Description: The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. After each decennial census, the Census Bureau delineates urban areas that represent densely developed territory, encompassing residential, commercial, and other nonresidential urban land uses. In general, this territory consists of areas of high population density and urban land use resulting in a representation of the "urban footprint." There are two types of urban areas: urbanized areas (UAs) that contain 50,000 or more people and urban clusters (UCs) that contain at least 2,500 people, but fewer than 50,000 people (except in the U.S. Virgin Islands and Guam which each contain urban clusters with populations greater than 50,000). Each urban area is identified by a 5-character numeric census code that may contain leading zeroes.The universe of regulated small municipal separate storm sewer systems (MS4s) in urbanized areas expands every 10 years, according to the 1999 stormwater Phase II final rule. A “small MS4” is any MS4 not already covered under Phase I of the NPDES stormwater program. The expansion is based on the U.S. Census Bureau’s definition of “urbanized area.”Census Bureau maps of 2010 urbanized areas can be used by: - permitting authorities to determine which new MS4s are located in each 2010 urbanized area and require coverage under an MS4 permit, - regulated MS4s to determine which parts of their jurisdiction are located in a 2010 urbanized area where the MS4 program applies, and - others interested parties to access regional PDF maps that depict urbanized areas across the United States.
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Description: The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. After each decennial census, the Census Bureau delineates urban areas that represent densely developed territory, encompassing residential, commercial, and other nonresidential urban land uses. In general, this territory consists of areas of high population density and urban land use resulting in a representation of the "urban footprint." There are two types of urban areas: urbanized areas (UAs) that contain 50,000 or more people and urban clusters (UCs) that contain at least 2,500 people, but fewer than 50,000 people (except in the U.S. Virgin Islands and Guam which each contain urban clusters with populations greater than 50,000). Each urban area is identified by a 5-character numeric census code that may contain leading zeroes.The universe of regulated small municipal separate storm sewer systems (MS4s) in urbanized areas expands every 10 years, according to the 1999 stormwater Phase II final rule. A “small MS4” is any MS4 not already covered under Phase I of the NPDES stormwater program. The expansion is based on the U.S. Census Bureau’s definition of “urbanized area.”Census Bureau maps of 2020 urbanized areas can be used by:- permitting authorities to determine which new MS4s are located in each 2020 urbanized area and require coverage under an MS4 permit,- regulated MS4s to determine which parts of their jurisdiction are located in a 2020 urbanized area where the MS4 program applies, and- others interested parties to access regional PDF maps that depict urbanized areas across the United States.
Description: 100/200 scale planimetric mapping features based on 2014 100 scale photography.Updates were subsequently performed by comparing with three inch resolution ortho-rectified aerial imagery collected in 2019 for the eastern half of the County and in 2020 for the western half of the County.
Copyright Text: 100/200 Scale Planimetric Mapping acquired and processed by The Atlantic Group under contract to the City of Mobile, Mobile Gas Service Corp., Mobile Area Water and Sewer System and Mobile County Revenue Commission.
2020-2021 Planimetric Updates were processed by The Atlantic Group under contract to the City of Mobile, Mobile Area Water and Sewer System and the Mobile County Commission. Imagery for the planimetric updates was shared by the Mobile County Revenue Commission.