| St. Francis River | |
| Map: | Stfrancisrivermap.png |
| Map Size: | 300 |
| Pushpin Map Size: | 300 |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Missouri, Arkansas |
| Subdivision Type3: | Region |
| Subdivision Name3: | Ozark Plateau, Mississippi Alluvial Plain |
| Subdivision Type4: | District |
| Subdivision Name4: | St. Francois Mountains, Crowleys Ridge |
| Subdivision Type5: | Cities |
| Subdivision Name5: | Farmington, Missouri, Fisk, Missouri, Lake City, Arkansas, Marked Tree, Arkansas |
| Length: | 426miles |
| Discharge1 Location: | Latitude of Wittsburg |
| Discharge1 Avg: | 8976cuft/s[1] |
| Source1: | Elephant Rocks State Park |
| Source1 Location: | Iron County, St. Francois Mountains, Ozark Plateau, Missouri |
| Source1 Elevation: | 1568feet |
| Mouth: | Mississippi River |
| Mouth Location: | Near Helena-West Helena, Phillips County, Mississippi Alluvial Plain, Arkansas |
| Mouth Coordinates: | 34.6244°N -90.5919°W |
| Mouth Elevation: | 171feet |
| Basin Size: | 7550sqmi[2] |
| Tributaries Left: | Little St. Francis River, 12-Mile Creek, Blue Spring, Mingo Ditch, Little River |
| Tributaries Right: | Stouts Creek, Marble Creek, Big Creek, Otter Creek, L'Anguille River |
The St. Francis River is a tributary of the Mississippi River, about long,[3] in southeastern Missouri and northeastern Arkansas in the United States. The river drains a mostly rural area and forms part of the Missouri-Arkansas state line along the western side of the Missouri Bootheel.
The river rises in a region of granite mountains in Iron County, Missouri, and flows generally southwardly through the Ozarks and the St. Francois Mountains near Missouri's highest point Taum Sauk. It forms the Missouri-Arkansas border in the Bootheel and eventually exits the state at Missouri's lowest point in the "toe" at above sea level. It passes through Lake Wappapello, which is formed by a dam constructed in 1941. Below the dam the river meanders through cane forests and willow wetlands or forested swamp, transitioning from a clear stream into a slow and silt-laden muddy river as it enters the flat lands of the Mississippi embayment. In its lower course the river parallels Crowleys Ridge and is part of a navigation and flood-control project that encompasses a network of diversion channels and ditches along it and the Castor and Little rivers. Below the mouth of the Little River in Poinsett County, Arkansas, the St. Francis is navigable by barge. It joins the Mississippi River in Phillips County, Arkansas, about 7miles north of Helena.
Along its course in Missouri, the river flows through the Mark Twain National Forest and past Sam A. Baker State Park and the towns of Farmington, Greenville and Fisk. In Arkansas it passes the towns of St. Francis, Lake City, Marked Tree and Parkin, and continues through two additional namesakes of the river — St. Francis County, and St. Francis Township in northeastern Phillips County — ending its course adjoining the St. Francis National Forest.
In addition to the Little River, tributaries of the St. Francis include the Little St. Francis River, which joins it along its upper course in Missouri; the Tyronza River, which joins it in Arkansas; and the L'Anguille River, which joins it just above its mouth.
The river became the home of Cherokee Indians who attacked a boat on the Tennessee River on June 11, 1794 known as the Muscle Shoals Massacre and had removed to the west.[4] The Spanish authorities allowed the Indian settlement to trade and the area flourished with a population greater than Arkansas Post.
The origin of the river's name is unclear. It might refer to St. Francis of Assisi, the founder of the Franciscan order. None of the region's early explorers were Franciscans, however. One possibility is that Jacques Marquette, a Jesuit, named the river when he explored its mouth in 1673. Before his voyage down the Mississippi Marquette had spent some time at the mission of St. François Xavier, named for the Jesuit missionary Francis Xavier. The spelling of the river's name shifted from "François" to "Francis" in the early 20th century. A number of place names in the region stem from the river's name, including St. Francois County and the St. Francois Mountains.[5]
The United States Board on Geographic Names settled on "St. Francis River" as the stream's name in 1899. According to the Geographic Names Information System, historical names for the river have included:
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