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Highway O - South
AuthoritativeMarathon County, Wisconsin, 54455→|Big Eau Pleine River - Big Eau Pleine Reservoirer· lake· 6,424 ac
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USGS1 data sourceUpdated Mar 2026
Nearby Ramps
Big Eau Pleine River Access
Big Eau Pleine River
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Big Eau Pleine River
Boat Ramp on Lake Dubay 4890
Lake Dubay 4890
Highway O Launch
Little Eau Pleine River
Big Eau Pleine County Park - South Unit Boat Ramp 2
Big Eau Pleine River
Highway O - South is a public boat ramp on Big Eau Pleine River - Big Eau Pleine Reservoirer in Marathon County, Wisconsin (54455). GPS coordinates: 44.7253°N, 89.7875°W.