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You searched for: Resource Type Raster data Remove constraint Resource Type: Raster data Time Period 1950-1999 Remove constraint Time Period: 1950-1999

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3.

Aerial Photography Counties: Iowa, 1950s Datasets datasets university-of-iowa

1950. Iowa Department of Natural Resources. 1950s Aerial Photography of Iowa County dataset in a zipped file. State of Iowa.

4.

Aerial Photography Counties: Iowa, 1960s Datasets datasets university-of-iowa

1960. Iowa Department of Natural Resources. 1960s Aerial Photography of Iowa County Dataset in a zipped file. State of Iowa.

5.

Aerial Photography Counties: Iowa, 1970s Datasets datasets university-of-iowa

1970. Iowa Department of Natural Resources. 1970s Aerial Photography of Iowa Each zip file contains a county raster dataset. State of Iowa.

8.
Datasets datasets

Chesapeake Bay Watershed Land Cover Data Series 1984 Datasets datasets pennsylvania-state-university

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... State of Pennsylvania.

9.
Datasets datasets

Chesapeake Bay Watershed Land Cover Data Series 1992 Datasets datasets pennsylvania-state-university

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... State of Pennsylvania.

10.

CIR Aerial Photography Counties: Iowa, 1980s Datasets datasets university-of-iowa

1980. Iowa Department of Natural Resources. 1980s Color-Infra-Red Aerial Photography of Iowa Each zip file contains a County-wide dataset. State of Iowa.

11.
Datasets datasets

DEM (30m), Wisconsin 1998 Datasets datasets university-of-wisconsin-madison

1998. This Grid-format Digital Elevation Model (DEM) is a raster representation of land elevation of Wisconsin. This DEM ('demgw930') is derived from the...

12.
Datasets datasets

Digital Elevation Model - 10-Meter: Pennsylvania Datasets datasets pennsylvania-state-university

1996. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard... State of Pennsylvania.

13.
Datasets datasets

Digital Elevation Model - 30-Meter: Pennsylvania Datasets datasets pennsylvania-state-university

1996. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard... State of Pennsylvania.

14.

Digital Elevation Model (DEM) at 1:250,000 [Illinois] Datasets datasets university-of-illinois-urbana-champaign

1995. Abert, Curtis C. A digital elevation model (DEM) in ArcINfo grid format. Data were assembled to provide a statewide database of surface elevation points suitable fo... Illinois State Geological Survey.

15.
Imagery imagery

Digital Orthophoto (DOQQ - quarter-quadrangle) for Delaware 1992 Imagery imagery pennsylvania-state-university

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 ... State of Pennsylvania.

16.
Imagery imagery

Digital Orthophoto (DOQQ - quarter-quadrangle) for Delaware 1997 Imagery imagery pennsylvania-state-university

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 ... State of Pennsylvania.

17.
Imagery imagery

Digital Orthophoto (DOQQ - quarter-quadrangle) for West Virginia 1997 Imagery imagery pennsylvania-state-university

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 ... State of Pennsylvania.

18.

Digital Orthophoto Quadrangle (DOQ) Data [Illinois] (1998 - 2001) university-of-illinois-urbana-champaign

1998. U.S. Geological Survey. Illinois National Aerial Photography Program (NAPP) Digital Orthophotography quarter Quadrangle (DOQ) data have been created for 102 counties in th... Illinois State Geological Survey.

19.
Imagery imagery

Digital Orthophoto Quarter Quadrangle images for Pennsylvania Imagery imagery pennsylvania-state-university

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 ... State of Pennsylvania.

20.
Imagery imagery

Digital Orthophoto Quarter Quadrangle images for Pennsylvania Imagery imagery pennsylvania-state-university

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 ... State of Pennsylvania.

21.
Datasets datasets

Impervious surface area for Northeast Pennsylvania, 1985 Datasets datasets pennsylvania-state-university

1985. Toby Carlson, Penn State University. Impervious surface area for Pennsylvania was estimated from Thematic Mapper data using algorithms developed by Dr. Toby Carlson. The Value attribut... The Pennsylvania State University.

22.
Datasets datasets

Impervious surface area for Northwest Pennsylvania, 1985 Datasets datasets pennsylvania-state-university

1985. Toby Carlson, Penn State University. Impervious surface area for Pennsylvania was estimated from Thematic Mapper data using algorithms developed by Dr. Toby Carlson. The Value attribut... The Pennsylvania State University.

23.
Datasets datasets

Impervious surface area for Southeast Pennsylvania, 1985 Datasets datasets pennsylvania-state-university

1985. Toby Carlson, Penn State University. Impervious surface area for Pennsylvania was estimated from Thematic Mapper data using algorithms developed by Dr. Toby Carlson. The Value attribut... The Pennsylvania State University.

24.
Datasets datasets

Impervious surface area for Southwest Pennsylvania, 1985 Datasets datasets pennsylvania-state-university

1985. Toby Carlson, Penn State University. Impervious surface area for Pennsylvania was estimated from Thematic Mapper data using algorithms developed by Dr. Toby Carlson. The Value attribut... The Pennsylvania State University.

25.
Datasets datasets

Land Cover Change in Iowa from 1984 - 2003 Datasets datasets university-of-iowa

1984. 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... State of Iowa.

26.
Datasets datasets

Land Cover Change in Iowa from 1990 - 2003 Datasets datasets university-of-iowa

1990. Change Detection GRID for the period 1990 to 2002 in the State of Iowa developed from Landsat Imagery. State of Iowa.

27.

Land Cover of the State of Iowa in the Years 1984-86 Datasets datasets university-of-iowa

1984. Iowa Department of Natural Resources. Land Cover of Iowa in From 1984 to 2003 This zip file contains a 15-meter ESRI GRID of the Land Cover of Iowa. State of Iowa.

28.
Datasets datasets

Land Cover of the State of Iowa in the Years 1989-91 Datasets datasets university-of-iowa

1989. Land cover / Land use classification of the Iowa landscape derived from satellite imagery collected between 1989 and 1991. This zip file is a 15 m... State of Iowa.

29.
Datasets datasets

Land Cover Persistence from 1984-2003: Iowa Datasets datasets university-of-iowa

1984. Persistence of Land Cover Classes for the State of Iowa in the Years 1984-2002 This zip file contains a 15-meter raster dataset (ESRI GRID). State of Iowa.

30.
Datasets datasets

National Land Cover Dataset 1992 - Pennsylvania; Albers GeoTIFF Datasets datasets pennsylvania-state-university

1999. United States Geological Survey (USGS). These data can be used in a geographic information system (GIS) for any number of purposes such as assessing wildlife habitat, water quality, pesti... State of Pennsylvania.

31.
Datasets datasets

National Land Cover Dataset 1992 - Pennsylvania; Albers Grid Datasets datasets pennsylvania-state-university

1999. United States Geological Survey (USGS). These data can be used in a geographic information system (GIS) for any number of purposes such as assessing wildlife habitat, water quality, pesti... State of Pennsylvania.

33.

Shaded Relief map [Illinois] university-of-illinois-urbana-champaign

1995. Abert, Curtis C. Landforms of Illinois with a shaded relief portrayal. Derived from USGS Digital Elevation Model(DEM) data. Illustrates various Illinois landforms i... Illinois State Geological Survey.

34.
Datasets datasets

Topographic Maps (DRG) for Pennsylvania 1:100,000 - UTM Datasets datasets pennsylvania-state-university

1996. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t... State of Pennsylvania.

36.
Datasets datasets

Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM Datasets datasets pennsylvania-state-university

1996. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t... State of Pennsylvania.

37.
Datasets datasets

Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM - cropped collars Datasets datasets pennsylvania-state-university

1996. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t... State of Pennsylvania.

38.
Datasets datasets

Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM - NAD 1983 Datasets datasets pennsylvania-state-university

1996. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t... State of Pennsylvania.

40.
Datasets datasets

Topographic Maps (DRG) for Pennsylvania 1:250,000 - UTM Datasets datasets pennsylvania-state-university

1996. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t... State of Pennsylvania.

41.
Datasets datasets

WISCLAND Land Cover, Wisconsin 1998 (Grid) Datasets datasets university-of-wisconsin-madison

1998. Wisconsin Department of Natural Resources. This Grid-format data set, known as WISCLAND Land Cover, is a raster representation of land cover of Wisconsin derived from Landsat satellite image...

42.
Datasets datasets

WISCLAND Land Cover, Wisconsin 1998 (Image) Datasets datasets university-of-wisconsin-madison

1998. Wisconsin Department of Natural Resources. This tif-format data image of Wisconsin Land Cover illustrates the Level 2 land cover classification encoded in the Wisconsin Land Cover Grid. The ...