Currently 2 episodes available.
Swamp Thing can be found in the usual places.
Abby Arcane returns home to Marais, Louisiana to investigate a deadly swamp-borne virus, only to discover the dark, terrifying mysteries of the swamp.

Even though the show did well in the rating, season 1 has already been cancelled. The reason was due to rebate that never happened "
"North Carolina promised a $40m tax rebate that, due to a paperwork error, they were unable to deliver. That was roughly half the proposed budget for s1 (which is estimated at $80m.)
When NC discovered the error, the corrected. WB shut down production, realizing they'd be taking a bath on the rebate and paying for far more of it than assumed. The adjusted number from NC is something like $14m. That's a massive difference"

Another network may pick it up for season 2, but no word as yet.