The vast
white pine forests of the St. Croix River Valley became a major target for logging in the mid-19th century. The St. Croix and its tributaries provided easy transport downstream. Moreover, the St. Croix flowed directly into the
Mississippi River, making a convenient route to the burgeoning communities all down the length of the nation plus the numerous inland settlements they served. Since multiple logging companies sent their timber down the same waterway, each company had a distinctive "timber mark" or "owner's mark" they stamped into the bottom of each log. In the 1830s and 40s the St. Croix harvest was collected and sorted downstream on an
honor system, but the increasing number of companies and logs soon necessitated a more official approach. In 1851 the
Minnesota Legislature chartered the St. Croix Boom Company, granting them the right to collect all logs at a certain point on the river, sort them according to mark, and deliver them to the appropriate owners in return for 40 cents per thousand
board feet (17 cent/m3). The Boom Company's leadership was largely composed of men from
Marine,
Taylors Falls, and
Osceola, so the boom was initially located near Taylors Falls. However, there were two major problems with this. One was that this was upstream from the mouth of the
Apple River, the St. Croix's second-most productive tributary. The other was that Stillwater was already becoming the region's primary lumber town, and mills there had to pay extra to have their logs
timber rafted downstream. In 1856 the Boom Company ran into financial trouble, so a syndicate of Stillwater-based lumbermen led by
Isaac Staples seized their opportunity to purchase and relocate the operation. Staples, familiar with log booms from his native
Maine, picked an ideal site for the new boom. It was north of Stillwater in a stretch of the river that was narrow, high-banked, and naturally divided into multiple channels by small islands. ==Operation==