| Feature Name: | Arm Brook
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| Feature Type: | stream
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| State: | Massachusetts
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| County: | Hampden
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| County Population: | 456228
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| County Housing Units: | 185876
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| County Size: | 618.4 Square Miles
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| Latitude: | 42.14306
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| Longitude: | -72.74306
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| Map Cell Name: | Mount Tom
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| Geographic Keywords: | Arm
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