"The line of the fault of the earthquake which visited the California coast on April 18, 1906, extends from a point below , , in a northwesterly direction, touching the coast at on the western boundary of the , and thence follows the coast line to , a total distance of approximately 200 s. The area affected comprises a strip on both sides of the fault line averaging 30 miles in width, or about 10,000 s. Within this area all structures and public works were more or less damage, the injury varying from a few cracks in the plaster finish to total collapse and destruction. The effects of the earthquake were most violent in close proximity to the fault line and decreased in intensity in proportion with the distance from it. The city of San Francisco occupied a central position on the fault line and consequently felt the maximum effect."