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| Eleven Point River | |
|---|---|
| Name | Eleven Point River |
| Source | Ozark Plateau |
| Mouth | Spring River |
| Location | Missouri, United States |
| Length | 138 mi |
| Basin countries | United States |
Eleven Point River The Eleven Point River is a 138-mile tributary of the Spring River in the Ozarks of southern Missouri and northern Arkansas. The river flows through Oregon County, Missouri, Randolph County, Arkansas, and portions of the Mark Twain National Forest region, traversing karst landscapes, national forests, and conservation areas that have drawn attention from U.S. Fish and Wildlife Service, National Park Service affiliates, and regional conservation organizations. Its scenic canyons, springs, and riparian corridors have made the river a focus of ecological study, recreational paddling, and cultural memory in the Ozark Mountains.
The river rises on the Saline Creek (Missouri) plateau of the Ozark Plateau near Bald Knob (Missouri), flows generally south-southeast through Oregon County, Missouri, passes near communities such as Alton, Missouri and Thomasville, Missouri, and receives contributions from tributaries including Rivs Creek, Harrison Creek, and Bay Creek before joining the Spring River near the Missouri–Arkansas border. Along its course the river traverses public lands administered by agencies such as the U.S. Forest Service and lies adjacent to designated areas like the Eleven Point National Wild and Scenic River corridor, intersecting regional roads including U.S. Route 160 and Missouri Route 19. The channel meanders through limestone bluffs, gravel bars, and bottomland hardwoods characteristic of the St. Francis River watershed and the greater Mississippi River Basin.
The river flows through a karst-dominated subprovince of the Ozarks, where soluble limestone and dolomite bedrock produce springs, losing reaches, and sinkholes similar to features in the Buffalo National River region. Groundwater contributions from springs such as Greer Spring–notably influential in nearby basins–parallel hydrologic dynamics seen in watersheds monitored by the United States Geological Survey and Environmental Protection Agency for water quality, discharge, and nutrient loading. Channel morphology reflects Pleistocene and Holocene fluvial processes studied by researchers affiliated with institutions like the University of Missouri and Missouri State University, while sediment transport and pool-riffle sequences relate to work by geomorphologists associated with the American Geophysical Union and the Geological Society of America.
The riparian corridors support assemblages characteristic of the Missouri Department of Conservation and the Arkansas Game and Fish Commission regions, including freshwater mussels, darters, and percids comparable to faunas cataloged in Mark Twain National Forest streams and the White River system. Wooded floodplains harbor oaks, hickories, and sycamores protected within parcels similar to the Irish Wilderness and are habitat for mammals recorded by researchers at the Missouri Botanical Garden and Missouri Department of Conservation, including white-tailed deer, river otter, and beaver. Avifauna includes species monitored by Audubon Society chapters and the Missouri Department of Conservation such as prothonotary warbler and bald eagle, while aquatic invertebrates serve as bioindicators in studies led by the Society for Freshwater Science and regional chapters of the American Fisheries Society.
The river corridor intersects lands historically used by Indigenous peoples recorded in regional histories of the Osage Nation and archaeological surveys conducted by the Missouri Archaeological Society and Arkansas Archaeological Survey. Euro-American settlement patterns along the river mirror trends documented in county histories such as those of Oregon County, Missouri and events recorded by the State Historical Society of Missouri, with early industries including milling and small-scale agriculture. The river figures in cultural narratives preserved by institutions like the Missouri Folklore Society and in conservation campaigns by groups such as the Ozark Society, connecting to wider movements exemplified by the National Wild and Scenic Rivers Act and advocacy by figures associated with the Sierra Club and regional conservationists.
Designated sections have been managed under protections inspired by the National Wild and Scenic Rivers System, attracting paddlers, anglers, and hikers organized through outfitters and nonprofits linked to the Missouri River Relief model and the American Canoe Association. Recreational fishing targets species noted by the Arkansas Game and Fish Commission and the Missouri Department of Conservation, while river access points and trails are coordinated with the U.S. Forest Service and local land trusts. Conservation planning involves collaborations among the Missouri Department of Natural Resources, the U.S. Fish and Wildlife Service, the Nature Conservancy, and grassroots organizations, emphasizing habitat restoration, invasive species control, and water-quality monitoring in partnership with university extension programs at the University of Arkansas and Southeast Missouri State University.
Bridges and crossings over the river include structures on U.S. Route 160 and county routes maintained by Oregon County, Missouri and state departments of transportation such as the Missouri Department of Transportation and the Arkansas Department of Transportation. Floodplain management and emergency response planning reference guidance from the Federal Emergency Management Agency and flood studies commissioned by the United States Geological Survey and state water resource agencies. Historic flood events and hydrologic modeling have informed levee, culvert, and bridge design standards promoted by the American Society of Civil Engineers and state engineering divisions, while watershed-scale resilience initiatives draw on funding and technical support from federal programs administered by the Natural Resources Conservation Service and conservation finance mechanisms advocated by the Land Trust Alliance.
Category:Rivers of Missouri Category:Wild and Scenic Rivers of the United States