| Feature Name: | Black Marsh
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| Feature Type: | swamp
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| State: | Maryland
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| County: | Baltimore
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| County Population: | 754292
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| County Housing Units: | 313734
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| County Size: | 598.59 Square Miles
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| Latitude: | 39.22389
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| Longitude: | -76.415
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| Map Cell Name: | Sparrows Point
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| Encyclopedia Link: | Black Marsh
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| Geographic Keywords: | Black,
Marsh
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