In October 1911, heavy monsoon rains generated the largest flood ever recorded on the San Juan River, causing severe damage along the entire length of the river and many of its tributaries. More than 100 bridges and of railroad track were destroyed in the Colorado part of the river basin alone, completely cutting off transport and communications. Along the Animas River, "virtually all the crops" were destroyed. On the lower river, most of Bluff was inundated and of farmland was swept away. At Mexican Hat, Utah the Goodridge bridge, whose deck was above the river, was destroyed, indicating the floodwaters were at least that deep.