Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Public Land Survey System (PLSS) Boundaries: Illinois, 2003

Public Land Survey System (PLSS) Boundaries: Illinois, 2003

1968-1979. Illinois State Geological Survey. This data set contains Illinois Public Land Survey System (PLSS) boundaries and designations in line and polygon feature classes. THESE DATA HAVE P...

2.
PLSS Townships: Illinois, 2003

PLSS Townships: Illinois, 2003

1968-1979. Illinois State Geological Survey. This dataset contains townships from the Illinois Public Land Survey System in line and polygon form. Line attributes identify state, township and ...

3.
Vector Created with Sketch.

Public Schools In Abandoned Coal Mine Counties: Pennsylvania

2009. The Pennsylvania State University. This data-set contains public schools only for those counties that have abandoned coal mines. This data-set portrays the approximate location of Pu...

4.
PLSS Indian Treaty Boundary Lines: Illinois, 2003

PLSS Indian Treaty Boundary Lines: Illinois, 2003

1968-1979. Illinois State Geological Survey. This data set contains Indian Treaty boundary lines from the Illinois Public Land Survey System. The nominal scale is 1:62,500. As of 2003, the dat...

5.
Twin Cities Historical Surface Waters Based on Original Public Land Survey Maps, 1848 - 1858

Twin Cities Historical Surface Waters Based on Original Public Land Survey Maps, 1848 - 1858

1848-1858. Graves, Richard, Strong, Richard, Mattke, Ryan, Kne, Len, Shepard, Coleman, and Kernik, Melinda. These shapefiles of lakes, streams, wetlands, river bottoms, and the Mississippi River represent the hydrological landscape of Minneapolis and St. ...

6.
Vector Created with Sketch.

Landscape Ecology and Green Infrastructure: Allegheny County, Pennsylvania

2006. The 3 Rivers 2nd Nature project was directed by artists/researchers Tim Collins and Reiko Goto. The project addressed the meaning, form, and functi...

7.
Mixed

Structural Features: Illinois, 1995

1995. Illinois State Geological Survey. This feature dataset is a representation of Plate 1 from ISGS Bulletin 100 (1993) by W. John Nelson. Features depicted are limited to well document...

8.
C-40 Geologic Atlas of Wadena County, Minnesota, Surficial Geology Map

C-40 Geologic Atlas of Wadena County, Minnesota, Surficial Geology Map

2015. Lusardi, Barbara A and Minnesota Geological Survey. Completed atlas can be found at http://hdl.handle.net/11299/183206; At this location only the Surficial Geology map PDF is available. See below: Th...

9.
Point image/svg+xml

U.S. Geographic Names Information System (GNIS): Illinois Portion, 2006

1974-2006. United States Geological Survey (USGS) and Illinois State Geological Survey. This metadata document is abstracted from the GNIS metadata provided with the original data, with some ISGS-specific information added. The origina...

10.
Polygon

Stack-Unit Mapping of Geologic Materials to a Depth of 15 Meters: Illinois, 2004

1995. Illinois State Geological Survey. This is an SDE polygon feature class containing stack-unit map designations for Illinois. The primary source is ISGS Circular 542, Stack-unit Mappi...

11.
Mixed

High-Resolution Land Cover Chesapeake Bay Watershed - Delaware

2016. High-resolution land cover dataset for the Commonwealth of Pennsylvania. Twelve land cover classes were mapped:0 - Background1 - Water2 - Emergent ...

12.
Mixed

High-Resolution Land Cover, Commonwealth of Pennsylvania, Chesapeake Bay Watershed and Delaware River Basin, 2013

2016. High-resolution land cover dataset for the Commonwealth of Pennsylvania. Twelve land cover classes were mapped:0 - Background1 - Water2 - Emergent ...

13.
Polygon

Historic County Boundaries and Total Population: United States, 1800

1800. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

14.
Polygon

Historic County Boundaries and Total Population: United States, 1810

1810. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

15.
Polygon

Historic County Boundaries and Total Population: United States, 1820

1820. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

16.
Polygon

Historic County Boundaries and Total Population: United States, 1830

1830. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

17.
Polygon

Historic County Boundaries and Total Population: United States, 1840

1840. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

18.
Polygon

Historic County Boundaries and Total Population: United States, 1850

1850. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

19.
Polygon

Historic County Boundaries and Total Population: United States, 1860

1860. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...

20.
Polygon

Historic County Boundaries and Total Population: United States, 1870

1870. Minnesota Population Center. This boundary file contains historic county boundaries for which the U.S. Census Bureau tabulated data and was produced by the Minnesota Population...