| Feature Name: | Armstrong Lake
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| Feature Type: | lake
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| State: | Washington
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| County: | Mason
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| County Population: | 49405
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| County Housing Units: | 25515
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| County Size: | 961.06 Square Miles
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| Latitude: | 47.23333
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| Longitude: | -123.20944
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| Elevation: | 256
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| Map Cell Name: | Shelton Valley
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| Geographic Keywords: | Armstrong
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