Whitewater State Park protects 2,700 acres of picturesque limestone bluffs and deep ravines within Minnesota's Blufflands region, a landscape carved nearly 450 million years ago when shallow seas deposited hundreds of feet of sedimentary rock across southeastern Minnesota, later eroded into valleys and bluffs and further sculpted by glacial meltwater. The Dakota named the river "Whitewater" because it turned milky white each spring as rising water eroded the pale clay deposits lining its banks, a seasonal transformation still visible today. An 1851 treaty opened the area to white settlement, and the farming and grazing that followed stripped much of the valley's native vegetation, triggering increasingly severe flooding by 1900; the nearby town of Beaver alone flooded 28 times in 1938, the single worst year on record for the Whitewater Valley. Local citizens successfully lobbied to establish the state park around 1919 specifically to protect some of the valley's most scenic remaining land, but the broader watershed crisis wasn't resolved until the early 1940s, when conservationist Richard Dorer designed a sweeping rehabilitation plan that replanted slopes, built contoured terraces, and constructed flood-control dikes, work that ultimately created the adjacent 28,000-acre Whitewater Wildlife Management Area. Today the spring-fed Whitewater River and Trout Run Creek make the park a genuine angler's paradise for brown, brook, and rainbow trout, while trails climbing to Chimney Rock and Coyote Point reward hikers with sweeping views over the river valley and sandy beach below. Designated an Important Bird Area by the Audubon Society, the park hosts more than 240 recorded bird species and draws dedicated birders each year for events like Warbler Weekend, reflecting the Blufflands' status as home to 43 percent of Minnesota's rare plant and animal species.