a legal description. Fields:CPFA (Certified PFA): If field is populated as “IN” then the PFA has been designated at a Priority Funding Area locally. MUN_CODE (Municipality Code): MUN = within Priority Funding Area (PFA); MUNCOM = PFA with comment; MUN_NONPFA = not in PFA Rural Village Code (RUVI_CODE): RV = within a Rural Village Rural Village Name (RUVI_NAME): Name of the Rural Village COMMENT_STATUS (Comment Status): If field is populated with “NO” then there is no state-placed comment on the area. If the field is populated with “YES” then the state has placed a comment on the area based on eligibility. ACRES (GIS Acres): GIS calculated acres. JURSCODE (Jurisdiction Code) – Four letter county code: ALLE (Allegany), ANNE (Anne Arundel), BACI (Baltimore City), BACO (Baltimore County), CALV (Calvert), CARO (Caroline), CARR (Carroll), CECI (Cecil), CHAR (Charles), DORC (Dorchester), FRED (Frederick), GARR (Garrett), HARF (Harford), HOWA (Howard), KENT (Kent), MONT (Montgomery), PRIN (Prince George’s) QUEE (Queen Anne’s), SOME (Somerset), STMA (St. Mary’s), TALB (Talbot), WASH (Washington), WICO (Wicomico), WORC (Worcester).CERT_DATE (Certification Date) (DD/MM/YYYY): This date is known as the “Certification Date” of the PFA. The date 1/1/1997, or NULL, is used as a default date of when the PFA was certified were first indicated in the GIS layer and not necessarily of when it was actually certified. If there's a date of 1/1/1997, it can be assumed that the PFA was certified on, or before this date. STATE_ELIGIBLE_STATUS (State Eligible): This field is based on whether the PFA has a comment. If there is no comment, then the field will be populated with YES; if there is a state-placed comment, the field will be populated with NO. Point of Contact: Ellen Mussman ellen.mussman@maryland.gov and Meagan Fairfield-Peak meagan.fairfieldpeak@maryland.govDate Last Updated 10/22/2024This is a MD iMAP hosted service. Find more information on https://imap.maryland.gov.https://mdgeodata.md.gov/imap/rest/services/PlanningCadastre/MD_PriorityFundingAreas/FeatureServer/0

State of Maryland municipality boundary dataset.Maryland Department of Planning (MDP) maps annexations from municipalities. This dataset is created and maintained by the Maryland Department of Planning. These boundaries are not intended to serve as a legal description. Fields:MUN_NAME (Municipality Name): Name of Municipality located in Maryland.RESOLUTION_NUMBER (Resolution Number): Local Municipality Annexation Resolution Number.ANNEXATION_DATE (Annexation Date) (DD/MM/YYYY): The Annexation Date field shows when there's been a change in the boundary. This date is known as the “Effective Date” from the municipality. The date 1/1/1997 is used as a default date of when annexation changes were first indicated in the GIS layer and not necessarily of when it was actually annexed. If there's a date of 1/1/1997, it can be assumed that the annexation occurred on this date or before. For example, for Baltimore City, the city boundary was determined hundreds of years ago. Other than that default date, the date will show when the property was annexed. ACRES (GIS Acres): GIS calculated acresJURSCODE (Jurisdiction Code) – Four letter county code: ALLE (Allegany), ANNE (Anne Arundel), BACI (Baltimore City), BACO (Baltimore County), CALV (Calvert), CARO (Caroline), CARR (Carroll), CECI (Cecil), CHAR (Charles), DORC (Dorchester), FRED (Frederick), GARR (Garrett), HARF (Harford), HOWA (Howard), KENT (Kent), MONT (Montgomery), PRIN (Prince George’s) QUEE (Queen Anne’s), SOME (Somerset), STMA (St. Mary’s), TALB (Talbot), WASH (Washington), WICO (Wicomico), WORC (Worcester).

Montgomery County 1951 Orthophotos image service. This historic aerial is hosted by Montgomery County, Maryland. This ArcGIS Online for the National Park Service record was created to catalog the image service for users to find this historic map more easily.This service can also be access by using the Historical Images in Montgomery County, MD web app. For more information on that viewer, see https://www.montgomerycountymd.gov/gis/projects/dapis.html.Learn more about this aerial, including indices and access guidance, use the following websites:https://www.mgs.md.gov/publications/mgs_data_preservation/aerial_photos.htmlhttps://jscholarship.library.jhu.edu/items/167a95b4-574c-40ad-8d5c-2b114a6af133https://guide.msa.maryland.gov/pages/series.aspx?id=SE118The corresponding NPS DataStore on Integrated Resource Management Applications (IRMA) reference is Historic Aerial Photography and Maps (Georeferenced) for Montgomery County, Maryland.

This dataset includes Hospitals located in the Montgomery County vicinity. 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.

This dataset includes shopping centers located within Montgomery County. 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 by TEBS-GIS using various sources. DATA field represents US Shopping Center Classification.Can be downloaded from the GIS Data Portal here.Access directly in the TEBS-GIS database in SDE.LOCATIONS, SDE.Shopping_Center

This mapping application will return a council district when a Montgomery County address is entered. It includes additional contact info about each Council member which is updated by Council staff.