Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Vector Created with Sketch.

104 State Water Plan Watersheds: Pennsylvania


1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,...
2.
Paper Map

[1970 census enumeration district and census tract map of Monroe County, Indiana].


1970?. Title supplied by cataloger.; Blue line print.; Base map: General Highway and transportation map, Monroe County, Indiana / prepared by the Indiana ...
3.
Paper Map

32,000 to vote in 29 precincts here: [Bloomington, Ind.].


1966. From Daily Herald-Telephone, Bloomington, Indiana, November 4, 1966.; Map shows voting precincts inside the City of Bloomington, Indiana, and inclu...
4.
Paper Map

7th congressional district of Indiana, 1972.


1972. Boundaries of 7th Congressional District of Indiana in 1972 drawn on a copy of "Counties and townships" map, p. 10 of Kingsbury, Robert C., An atla...
6.
Paper Map

Abandoned railroads of Indiana.


1960?. Pen and ink.; Base map: Geological Survey (U.S.). State of Indiana, Scale 1:500,000, Washington, D.C., 1950. Scale approximately 1:2,027,520.
7.
Vector Created with Sketch.

Active Railroads: Pennsylvania


1996. Environmental Resources Research Institute. Location of active rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable mylar base.
8.
Vector Created with Sketch.

Advisory Neighborhood Commission: Washington, D.C., 1990


1990. District of Columbia GIS Program. Advisory Neighborhood Commission (ANC) polygons. This dataset contains polygons representing ANC boundaries in 1990C. Office of the Chief Technolog...
9.
Aerial gamma radiation in Minnesota and adjacent areas of North Dakota and South Dakota, M-83

Aerial gamma radiation in Minnesota and adjacent areas of North Dakota and South Dakota, M-83


1996. Lively, R.S. and Morey, G.B. Maps showing general Quaternary age surface geology of Minnesota and distribution of uranium, thorium and potassium-40 in surface sediments, scale ...
10.
Aerial Imagery: Hennepin County, Minnesota, 1953

Aerial Imagery: Hennepin County, Minnesota, 1953


1953. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County captured during the fall of 1953.
11.
Aerial Imagery: Hennepin County, Minnesota, 1957

Aerial Imagery: Hennepin County, Minnesota, 1957


1957. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County captured during the spring of 1957.
12.
Aerial Imagery: Hennepin County, Minnesota, 1964

Aerial Imagery: Hennepin County, Minnesota, 1964


1964. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County captured during the fall of 1964.
13.
Aerial Imagery: Hennepin County, Minnesota, 1969

Aerial Imagery: Hennepin County, Minnesota, 1969


1969. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County from 1969.
14.
Aerial Imagery: Hennepin County, Minnesota, 1988

Aerial Imagery: Hennepin County, Minnesota, 1988


1988. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of the City of Minneapolis captured during the spring of 1988.
15.
Aerial Imagery: Hennepin County, Minnesota, 1989

Aerial Imagery: Hennepin County, Minnesota, 1989


1989. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of western Hennepin County captured during the spring of 1989.
16.
Raster
17.
Raster

Aerial Photography 1996: Philadephia, Pennsylvania


1996. Philadelphia aerial photography.
18.
Aerial Photography: Carver County, Minnesota, 1991

Aerial Photography: Carver County, Minnesota, 1991


1991. CarverGIS. Carver County 2011 Imagery.
19.
Aerial Photography Counties: Iowa, 1950s

Aerial Photography Counties: Iowa, 1950s


1950. Iowa Department of Natural Resources. 1950s Aerial Photography of Iowa County dataset in a zipped file.
20.
Aerial Photography Counties: Iowa, 1960s

Aerial Photography Counties: Iowa, 1960s


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