I'd place a 5 gal bucket in the pond in very shallow water. Fill it to the brim, and monitor rainfall vs. evaporation rate in the bucket vs. rainfall + runoff -evaporation and possible leakage in the pond. I will start that this weekend. Thanks!
12 yr old pond, 1 ac, 15' deep. RES, YP, GS, FHM (no longer), HBG (decreasing), SMB, and HSB (only two have been seen in 5 yrs) I think that's about all I should put in my little pond. Otter attack in 2023.
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