What was the turn around point for Lewis and Clark?

Fort Clatsop was the last encampment of the Lewis and Clark Expedition during the winter of 1805-1806 before they embarked on their return home. Its located along the Lewis and Clark River approx. 5 milkes from Astoria. The explorers began their journey home on March 23, 1806. On July 3, after crossing the Continental Divide, the Corps split into two teams so Lewis could explore the Marias River. Lewis and Clark stayed separated until they reached the confluence of the Yellowstone and Missouri Rivers on August 11. Once reunited, the Corps was able to return home quickly via the Missouri River. They reached St. Louis on September 23, 1806.