Recognizing the need for a full-time engineer at St. Paul, the Corps sent Major Farquhar to complete repair of the apron and dikes at St. Anthony Falls and to improve river transportation. Under Farquhar, the District surveyed the Red River of the North; took over the Duluth canal harbor project; and removed boulders, snags, and overhanging trees from Minnesota, Chippewa, St. Croix, and Mississippi Rivers. In 1878, Farquhar combined the work of the St. Paul and Rock Island offices.