translation missing: en.geoblacklight.aria-labels.university-of-minnesota
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translation missing: en.geoblacklight.aria-labels.university-of-illinois-urbana-champaign
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3.
vector

Aerial Photography Dates: Iowa, 1950s university-of-iowa

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

5.
vector

Aerial Photography Dates: Iowa, 1970s university-of-iowa

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

6.

Buried Bedrock Surface: Illinois, 2004 university-of-illinois-urbana-champaign

1994. Herzog, B.L.. B.J. Stiff, C.A. Chenoweth, K.L. Warner, J.B. Sievering, C. Avery. The Buried Bedrock Surface of Illinois map represents the first revision of the bedrock topography map since the second edition was published by th...

8.
raster

Coastal Land Cover, Wisconsin 2016 university-of-wisconsin-madison

2016. National Oceanic and Atmospheric Administration (NOAA). The NOAA Coastal Change Analysis Program (C-CAP) produces national standardized land cover and change products for the coastal regions of the U.S. ...

9.

County Boundaries: Illinois, 2003 university-of-illinois-urbana-champaign

1968-1979. Illinois State Geological Survey. This data set contains Illinois county boundaries in line and polygon formats. The polygon attribute data include county name and number (FIPS) des...

14.
raster

DOQQ 1998: Indiana purdue-university

1998. IndianaMap ArcGIS Online. 1998-99 Aerial Photos (USGS DOQQs), (1:12,000) - Shows the 1998-1999 Digital Orthophoto Quarter Quadrangle (DOQQ) imagery of Indiana, produced by ...

15.

Driftless Areas: Illinois, 2004 university-of-illinois-urbana-champaign

1994. Illinois State Geological Survey. This is a polygon feature class containing driftless areas in Illinois. These areas are analogous to areas of the state where the bedrock surface i...

19.

Four-Band Aerial Photography of Iowa: Iowa, 2007 university-of-iowa

2007. Iowa Department of Natural Resources. 2007, 2009, and 2010 Four-Band Aerial Photography of Iowa Downloads include seperate CIR and color rasters of Iowa Counties flown in 2007.

22.

Glacial Drift: Thickness and Character: Illinois, 2004 university-of-illinois-urbana-champaign

1994. Illinois State Geological Survey. This is an SDE feature dataset showing drift thickness in Illinois. Data are originally from ISGS Circular 490 by Piskin and Bergstrom (1975), Plat...