The Flash - Certain Renewal
The Flash may be down considerably, but 2.4 million viewers and a 0.9 rating mean it is still the network's highest-rated series. The series still adds over 100 percent in DVR ratings, so it's safe.
Black Lightning - Certain Renewal
This new series is averaging 2 million viewers and a 0.6 rating. The series is already a force to be reckoned with on the DVR front.
Supernatural - Certain Renewal
Supernatural is averaging 1.8 million viewers and a 0.6 rating. The show builds over 80 percent with DVR viewing factored in. It will go on as long as the leads want it to.
Riverdale - Certain Renewal
Riverdale became a sophomore sensation for The CW and is currently up almost 50 percent vs. its Season 1 average. It is averaging 1.5 million viewers and a 0.5 rating. It almost doubles when DVR ratings are factored in. With a robust Netflix deal that sees it air internationally within hours of its CW airing, it makes the network a lot of money.
Supergirl - Certain Renewal
The girl of steel has suffered in the ratings this year. It has shed 30 percent and is averaging 2 million viewers and a 0.6 rating. The show still secures an 80 percent bump with DVR viewing. It's not going anywhere.
DC's Legends of Tomorrow - Certain Renewal
Like the other DC TV shows, Legends is down. It is still averaging 1.6 million viewers and a 0.5 rating and gets an 80 percent bump in the ratings. With a rotating cast that could pluck from any DC comic and/or current Arrowverse show on the air to replace characters that aren't working, it seems like one of the easier series to fix, should the writers have the magic to do it.