Some water loss is expected, especially during hot, dry, windy weather or when a waterfall creates extra splash. A change in the pattern, frequent top-offs, or water loss that continues in cooler conditions deserves a closer look.
Track the pattern first
Mark or record the water level and note how often you add water. Compare the loss with weather, season, waterfall operation, splash, and recent maintenance. A rough weekly amount can provide context, but no single inch-per-week number proves whether the cause is evaporation or a leak.
Check the feature safely
Look for water escaping at edges, low spots, plumbing connections, stream dams, or places where splash is reaching the surrounding soil. Check whether the pump is moving water as expected and whether the water level is exposing the intake. Turn off power before inspecting electrical or pump equipment.
When to ask for help
Contact a qualified pond professional when the loss is rapid, the leak cannot be located, the liner or plumbing may be damaged, or the water is threatening nearby structures. Do not dig, cut the liner, or alter plumbing based on a guess.
FAQ
Does summer always mean evaporation?
No. Hot weather can increase evaporation, but splash, overflow, plumbing, liner, and edge problems can also cause summer water loss.
Can a small leak be hard to find?
Yes. A slow leak may be hidden by soil, plants, liner folds, plumbing, or a low edge. Track the loss and escalate if it continues.