| Feature Name: | Grass Lake
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| Feature Type: | swamp
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| State: | Wisconsin
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| County: | Rock
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| County Population: | 152307
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| County Housing Units: | 62187
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| County Size: | 720.47 Square Miles
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| Latitude: | 42.81111
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| Longitude: | -88.97917
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| Map Cell Name: | Milton
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| Geographic Keywords: | Grass
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