Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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You searched for: Year 1998 Remove constraint Year: 1998 Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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1.
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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.
Aerial Imagery: DuPage County, Illinois, 1998

Aerial Imagery: DuPage County, Illinois, 1998

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

3.
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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.

4.
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Aerial Imagery Index Grid, 1-foot Resolution: Prince George's County, Maryland, 1998

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

5.
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Aerial Imagery Index Grid, 3-foot Resolution: Prince George's County, Maryland, 1998

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

6.
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...

7.
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...

8.
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...

9.
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...

10.
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...

11.
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...

12.
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...

13.
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...

14.
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...

15.
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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 ...

16.
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Archived Submerged Aquatic Vegetation - Sav 1998: Maryland

1998. 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...

17.
Bedrock geologic map of the Midway area, St Louis County, Minnesota, M-86

Bedrock geologic map of the Midway area, St Louis County, Minnesota, M-86

1998. Jirsa, Mark A. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Midway area, Virginia Horn, Mesa...

18.
Bedrock geologic map of Virginia Horn, Mesabi Iron Range, St Louis County, Minnesota, M-85

Bedrock geologic map of Virginia Horn, Mesabi Iron Range, St Louis County, Minnesota, M-85

1998. Jirsa, Mark A., Boerboom, Terrence J., and Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Virginia Horn area, Mesabi Iron ...

19.
Bicycle map, City of Bloomington /prepared by the Bloomington Bicycle & Pedestrian Safety Commission.

Bicycle map, City of Bloomington /prepared by the Bloomington Bicycle & Pedestrian Safety Commission.

1998. Bloomington Bicycle & Pedestrian Safety Commission (Bloomington, Ind.). Fall 1998--Panel.; Includes list of agencies to contact for further information and area bicycle shops.; On verso: Downtown Bloomington bicycle map...

20.
C-11 Geologic atlas of Mower County, Minnesota [Part A]

C-11 Geologic atlas of Mower County, Minnesota [Part A]

1998. Mossler, J.H and Minnesota Geological Survey. 6 pls. Scale 1:100,000. Pl. 1, data-base; pl. 2, bedrock geology; pl. 3, surficial geology; pl. 4, depth to the pre-Cretaceous bedrock surface and ...