| Feature Name: | Blackwater Dam
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| Feature Type: | dam
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| State: | New Hampshire
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| County: | Merrimack
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| County Population: | 136225
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| County Housing Units: | 56244
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| County Size: | 934.43 Square Miles
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| Latitude: | 43.31583
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| Longitude: | -71.72389
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| Map Cell Name: | Webster
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| Geographic Keywords: | Blackwater
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