Is it hypothetically possible to create a giant levee that is a non-physical forcefield or electronic membrane?

What examples are there in science fiction of molecular shields that can cancel out or "eat" certain molecules--and are they plausible? Is it hypothetically possible to create a giant levee that is a non-physical forcefield or electronic membrane that could cover a greater scope than steel or concrete, such as a thousands-of-miles shoreline in danger of flooding due to a rising sea level? Any examples or instances of this being done on a small scale would be helpful to answer the question.

I'm trying to figure out how much energy would be needed to produce a giant barrier like this. Maybe it can convert the water molecules to energy, too, if they are washing into it at a substantial force.

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Is it hypothetically possible to create a giant levee that is a non-physical forcefield or electronic membrane?

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