According to Liz Cook in this Kansas City Star book review:
Paulette Jiles’ dystopic1 new novel, “Lighthouse Island,” projects a future that may hit a little close to home for area farmers and those dependent on their work: a Midwest racked by ceaseless drought. . . .
There’s the promise of a distant sanctuary untouched by war and drought as well: Lighthouse Island, a coastal Pacific colony lionized in anesthetic television commercials as a place of peace and plenty. – more
1 dystopic – A dystopia is a community or society, usually fictional, that is in some important way undesirable or frightening. It is the opposite of a utopia. – Wiki (I had top look this one up too!)
One other important note, the lighthouse depicted on the cover is the Canadian British Columbian lighthouse at Lennard Island!