| Feature Name: | Mallard Slough
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| Feature Type: | swamp
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| State: | South Dakota
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| County: | Clark
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| County Population: | 4143
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| County Housing Units: | 1880
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| County Size: | 957.92 Square Miles
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| Latitude: | 45.09306
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| Longitude: | -97.82611
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| Map Cell Name: | Crocker
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| Geographic Keywords: | Mallard,
Slough
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