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Big Ten Academic Alliance Geoportal

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You searched for: Place Washington, D.C., United States Remove constraint Place: Washington, D.C., United States Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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Alleys: Washington, D.C., 1999

1999. Alley centerlines captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washin...

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Baist Index (1959): Washington, D.C., United States

1959. The Baist Index provides a mapping index that mirrors the hardcopy index in the original Baist Map Volumes. The Index was hand digitized from the o...

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Bridge and Tunnel Entrances: Washington, D.C., 1999

1999. Bridges, overpasses, tunnel entrances, and underpasses captured in 1999. This dataset was collected as part of the planimetric mapping project. Hid...

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Bridges and Tunnels: Washington, D.C., 1999

1999. Hidden bridges and tunnels captured in 1999. This is a new dataset that was not collected as part of the planimetric mapping project. It shows brid...

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Building Footprints: Washington, D.C., 1999

1999. Buildings captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washington DC ...

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Building Heights: Washington, D.C., 1999

1999. Rooftop elevation captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washin...

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Census Tracts by Population - 1990: Washington, D.C.

1990. Census Year 1990 Tract Polygons. This dataset contains polygon features, created as part of the DC Geographic Information System (DC GIS) for the D...

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Census Tracts: Washington, D.C., 1950

1950. Census Year 1950 Census Tracts. The dataset contains polygons representing CY 1950 census tractsC. Geographic Information System (DC GIS) for the D...

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Census Tracts: Washington, D.C., 1960

1960. Census Year 1960 Census Tracts. The dataset contains polygons representing CY 1960 census tractsC. Geographic Information System (DC GIS) for the D...

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Census Tracts: Washington, D.C., 1970

1970. Census Year 1970 Census Tracts. The dataset contains polygons representing CY 1970 census tractsC. Geographic Information System (DC GIS) for the D...

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Census Tracts: Washington, D.C., 1980

1980. Census Year 1980 Census Tracts. The dataset contains polygons representing CY 1980 census tractsC. Geographic Information System (DC GIS) for the D...

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Census Tracts: Washington, D.C., 1990

1990. Census Year 1990 Tract Polygons. This dataset contains polygon featuresC. Office of the Chief Technology Officer (OCTO) and participating D.C. gove...

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Curbs: Washington, D.C., 1999

1999. Curbs captured in 1999. This dataset was collected as part of the planimetric mapping project. Hidden features were added as enhancements to this d...

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Driveways: Washington, D.C., 1999

1999. Drive centerlines captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washin...

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Electrical Substations: Washington, D.C., 1999

1999. Electric sub stations captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Wa...

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Elevation Points: Washington, D.C., 1999

1999. Elevation captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washington DC ...

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Fire Hydrants: Washington, D.C., 1999

1999. Fire Hydrants captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washington...

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Floodplains from 1985: Washington, D.C.

1985. Floodplains from 1985. The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Progr...

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Hidden Roads: Washington, D.C., 1999

1999. Hidden roads captured in 1999. This is a new dataset that was not collected as part of the planimetric mapping project. It was created to enhance e...

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Hidden Sidewalks: Washington, D.C., 1999

1999. Hidden sidewalks captured in 1999. This is a new dataset that was not collected as part of the planimetric mapping project. It was created to enhan...