A land classification system under the Montgomery County Zoning Ordinance intended to regulate the land uses and buildings permitted in each zone, excluding road right-of-ways. Certain uses are permitted by right and others as conditional uses. Any use not expressly permitted is prohibited. The Ordinance also excludes certain uses from each zone. The text of the Zoning Ordinance specifies the permitted uses, the bulk (massing) of buildings, the required yards, the necessary off-street parking and other prerequisites to obtain permission to develop. Zoning Blocks: The main block boundaries identifying the base zone for parcels. Overlay Zones: Various overlay zones apply modifying factors to standards and uses normally found on the zoning blocks beneath them. Zoning History Annotations: Zoning case history and special exception notations Overlay TDR: Various overlay zones apply modifying factors to standards and uses normally found on the zoning blocks beneath them. For further information: https://codelibrary.amlegal.com/codes/montgomerycounty/latest/overview For more information, contact: GIS Manager Information Technology & Innovation (ITI) Montgomery County Planning Department, MNCPPC T: 301-650-5620

A variance is required when an application has submitted a proposed project to the Department of Permitting Services and it is determined that the construction, alteration or extension does not conform to the development standards (in the zoning ordinance) for the zone in which the subject property is located. A variance may be required in any zone and includes accessory structures as well as primary buildings or dwellings. Update Frequency : Daily

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

Exercise OnlyPurpose and Audience:The purpose of this map is to summarize the potential impact of a flood hazard in Montgomery County, Maryland. The map shows areas within the flood hazard zone and their overall vulnerability based on Social Vulnerability Index (SoVI). This map also includes an Enriched Flood Hazard layer that shows statistics on endangered households and vulnerable populations within the flood hazard area. This map is intended as a resource for the Montgomery County emergency management agency, for preparedness planning and assessment of the risk to people and property in the county. Layers and Data Sources:

The 2014 SoVI layer was obtained from the ATSDR website: https://svi.cdc.gov/SVIDataToolsDownload.html. It ranks each census tract’s vulnerability based on socioeconomic, minority status/language, household composition, and housing transportation statistics. This layer shows the total vulnerability percentile ranking within the state, 0 – 1, where 1 is the highest social vulnerability.Fire Stations, Hospitals, Nusing Homes, Public Schools, Power Plants and Substations layers were obtained from the Homeland Infrastructure Foundation-Level Data (HIFLD) Open Data Portal: https://hifld-dhs-gii.opendata.arcgis.com/. The Police Station layer was obtained from the Maryland Open Data Portal: https://data.maryland.gov/Public-Safety/MD-iMAP-Maryland-Police-County-Police-Stations/ng3f-pf6x. These layers represent valuable and vulnerable populations and facilities (i.e. Nusing Homes, Public Schools), as well as resources for responding to a disaster (Police Stations, Fire Stations, Hospitals). The Overall Place Vulnerability layer was created using the SoVI layer and data obtained from the FEMA Flood Map Service Center: http://msc.fema.gov/portal/advanceSearch. Overall Place Vulnerability was determined by the intersection of Special Flood Hazard Areas in the FEMA National Flood Hazard Layer and tracts with high social vulnerability, because high SoVI indicates the area may be more adversely affected by a hazard and less resilient in the aftermath. Areas where flood zones intersected tracts with a SoVI total percentile ranking greater than 0.80 were designated as “High”overall place vulnerability, because these tracts are more vulnerable than 80% of tracts in the state. Areas where flood zones intersected tracts with SoVi ranking between 0.60 and 0.80 were designated “Medium-High” overall place vulnerability. The product of this analysis was an Overall Place Vulnerability layer. The US National Grid (USNG) layer and Topographic basemap serve as reference and were obtained from ESRI.