Big Ten Academic Alliance Geospatial Discovery Portal

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1.
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Ambient Groundwater Monitoring Wells, by Major Aquifer Lithology: Ohio

2017. Ohio Environmental Protection Agency. Ohio EPA Division of Drinking and Ground Waters maintains the Ambient Ground Water Monitoring Network as part of an effort to characterize general ...

2.
Map of Minneapolis, 1909. Plate no. 55, Water mains

Map of Minneapolis, 1909. Plate no. 55, Water mains

1909. Minneapolis (Minn.). City Engineers Office and Kirk, Fred W. Cartographic Details: Scale approximately 1:28,000. "Copyright, 1906, by Fred W. Kirk." "City Engineers Office, Andrew Rinker, City Engineer." On v...

3.
Map of Minneapolis, 1909. Plate no. 55, Water mains

Map of Minneapolis, 1909. Plate no. 55, Water mains

1909. Minneapolis (Minn.). City Engineers Office. Copyright, 1906, by Fred W. Kirk. "City Engineers Office, Andrew Rinker, City Engineer." On verso: Plate no. 55, water mains. 61 x 40 cm.

4.
Map of Minneapolis, Hennepin Co., Minn., 1895. Plate 22 b, Water mains

Map of Minneapolis, Hennepin Co., Minn., 1895. Plate 22 b, Water mains

1985. Minneapolis (Minn.). City Engineers Office and Cappelen, Frederick Wilhelm (1857-1921). Cartographic Details: Scale [1:24,000]. 2,000 ft. to 1 in. Relief shown by contours and spot heights. Shows existing and proposed water mains, stre...

5.
Map of Minneapolis, Hennepin Co., Minn., 1895. Plate 22 b., Water mains

Map of Minneapolis, Hennepin Co., Minn., 1895. Plate 22 b., Water mains

1895. Minneapolis (Minn.). City Engineers Office. Relief shown by contours and spot heights. Shows existing and proposed water mains, street car lines and railroads, and parks. "Plate 22 b.--Wate...

6.
Map of Minneapolis, Hennepin Co., Minn., 1897. Plate no. 55, Water mains

Map of Minneapolis, Hennepin Co., Minn., 1897. Plate no. 55, Water mains

1987. Minneapolis (Minn.). City Engineers Office and Cappelen, Frederick Wilhelm (1857-1921). Cartographic Details: Scale [1:24,000]. 2,000 ft. to 1 in. Relief shown by contours and spot heights. Shows existing and proposed water mains, stre...

7.
Map of Minneapolis, Hennepin Co., Minn., 1897. Plate no. 55, Water mains

Map of Minneapolis, Hennepin Co., Minn., 1897. Plate no. 55, Water mains

1897. Minneapolis (Minn.). City Engineers Office. 72 x 47 cm.

8.
Map of Minneapolis, Hennepin Co., Minn., 1899. Plate no. 46, Water mains

Map of Minneapolis, Hennepin Co., Minn., 1899. Plate no. 46, Water mains

1899. Minneapolis (Minn.). City Engineers Office and Sublette, G.W. Cartographic Details: Scale [1:24,000]. 2,000 ft. to 1 in. Relief shown by contours and spot heights. Shows water mains, street car lines and railr...

9.
Map of Minneapolis, Hennepin Co., Minn., 1899. Plate no. 46, Water mains

Map of Minneapolis, Hennepin Co., Minn., 1899. Plate no. 46, Water mains

1899. Minneapolis (Minn.). City Engineers Office. Atlas plate 64. Longitude west from Greenwich and Washington, D.C. “Aggregate Statistics of the United States” tables for 1860 on verso. 72 x 47 cm.

10.
Map of Minneapolis, Hennepin Co., Minn. Plate 56, Water mains

Map of Minneapolis, Hennepin Co., Minn. Plate 56, Water mains

1898?. Minneapolis (Minn.). City Engineers Office and Cappelen, Frederick Wilhelm (1857-1921). Cartographic Details: Scale approximately 1:24,000. 2000 ft. to one in. Shows water mains. On verso: Plate 56. -- Water Mains. Relief shown by cont...

11.
Map of Minneapolis, Hennepin Co., Minn. Plate 56, Water mains

Map of Minneapolis, Hennepin Co., Minn. Plate 56, Water mains

1898?. Minneapolis (Minn.). Engineer Department. Atlas plates 70 and 71. Longitude west from Greenwich and Washington, D.C. Map may have been published in 1870 or later. 81 x 48 cm.

12.
Map of Mt. Rainier, Maryland, section one, Sanborn Map Company, 1921

Map of Mt. Rainier, Maryland, section one, Sanborn Map Company, 1921

1921. Sanborn Map Company. A map of Mt. Rainier, Maryland from January 1921. The map was created by the Sanborn Map Company in New York and covers a portion of the town from ...

13.
Map of Mt. Rainier, Maryland, section two, Sanborn Map Company, 1921

Map of Mt. Rainier, Maryland, section two, Sanborn Map Company, 1921

1921. Sanborn Map Company. A map of Mt. Rainier, Maryland from January, 1921. The map was created by the Sanborn Map Company from New York and is the second map in a series o...

14.
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Ohio EPA 401 Water Quality Certification for Nationwide Permits: Ohio

2016. Ohio Environmental Protection Agency. The areas in this data set illustrate the eligibility of streams in the area for a nationwide 401 permit. Three categories are identified, eligible...

15.
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Ohio River Source Water Protection Areas, Drinking Water: Ohio

2016. Ohio Environmental Protection Agency. The Ohio Source Water Protection Program is intended to protect Ohio's streams, rivers, lakes, reservoirs, and ground waters used for public drinki...

16.
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Public Water System Drinking Water Intakes: Ohio

2016. Ohio Environmental Protection Agency. Active public water system intakes used for drinking water in Ohio. Data updated daily at midnight.

17.
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Public Water System Drinking Water Wells: Ohio

2016. Ohio Environmental Protection Agency. Change URL to https when loading layer to web map.Active public drinking water wells using ground water in Ohio. Data updated daily at midnight.

18.
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Sole Source Aquifers, Drinking Water: Ohio

2016. Ohio Environmental Protection Agency. U.S. EPA defines a Sole Source Aquifer (SSA) as an aquifer that supplies at least 50 percent of the drinking water consumed in the area overlying t...

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Source Water Protection Areas, Groundwater: Ohio

2017. Ohio Environmental Protection Agency. The Ohio Source Water Protection Program is intended to protect Ohio's streams, rivers, lakes, reservoirs, and ground waters used for public drinki...

20.
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Underground Sources of Drinking Water, Devonian Outcrop: Ohio

2017. Ohio Department of Natural Resources. The Ohio Department of Natural Resources, Division of Geological Survey, with partial funding from the USEPA through the Ohio EPA, has mapped the l...