| Feature Name: | Rock Island
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| Feature Type: | island
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| State: | Montana
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| County: | Sanders
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| County Population: | 10227
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| County Housing Units: | 5271
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| County Size: | 2762.17 Square Miles
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| Latitude: | 47.94056
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| Longitude: | -115.71111
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| Map Cell Name: | Noxon Rapids Dam
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| Geographic Keywords: |
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