So sorry, Bonnie. I'm right there with you. Here in downtown Houston, we have 'coons out the gazooble... our out our storm sewers and attics, to be more accurate.
I don't know what the answer is to raccoons. Having a pond with steep, straight-down sides, instead of gradually sloping sides is one help, as well as giving fish hiding places (ledges, upside-down strawberry pots, milk crates, etc.), and perhaps a good strong cover for your temporary housing.
But raccons are strong and can bypass all sorts of things we do to stop them. They're wasteful, too, as they don't even completely eat the fish they catch - why not catch and eat two, instead of killing every fish in the pond?!?!?
Here in South Texas, since our rice fields and marshes are being turned into housing developments, we have a problem with herons who can't find food in nature, so they turn to our ponds. Yesterday morning, I found three dead fish (including one of my favorites) - in three seperate ponds. Our locat water garden shop advocates putting a strong plastic net / screen over the pond at night. I'm going to use my Christmas give Home Depot Gift Card to buy PVC pipe and screen, and start covering the pond at night - maybe all day, since the neighbors' danged cats seem to take liberties with my yard as well. Looks like Hel*, but at least I'll keep my fish alive.
PS: A good outdoor dog is about the only thing that will sense and chase raccoons.