Oregon County

Greer Spring, which the plaque counts as the Ozarks' third largest, is now ranked second, averaging 360 cubic feet of water a second. It rises at the bottom of a narrow chasm, a little from a cavern and most from a main outlet that boils up about 100 feet downstream, then drops 65 feet in 1.2 miles to the Eleven Point River, turning it into a cold-water trout stream for several miles. A National Natural Landmark since 1980, the spring has belonged to the Forest Service since 1993 and is reached by a mile-long trail from Missouri 19.

What the plaque says

Oregon County Here in the extreme southern Missouri Ozarks, Oregon County was organized in 1845, and named for the Oregon territory of the Far West. One of 11 counties along the Arkansas border, Oregon is in a region long roamed by various Indian tribes and claimed by the Osage until 1808. Charles Hatcher was the first settler, probably in 1809. Early pioneers were largely from Ky., and Tenn., with a few from the East. The first county seat, Thomasville, was laid out on Eleven Point River in 1845 on a site given by John and Matilda Thomas. In 1859, the county seat was moved by law to a more central location and Alton, a new town, was founded. In the Civil War, Union troops burned the courthouse there 1863. Through the war the county, largely pro-Southern, suffered guerrilla raids and troop movement. A post war outlaw band was routed by the county militia in 1868. Thayer, the largest town in the county, was founded as railway division point, 1881, on the newly built St. Louis, Ft. Scott & Memphis (Frisco) R. R. Early stations were Koshkonong, St. Elmo, and American. (See other side) Erected by State Historical Society of Missouri and State Highway Commission, 1961 Oregon County (Continued from other side) Noted for its splendid scenery, Oregon is a lumbering and livestock farming county. In an arc, through the county, runs lovely, spring-fed Eleven Point River. Hundreds of prehistoric Indian mounds were found along this river and its tributaries. In northeastern Oregon and in adjoining counties lies the historic Irish Wilderness where in 1858, Father John Hogan founded a Catholic colony. By 1859, forty families, many of them Irish, settled the area. A colony chapel was built s.e. of Wilderness village in Oregon County near the Ripley County line. Civil War activities ended the colony venture, and the area is now part of Clark National Forest, founded in 1930's. Near Koshkonong is famed Grand Gulf, an extensive chasm made by a collapsed cave. The county's large, beautiful springs, Blue, Boze, Turner, Falling, Thomasson, and Greer, were all pioneer millsites. At Greer, third largest spring in the Ozarks, power was sent by cable to the mill on the hilltop from a turbine at the spring in the valley. The second largest spring in the Ozarks, Mammoth, is south of Thayer, in Arkansas. Erected by State Historical Society of Missouri and State Highway Commission, 1961

Where it stands

Worth the stop nearby

• Big Spring (Ozark National Scenic Riverways) — 29 mi
  A spring at the foot of a dolomite bluff south of Van Buren averaging about 289 million gallons a day into the Current River, dissolving out a cave as it flows, beside a CCC lodge.

More markers nearby

• Van Buren — 30 mi