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› People › Gerald Hilsher
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Gerald Hilsher
1
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World
world · NPR
Gerald Hilsher stated that scuba divers could previously see 15, 20, or 30 feet underwater in the Illinois River when the lake was clear.
“It was a place where scuba divers loved to go because they could see 15, 20, 30 feet underwater because the lake was so clear.”
15 feet
20 feet
30 feet
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