16 August 2014
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| Lake Guardian leaving Lock 4 (Twin Flight Locks) |
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| Downbound from Lock 4 toward Glendale Ave. Bridge |
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| Downbound approaching Glendale Ave. Bridge |
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| Lake Guardian under Glendale Ave. Bridge |
Quote from website below: The Lake Guardian goes out twice a year on surveys (spring and summer). Scientists conduct research on the Lake Guardian. Monitoring programs sample the water, aquatic life, sediments and air to assess the health of the Great Lakes ecosystem.
Website: Lake Guardian
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