To check the amount of water loss due to evaporation and to compare that to the water loss in the pond, we did a 72-hour bucket test to measure how much the pond water level went down compared to the level of the water in the buckets.
Procedure
1) We placed buckets of pond water in the pond (to equalize the temperature) and marked the starting level in the buckets and also marked the starting level in the pond (on the white pvc pump intake pipe). See pictures.
2) After 72 hours, we measured the level of the water in the pond and in the buckets. The bucket level went down ~15mm and the pond went down ~15mm too (~5mm/day). We concluded that, since the water levels went down proportionally, the water loss in the bucket and in the pond was due to evaporation only and there was no additional loss in the pond. So… no leaks!
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| Pond Water Level |
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| Bucket leak test |
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