In the 1880s the traffic along the river increased , and in 1886 David Munro .
Co. used timber barges to carry milled logs down from Upper Tambo to Johnsonville or , as it was known then , Lower Tambo .
In the 1880s the traffic along the river increased , and in 1886 David Munro and Co. used timber barges to carry milled logs down from Upper Tambo to Johnsonville or , as it was known then , Lower Tambo .