Update. No way to tell if it's working. We had 1 1/2" rain. Pond came up 4". Had some runoff, but not a lot. Marked everything again, pond is down 33 7/8" from full pool. Have rain in the FC again on Sunday. After that it's 10 dry days with 90+ degree temps. Hopefully then, I'll be able to see if it's working.
9 yr old pond, 1 ac, 15' deep. RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these. I think that's about all I should put in my little pond. Otter attack in 2023
