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.
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...

3.
[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 ...

4.
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...

5.
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 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.

10.
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.

11.
Academy Gletscher: Greenland

Academy Gletscher: Greenland

1953. Projection: Polar Stereographic Projection; Series: AMS C501 Greenland 1:250,000 Topographic Series.

12.
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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.
Image

Adelaide Island: World Aeronautical Chart

1959. Aeronautical Chart and Information Center.

14.
Image

Admiralty Range: World Aeronautical Chart

1959. Aeronautical Chart and Information Center.

15.
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 ...

16.
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Aerial Imagery (Doq) Grid: Michigan, 1992-1998

1992-1998. State of Michigan. Digital Ortho-Quadrangle grid for 1992 1998 aerial imagery acquisitions.

17.
Aerial Imagery: DuPage County, Illinois, 1956

Aerial Imagery: DuPage County, Illinois, 1956

1956. DuPage County Illinois. Aerial Imagery of DuPage County: 1956 (For reference only not to any scale).

18.
Aerial Imagery: DuPage County, Illinois, 1978

Aerial Imagery: DuPage County, Illinois, 1978

1978. DuPage County Illinois. Aerial Imagery of DuPage County: 1978.

19.
Aerial Imagery: DuPage County, Illinois, 1998

Aerial Imagery: DuPage County, Illinois, 1998

1998. DuPage County Illinois. DuPage County Black and White Ortho Imagery: 1998.

20.
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Aerial Imagery Index Grid, 12-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

21.
Vector Created with Sketch.

Aerial Imagery Index Grid, 1-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

22.
Vector Created with Sketch.

Aerial Imagery Index Grid, 3-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

23.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1965

1965. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

24.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1968

1968. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

25.
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Aerial Imagery Index Points: Prince George's County, Maryland, 1972

1972. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

26.
Raster
27.
Raster

Aerial Photography 1996: Philadephia, Pennsylvania

1996. Philadelphia aerial photography.

28.
Aerial Photography: Carver County, Minnesota, 1991

Aerial Photography: Carver County, Minnesota, 1991

1991. Carver County, Minnesota. Carver County 2011 Imagery.

29.
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.

30.
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.

31.
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.

32.
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.

33.
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.

34.
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Aerial Photography Dates: Iowa, 1970s

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

35.
Raster

Aerial Photography: Mifflin County, Pennsylvania

1995. Mifflin County - Laura H. McLaughlin. Mifflin County aerial photography.

36.
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...

37.
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...

38.
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...

39.
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...

40.
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...

41.
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...

42.
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...

43.
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...

44.
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...

45.
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...

46.
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...

47.
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...

48.
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...

49.
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...

50.
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...

51.
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...

52.
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...

53.
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...

54.
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...

55.
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...

56.
Aeromagnetic map of Minnesota, northwestern region, Plate 2

Aeromagnetic map of Minnesota, northwestern region, Plate 2

1989. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

57.
Aeromagnetic map of Minnesota, southeastern region, Plate 1

Aeromagnetic map of Minnesota, southeastern region, Plate 1

1991. 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...

58.
Aeromagnetic map of Minnesota, southeastern region, Plate 2

Aeromagnetic map of Minnesota, southeastern region, Plate 2

1991. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

59.
Aeromagnetic map of Minnesota, southwestern region, Plate 1

Aeromagnetic map of Minnesota, southwestern 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...

60.
Aeromagnetic map of Minnesota, southwestern region, Plate 2

Aeromagnetic map of Minnesota, southwestern region, Plate 2

1989. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

61.
Aeromagnetic map of Minnesota, St Louis county, Plate 1

Aeromagnetic map of Minnesota, St Louis county, 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...

62.
Aeromagnetic map of Minnesota, St Louis county, Plate 2

Aeromagnetic map of Minnesota, St Louis county, 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...

63.
Aeromagnetic map of Minnesota, west-central region, Plate 1

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

1987. 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...

64.
Aeromagnetic map of Minnesota, west-central region, Plate 2

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

1987. Chandler, Val W. Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (line...

65.
66.
67.
Vector Created with Sketch.

Aggregate Resources 1997, 2020 and 2040: Minnesota

1997-2040. The Aggregate Resources (sand, gravel and limestone and dolomite) dataset contains three separate shape files for aggregate resources for 1997, 202...

68.
Aggregate resources inventory, Twin Cities Metropolitan Area, Minnesota, IC-20, Plate 1

Aggregate resources inventory, Twin Cities Metropolitan Area, Minnesota, IC-20, Plate 1

1984. Meyer, Gary N. and Jirsa, Mark A. Sand and gravel aggregate resources, geologic map units, seven county metropolitan area, Minnesota, scale 1:250,000.

69.
Aggregate resources inventory, Twin Cities Metropolitan Area, Minnesota, IC-20, Plate 2

Aggregate resources inventory, Twin Cities Metropolitan Area, Minnesota, IC-20, Plate 2

1984. Meyer, Gary N. and Jirsa, Mark A. Bedrock (crushed rock) aggregate resources, geologic map units, seven county metropolitan area, Minnesota, scale 1:250,000.

70.
Agricultural Production by Type: Ecological Study for the Twin-Cities Metropolitan Area

Agricultural Production by Type: Ecological Study for the Twin-Cities Metropolitan Area

1968. Map of Agricultural Production by Type prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area...

71.
Vector Created with Sketch.

Agricultural security areas: Pennsylvania

1996. Penn State ORSER/ERRI. Agricultural security areas from LLRWS data.

72.
Agriculture Census: Indiana

Agriculture Census: Indiana

1997. United States Geological Survey and Bernardin-Lochmueller & Associates. USGS National Atlas metadata states "This data set portrays the National Agricultural Statistics Service, U.S. Department of Agriculture's 1997 Ce...

73.
Airdevronsix Icefalls: Antarctica

Airdevronsix Icefalls: Antarctica

1987. Jean-Claude M. Thomas. Projection: Lambert Conformal Conic Projection - Standard Parallels -76°40' and -79°20'; Series: USGS Satellite Image Maps.

74.
Vector Created with Sketch.

Airport Runway and Taxiway 1999: Washington D.C

1999. City of Washington, DC.

75.
Vector Created with Sketch.

Airports: Centre County, Pennsylvania

1995. Centre County Government. Point Feature Class - It was originally captured as part of the 1995 Aerial Imagery project completed by Kimball.

76.
Aitkin County Breeding Owl Records 1973-2014: Minnesota

Aitkin County Breeding Owl Records 1973-2014: Minnesota

1973-2014. Minnesota Department of Natural Resources (DNR). This dataset maps and describes breeding owl observations made by Warren Nelson from 1973-2014.

77.
Alexander Island to Square Bay Including Marguerite Bay: Antarctica

Alexander Island to Square Bay Including Marguerite Bay: Antarctica

1983. Projection: WGS72 Mercator Projection; Series: Defense Mapping Agency Nautical Charts.

78.
Alexandra Mountains: Antarctica

Alexandra Mountains: Antarctica

1969. Projection: Lambert Conformal Conic Projection: Standard Parallels -76°40' and -79°20'; Series: USGS 1:250,000 Topographic Reconnaissance Series.

79.
Alexandra Mountains: Antarctica

Alexandra Mountains: Antarctica

1977. Wade; Cathey; Oldham. Projection: Lambert Conformal Conic Projection: Standard Parallels -76°40' and -79°20'; Series: USGS 1:250,000 Geologic Reconnaissance Series.

80.
Vector Created with Sketch.

Alleys: Washington, D.C., 1999

1999. City of Washington, DC. Alley centerlines captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washin...

81.
Vector Created with Sketch.

Ambient and fixed station network groundwater monitoring point data (1985 - 1998): Pennsylvania

1999. Pennsylvania Department of Environmental Protection. This coverage represents the point locations and data for 1,106 groundwater quality monitoring points sampled under the PA DEP Fixed Station Networ...

90.
Angmagssalik: Greenland

Angmagssalik: Greenland

1952. Projection: Transverse Mercator Projection; Series: AMS C501 Greenland 1:250,000 Topographic Series.

91.
Annual Precipitation: Ecological Study for the Twin-Cities Metropolitan Area

Annual Precipitation: Ecological Study for the Twin-Cities Metropolitan Area

1968. Map of Annual Precipitation prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:2...

92.
Antarctic Exploration and Claims: As of 1 February 1956: Antarctica

Antarctic Exploration and Claims: As of 1 February 1956: Antarctica

1956. Downloaded from CIA Flickr page: https://www.flickr.com/photos/ciagov/albums/72157674885572481/with/30252922504/; Series: CIA Declassified Maps.

93.
Image

Antarctic Mammals: Folio 18

1974. American Geographical Society.

94.
Image

Antarctic Maps and Surveys 1900-1964; Folio 3

1965. American Geographical Society.

95.
Aquifer Recharge Zones: Ecological Study for the Twin-Cities Metropolitan Area

Aquifer Recharge Zones: Ecological Study for the Twin-Cities Metropolitan Area

1968. Map of Aquifer Recharge Zones prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1...

96.
Table Created with Sketch.

ArcGIS REST Services Directory for Lucas County, Ohio

1998-present. ArcGIS REST site referencing layers for parcels, boundaries, transportation, hydrology, utilities, and more. Also contains references to elevation ...

97.
Vector Created with Sketch.

Archived Land Use Land Cover 1973: Maryland

1973. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.This layer contains land use land cover information for the yea...

98.
Vector Created with Sketch.

Archived Submerged Aquatic Vegetation - Sav 1984: Maryland

1984. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.The Chesapeake Bay SAV Coverage was mapped from 1:24,000 black ...

99.
Vector Created with Sketch.

Archived Submerged Aquatic Vegetation - Sav 1985: Maryland

1985. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.The Chesapeake Bay SAV was mapped from 1:24,000 black and white...

100.
Vector Created with Sketch.

Archived Submerged Aquatic Vegetation - Sav 1986: Maryland

1986. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.The Chesapeake Bay SAV was mapped from 1:24,000 black and white...