A common sign of long-term lateral fault displacement is seen in stream courses. They would prefer to run straight downhill to the sea, but if a fault is pulling part of the land sideways, stream courses bend with it as far as they can.
The west bank of Alder Creek here is a deep gravel bed, not bedrock. Fault movement has pulled it away from matching beds on the other side, and without their support the banks are collapsing into the creek bed. A very recent landslide is seen at right, which threatens the roadway enough that the state has closed it to vehicles. The streambed is so choked with gravel that it makes good habitat for alder thickets.
Notice the terraces visible beyond the creek. These are wave-cut platforms that have been raised above sea level, a sign that the forces affecting the San Andreas fault include compression across the fault as well as the more familiar lateral motions along it.