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Posts Tagged 'drain'

Tsunami’s vs. San Francisco

I was watching tv last night and the topics of tsunami’s came up again as it has frequently since the Japanese earthquake/tsunami. We in San Francisco have it pretty good if we’re hit by a tsunami and let me tell you why.

First we’re pretty hilly on the coast. Our natural seawall at the beach is about 20 ft. high. That means that the tsunami that hit Japan would possibly leave a few puddles if there was enough force to push it up and over the sea wall. For the most part it would swirl around into the bay weakening its force and the SOMA area with it’s 10 ft high piers would get the worse of it which still wouldn’t be much.

My house is roughly 213 ft above sea level so we would need a huge tsunami wave to cause any damage to our house from a wave hitting the coast. The worst problem we might have is from the storm drains overflowing. There have been times of high rain that the storm drains can’t handle the amount of water so the you’ll see man hole covers lifted up under the pressure and water pouring out and down the streets. Since the water can’t go back into the drains you will literally get  rivers of water flowing downhill to the beach where it collects at the sand dunes without enough power to flow over and even then there might only be a few inches gathered.

The photo included with this post is all CGI and since it exists in someone’s photoshop mind and has yet to be documented we don’t have much to worry about. A tsunami in San Francisco would come from our storm drains before it would come from the sea. Alameda on the other hand, beware.