March Rapids is an unincorporated community located in the town of Eau Pleine, Marathon County, Wisconsin, United States. In 1877, J. B. Holmes and B. D. Holmes built a mill to saw lumber and shingles at the site of March Rapids on the Big Eau Pleine River in the pine forest of central Wisconsin. A village named Hope formed around the mill, with possib…March Rapids is an unincorporated community located in the town of Eau Pleine, Marathon County, Wisconsin, United States. In 1877, J. B. Holmes and B. D. Holmes built a mill to saw lumber and shingles at the site of March Rapids on the Big Eau Pleine River in the pine forest of central Wisconsin. A village named Hope formed around the mill, with possibly 75 inhabitants.