Slowly creaking back into blogging. Here's #28 in the ongoing series. There's another one coming up for salt water; this one digs a little more obscurely than the others into mythology and lore for its mixture of obvious cliches and recondite weirdness. It seems that worldwide there's an amazing effort put into creating alluring maidens, nefarious bogeymen,and dire beastsall to explain why people who can't swim drown in pools and rivers.
As usual, roll d20 on the columns jointly, separately,or have this do it for you.