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Originally Posted by willravel
I haven't felt an earthquake in over 10 years. If the 89 quake didn't hurt the delta, odds are that it'll be fine.
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It's not about earthquakes. It's about beavers!
Beavers and squirrels, but especially beavers, dig rather large dens in the old levees and weaken them severely, so that eventually they fail under a load that they might have stood up to in past years.
Aside from other issues of safety, levees take damage just sitting there. And there is no statewide or regional plan or agency that is responsible for maintaining them.