As a Pennsylvania girl, this topic is inherently interesting, but there was much more that appealed. The writing style, past/present time shifts, and character arcs were engaging. The time transitions were not always smooth and some were redundant, but seeing events via the same narrator in both eras really drew me in - some clues, a few red herrings, but no terrible spoilers in the mix. In fact, several plot twists were quite clever. The latter-day romance, however, was pretty much routine from meet cute to decades later. Happily, it's not a romance novel but historical fiction that springboards from the actual flood, reflects back to those events when the plot or characters merit, and moves ahead in time without losing the central theme that tragedy stays with a community for a very long time and in many ways (some sad, some inspiring). Also, nice job with the sidebar themes of immigrant, women, and status in the community or in the work force. Deep research with a light touch rounded it all out nicely.