 His soldiers originally built a winter settlement, known as Cantonment New Hope, two miles (3 km) up the St. Peter's River from the confluence.The next spring, in anticipation of flooding, he moved the troops to higher ground at a site known as Camp Coldwater, a mile up the Mississippi from the confluence of the rivers.Leavenworth was later relieved of his duty in August 1820 and succeeded by Colonel Josiah Snelling.