Big Ten Academic Alliance Geospatial Discovery Portal

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461.
Raster

Imagery 2017 9 inch - Tile Index: Allegheny County, Pennsylvania

2017. Tile Index - Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for c...

462.
Vector Created with Sketch.

Imagery 2017: Penn State Campus: Pennsylvania

2017. Penn State Campus Imagery (caputured in 2017) includes Agricultural Research Center at Rock Springs.

463.
Vector Created with Sketch.

Imagery Acquisition Flight Information - Control Points: Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.Ground control points are necessary for achieving the req...

464.
Imagery: Linn County, Iowa, 2000

Imagery: Linn County, Iowa, 2000

2000. Linn County Iowa GIS. Linn County, Iowa 2000 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 6-inchPixel Resolution (rural): 12-inchM...

465.
Imagery: Linn County, Iowa, 2005

Imagery: Linn County, Iowa, 2005

2005. Linn County Iowa GIS. Linn County, Iowa 2005 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 6-inchPixel Resolution (rural): 6-inchMo...

466.
Imagery: Linn County, Iowa, 2008

Imagery: Linn County, Iowa, 2008

2008. Linn County Iowa GIS. Linn County, Iowa 2008 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 6-inchPixel Resolution (rural): 6-inchMo...

467.
Imagery: Linn County, Iowa, 2009

Imagery: Linn County, Iowa, 2009

2009. Linn County Iowa GIS. Linn County, Iowa 2009 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 4-6-inchPixel Resolution (rural): 12-inc...

468.
Imagery: Linn County, Iowa, 2010

Imagery: Linn County, Iowa, 2010

2010. Linn County Iowa GIS. Linn County, Iowa 2010 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 24-inchPixel Resolution (rural): 24-inch...

469.
Imagery: Linn County, Iowa, 2011

Imagery: Linn County, Iowa, 2011

2011. Linn County Iowa GIS. Linn County, Iowa 2011 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 4-inchPixel Resolution (rural): 12-inchM...

470.
Imagery: Linn County, Iowa, 2014

Imagery: Linn County, Iowa, 2014

2014. Linn County Iowa GIS. Linn County, Iowa 2014 image service.Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 4-inchPixel Resolution (rural): 9-inchMo...

471.
Imagery: Linn County, Iowa, 2017

Imagery: Linn County, Iowa, 2017

2017. Linn County Iowa GIS. Linn County, Iowa 2017 image service. Imagery Layer DetailsUpdate Frequency: NeverPixel Resolution (urban): 3-inchPixel Resolution (rural): 6-inchM...

472.
Raster

Impervious Change - Central Appalachian Forest Ecoregion: Pennsylvania

2010. This raster dataset has been created by calculating the average of impervious surface for the small watersheds for years 1985 and 2000. The differe...

473.
Raster

Impervious Change - High Allegheny Plateau Ecoregion: Pennsylvania

2010. This raster dataset has been created by calculating the average of impervious surface for the small watersheds for years 1985 and 2000. The differe...

474.
Raster

Impervious Cover - Central Appalachian Forest Ecoregion: Pennsylvania

2010. This raster dataset has been created using the attribute field "Value" from the "Impervious Surface Area for Southeast Pennsylvania, 2000" data as ...

475.
Raster

Impervious Cover - High Allegheny Plateau Ecoregion: Pennsylvania

2010. This raster dataset has been created using the attribute field "Value" from the "Impervious Surface Area for Southeast Pennsylvania, 2000" data as ...

476.
Raster

Impervious Cover Change 1985-2000: Pennsylvania

2006. This raster dataset has been created by calculating the average of impervious surface for the small watersheds for years 1985 and 2000. The differe...

477.
Raster

Impervious Cover year 1985: Pennsylvania

2006. This raster dataset has been created using the attribute field "Value" from the "Impervious Surface Area for Southeast Pennsylvania, 1985" data as ...

478.
Raster

Impervious Cover year 2000: Pennsylvania

2006. This raster dataset has been created using the attribute field "Value" from the "Impervious Surface Area for Southeast Pennsylvania, 2000" data as ...

479.
Raster

Important Bird Areas - Central Appalachian Forest Ecoregion

2010. This raster dataset has been created using the "Important Bird Areas" as originated by the Pennsylvania Audubon Society. All areas designated as co...

480.
Raster

Important Bird Areas - High Allegheny Plateau Ecoregion

2010. This raster dataset has been created using the "Important Bird Areas" as originated by the Pennsylvania Audubon Society. All areas designated as co...