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You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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17.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1950s

1950. Iowa Department of Natural Resources. Zipped file Contains a dateset of the centroids, with dates, of the individual images used.

19.
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Aerial Photography Dates: Iowa, 1970s

1970. Iowa Department of Natural Resources. This shapefile has centroids with dates of all images used in this dataset.

21.
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Anoka County GIS Data Downloads

1970-2019. Transportation Division, GIS Department. The Anoka County, Minnesota website GIS page provides an FTP service link for geospatial data download access. Geospatial datasets are available fo...

23.
Raster

Chesapeake Bay Watershed Land Cover Data Series 1984

1984. United States Geological Survey (USGS). To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

24.
Raster

Chesapeake Bay Watershed Land Cover Data Series 1992

1992. United States Geological Survey (USGS). To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

27.
Raster

Digital Orthophoto (DOQQ - quarter-quadrangle) for Delaware 1992

1992. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...

28.
Raster

Digital Orthophoto (DOQQ - quarter-quadrangle) for Delaware 1997

1997. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...

32.
Raster

Digital Orthophoto Quarter Quadrangle images for Pennsylvania

1999. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...

33.
Raster

Digital Orthophoto Quarter Quadrangle images for Pennsylvania

1993. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...

36.
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GIS Downloads for Putnam County, Ohio

1995-present. Putnam County GIS Office. Website containing downloadable shapefiles for parcels, addresses, transportation, boundaries, hydrology, geology, and more. Also contains 1995-201...

46.
Raster

Land Cover Change in Iowa from 1984 - 2003

1984-2003. Change Detection GRID for the period 1985 to 2002 in the State of Iowa developed from Landsat Imagery. This zip file contains a raster dataset (ESR...

51.
Land Use for Clearwater and Beltrami Counties, 1986: Minnesota

Land Use for Clearwater and Beltrami Counties, 1986: Minnesota

1986. Department of Geography, Bemidji State University, Clearwater Soil and Water Conservation District (SWCD), and Beltrami Soil and Water Conservation District. An updated raster version of land use was created for Clearwater and Beltrami Counties in 1987, based on 1986 aerial photography. The original Lan...

64.
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PA Explorer: Terrabyte Image: Pennsylvania

1998. Wayne Myers. The Terrabyte images are extractives from Landsat Thematic Mapper images through the SpectraPlex process. This process does not permit the full res...

65.
Polygon

Streams and Shorelines: Illinois, 2004

1994. Illinois Department of Natural Resources and Illinois State Geological Survey. This dataset contains data representing streams and shorelines in Illinois and portions of surrounding states as derived from US Geological Survey ...

73.
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Will County Data

1961-2019. Will County GIS. Geospatial datasets are publicly available on the Will County, IL website GIS Division page linked here. The page provides access to zipped downloa...