Hard to say if O2 loss is the proximal cause. 35" of rain can cause massive changes in water chemistry, temperature, and stratification, especially in small bodies of water.

Here's a back-of-the-envelope demonstration:

You have 0.25 ac and avg depth 10' for 2.5 ac/ft of water = 814627 gallons

30 in. of rain run-off = 814,627 gallons per acre

So for every one acre of drainage into your pond you could turn over the ENTIRE VOLUME.

EDIT: See https://water.usgs.gov/edu/activity-howmuchrain.html

Last edited by Bocomo; 09/20/18 01:36 PM.
Our old pond project (updated 4/11/17)
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