Here are the nuclear power plants in the US close to a shoreline:
- On the West Coast, there are two nuclear plants with four reactors adjacent to the ocean: Diablo Canyon Units 1 and 2, and San Onofre Units 2 and 3. Two additional reactors have been shut down and decommissioned: Humboldt Bay Unit 1, and San Onofre Unit 1.
- On the Gulf of Mexico, there is one plant with one reactor situated on the coast: Crystal River Unit 3.
- One Gulf region plant with one reactor is located in a low-lying inland region that may be affected by storm surges: Waterford Unit 3.
- On the East Coast, only one plant with two reactors is situated directly on the Atlantic Ocean: Saint Lucie Units 1 and 2.
- Six East Coast plants with nine reactors are located behind barrier islands: Seabrook Unit 1, Pilgrim Unit 1, Millstone Units 2 and 3, Oyster Creek Unit 1, Brunswick Units 1 and 2, and Turkey Point Units 3 and 4. The islands and shallow lagoons behind them may or may not be large enough to stop a tsunami from flooding the facilities. Millstone Unit 1 has been decommissioned. Shoreham Unit 1 never operated at commercial levels, and has been dismantled.
- Five more East Coast plants with nine reactors are located on tidal rivers at varying distances from the ocean: Hope Creek Unit 1, Salem Units 1 and 2, Indian Point Units 2 and 3, Calvert Cliffs Units 1 and 2, and Surry Units 1 and 2. The locations may or may not be far enough upstream to be protected from tsunami-induced flooding. Two additional reactors have been shut down: Maine Yankee Unit 1, which has been decommissioned, and Indian Point Unit 1, which is still standing.
Equally important as redoing analyses is actually verifying the safety systems work. TEPCO, the owner/operator of Fukushima Daiichi, has been accused of not verifying the functionality of some of the safety systems. Whether that is true will be worked out over the next few months. But there should be another round of testing of each plant in the US regardless of the outcome.