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Boulder Day Use
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Overview Boulder Day Use Area is situated on the eastern shore of Carlyle Lake, a prime getaway for city-dwellers and families. Located 50 miles east of St. Louis, the area offers the peaceful…
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Recreation.gov1 data sourceUpdated Mar 2026
Boulder Day Use is a public boat ramp on Carlyle Lake in Clinton County, Illinois (62231). GPS coordinates: 38.6961°N, 89.2322°W.