Probably not 70'. First, whatever hit Dweste's boat needs to pass thru the Golden Gate and then up the channel. . . .

I just checked the elevation of Stockton on GoogleEarth and found it to be a mere 15 meters/~50 ft above sea level. The water level there is 4 meters/15' above sea level. Is a tsunami really a threat to Stockton?

Interesting as an intellectual exercise, but it would take a seriously bad tsunami to put enough volume of water through the GG and then affect Stockton after spreading across all the area behind the GG.

The water will prolly come up the channel. If the pier doesn't float and ride the water level, it might be better to ride it out in the channel.

As for going to high ground, Dweste may be there now.

Dweste?