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.
1:250k Digital Raster Graphic - Collars Removed: Minnesota

1:250k Digital Raster Graphic - Collars Removed: Minnesota

1998. U.S. Geological Survey and Minnesota DNR. A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

3.
1969 traffic map, state of Indiana: 24 hour annual average total traffic

1969 traffic map, state of Indiana: 24 hour annual average total traffic

1969. Insets: Indianapolis -- [New Albany area]. Scale approximately 1:650,000. Prepared by the Division of Planning, Indiana State Highway Commission in...

4.
[1970 census enumeration district and census tract map of Monroe County, Indiana].

[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 ...

5.
32,000 to vote in 29 precincts here: [Bloomington, Ind.].

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...

6.
7th congressional district of Indiana, 1972.

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 atlas ...

7.
A map of Bloomington & Monroe County, Indiana: including Ellettsville & Indiana University

A map of Bloomington & Monroe County, Indiana: including Ellettsville & Indiana University

1989. Includes text, indexes, advertisement, and 10 indexed ancillary subdivision maps. Scales differ. Spectrum; presented by Bank One and Greater Bloomi...

8.
A map of Fort Wayne about 1812: showing also certain earlier happenings

A map of Fort Wayne about 1812: showing also certain earlier happenings

1989, 1933. Brainard, Noble E., cartographer. The area included on the map is about 2 1/2 miles from east to west & 1 7/8 miles north to south.; Includes illustrations and text on the map and a...

9.
A map of Indiana showing its history, points of interest, and the holdings of the Indiana Dept. of Conservation

A map of Indiana showing its history, points of interest, and the holdings of the Indiana Dept. of Conservation

1954. Carter, Lee (Cartographer). Pictorial map. Cited in LC's Trails bibliography, no. 111. Scale 1:600,000. Lee Carter, cartographer, 1932.

11.
Abandoned railroads of Indiana.

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.

12.
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.

13.
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...

14.
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 ...

15.
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.

16.
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.

17.
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.

18.
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.

19.
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.

20.
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.

21.
Raster
22.
Raster

Aerial Photography 1996: Philadephia, Pennsylvania

1996. Philadelphia aerial photography.

23.
Aerial Photography: Carver County, Minnesota, 1991

Aerial Photography: Carver County, Minnesota, 1991

1991. CarverGIS. Carver County 2011 Imagery.

24.
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.

25.
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.

26.
Aerial Photography Counties: Iowa, 1970s

Aerial Photography Counties: Iowa, 1970s

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

27.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1950s

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

28.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1960s

1960. Iowa Department of Natural Resources. This dataset is centroids with dates of the individual images used.

29.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1970s

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

30.
Raster

Aerial Photography: Mifflin County, Pennsylvania

1995. Mifflin County - Laura H. McLaughlin. Aerial Orthophotograph taken on April 5, 1995.

31.
Aeromagnetic anomaly map of Minnesota, S-11

Aeromagnetic anomaly map of Minnesota, S-11

1982. Chandler, Val W. Aeromagnetic anomaly (total magnetic intensity anomaly (relative to the earth's magnetic field, interpretation of magnetic data collected from airb...

32.
Aeromagnetic anomaly map of Minnesota, S-17

Aeromagnetic anomaly map of Minnesota, S-17

1992. Chandler, Val W. Aeromagnetic anomaly (total magnetic intensity anomaly (relative to the earth's magnetic field, interpretation of magnetic data collected from airb...

33.
Aeromagnetic map of Minnesota, Carlton and Pine counties, Plate 1

Aeromagnetic map of Minnesota, Carlton and Pine counties, Plate 1

1983. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected...

34.
Aeromagnetic map of Minnesota, Carlton and Pine counties, Plate 2

Aeromagnetic map of Minnesota, Carlton and Pine counties, Plate 2

1983. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

35.
Aeromagnetic map of Minnesota, central region, Plate 1

Aeromagnetic map of Minnesota, central region, Plate 1

1985. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected...

36.
Aeromagnetic map of Minnesota, central region, Plate 2

Aeromagnetic map of Minnesota, central region, Plate 2

1985. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

37.
Aeromagnetic map of Minnesota, Cook and Lake counties, Plate 1

Aeromagnetic map of Minnesota, Cook and Lake counties, Plate 1

1983. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected...

38.
Aeromagnetic map of Minnesota, Cook and Lake counties, Plate 2

Aeromagnetic map of Minnesota, Cook and Lake counties, Plate 2

1983. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

39.
Aeromagnetic map of Minnesota, east-central region, Plate 1

Aeromagnetic map of Minnesota, east-central region, Plate 1

1983. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected...

40.
Aeromagnetic map of Minnesota, east-central region, Plate 2

Aeromagnetic map of Minnesota, east-central region, Plate 2

1983. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

41.
Aeromagnetic map of Minnesota, north-central region - Angle Inlet and Oak Island quadrangles

Aeromagnetic map of Minnesota, north-central region - Angle Inlet and Oak Island quadrangles

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

42.
Aeromagnetic map of Minnesota, north-central region--Baudette quadrangle

Aeromagnetic map of Minnesota, north-central region--Baudette quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

43.
Aeromagnetic map of Minnesota, north-central region--Bigfork quadrangle

Aeromagnetic map of Minnesota, north-central region--Bigfork quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

44.
Aeromagnetic map of Minnesota, north-central region--Blackduck quadrangle

Aeromagnetic map of Minnesota, north-central region--Blackduck quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

45.
Aeromagnetic map of Minnesota, north-central region--Fosston quadrangle

Aeromagnetic map of Minnesota, north-central region--Fosston quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

46.
Aeromagnetic map of Minnesota, north-central region--Grygla quadrangle

Aeromagnetic map of Minnesota, north-central region--Grygla quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

47.
Aeromagnetic map of Minnesota, north-central region--Little Fork and International Falls quadrangles

Aeromagnetic map of Minnesota, north-central region--Little Fork and International Falls quadrangles

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

48.
Aeromagnetic map of Minnesota, north-central region--Roseau quadrangle

Aeromagnetic map of Minnesota, north-central region--Roseau quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

49.
Aeromagnetic map of Minnesota, north-central region--Upper Red Lake quadrangle

Aeromagnetic map of Minnesota, north-central region--Upper Red Lake quadrangle

1998. Chandler, Val W. and Lively, R.S. Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines...

50.
Aeromagnetic map of Minnesota, northwestern region, Plate 1

Aeromagnetic map of Minnesota, northwestern region, Plate 1

1989. Chandler, Val W. Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected...