Do beavers actually know what they're doing or do they just see all that water flowing down river and think absolutely not.

Good ones, today - thanks, folks, and nicole. ole ... (forgot to hit "space" so) Eta: "joyful"

Katlan, I guess you are aware that pool water only gets changed once a season, when they drain the pool completely. What goes in the pool stays in the pool until it is completely drained, although filters and chemicals help - but only to an extent. I plan to drain my pool in November, at the end of our season.

Rusty