I tore through this series (technically one long book) this week and I liked it so much that it's infected my dreams! Blackwater is the tale of the Caskey family, wealthy millowners in the little Alabama town of Perdido. The saga tracks them over three generations and shows how the family develops alongside the growth of their home and businesses. At the center of it all is the mysterious Elinor, who only son Oscar Caskey discovers sitting patiently in a flooded hotel in 1919.
To me, Blackwater shares some DNA with The Shadow over Innsmouth, but is more insular and slowly paced. It could be described very comfortably as a southern gothic. I'm not the biggest fan of the gothic genre myself, so the fact that it kept me deeply engrossed is a testament to the writing. The moments of horror are pretty sparse, though McDowell's command of horror atmosphere is impressive when it does show up. What it really excels in is the family dynamics, especially as they relate to the culture. You could not change the setting and have the same characters or story, it's firmly rooted in place.
Even though it's historical fiction written in the 1980s, McDowell manages to write some fantastic female characters. There are certainly some dated aspects, especially how the Strickland family is eventually handled, but his work is pretty refreshing to me, especially compared to other writers of his time. Even the 'underclass' of black characters have their role to play, and the story examines the dynamics between the serving staff and the rich family in a way that's historically accurate but not always too difficult to read about. All of his characters get dignity and respect, even if they come to horrific and tragic ends.
I would say the first three books are much stronger than the last three, though there were a lot of moments in 4 and 5 that I adored. I just wish the finale concentrated more on the lore and emotions built up throughout the series than on the logistics of the youngest generation's marriages. Still, it was a very fitting ending, and I loved my time with the whole saga so much regardless. It's a very slow burn so I can't recommend it to everyone, but I'd certainly recommend it if you like southern gothic stories that build and build.