ᐅ The garden pond is overflowing into an unknown area. How can I find out where the water is going?
Created on: 25 Feb 2022 15:38
A
ateliersiegel
For a few years now, we have had a house on a slope and feel comfortable living in it.
On the east side, there is a small attached pool where goldfish live.
When it rains, water flows into it, but it never gets any fuller than usual – which means there is an overflow or a leak somewhere.
I’m surprised that it is even that watertight (considering how it looks), but it is. 😎
The wastewater does NOT go into the public sewer system but seeps away somewhere... I have no idea where that could be...
and unfortunately no idea how to find out.
When it rains and the water (presumably) flows somewhere in the garden, everything is everywhere wet, and I can’t tell if the moisture might be coming from the pool or from the rain.
The garden is about 600 sqm (6,458 sq ft) (visible in one of the aerial photos).
I once emptied the pool almost completely (the fish and newts were temporarily kept at the neighbor’s), but the bottom is quite muddy (with lotus plants blooming repeatedly), and I couldn’t find any outlet (which should actually be at the water level).
As long as it works this way, that’s fine, but I would really like to know where the excess water goes.
I assume there is no trick (like with a bicycle tire, submerging it in water to find the leak), but I still want to give it a try: Does anyone have an idea how I could solve this mystery?
On the east side, there is a small attached pool where goldfish live.
When it rains, water flows into it, but it never gets any fuller than usual – which means there is an overflow or a leak somewhere.
I’m surprised that it is even that watertight (considering how it looks), but it is. 😎
The wastewater does NOT go into the public sewer system but seeps away somewhere... I have no idea where that could be...
and unfortunately no idea how to find out.
When it rains and the water (presumably) flows somewhere in the garden, everything is everywhere wet, and I can’t tell if the moisture might be coming from the pool or from the rain.
The garden is about 600 sqm (6,458 sq ft) (visible in one of the aerial photos).
I once emptied the pool almost completely (the fish and newts were temporarily kept at the neighbor’s), but the bottom is quite muddy (with lotus plants blooming repeatedly), and I couldn’t find any outlet (which should actually be at the water level).
As long as it works this way, that’s fine, but I would really like to know where the excess water goes.
I assume there is no trick (like with a bicycle tire, submerging it in water to find the leak), but I still want to give it a try: Does anyone have an idea how I could solve this mystery?
ateliersiegel schrieb:
When it rains, water flows in there, but it never fills beyond a certain level – which means there is an overflow or a leak somewhere. The “pond” is directly filled by the visible downpipe, and despite continuous rain, it always maintains a maximum water level and does not overflow?
In picture 3, there appears to be an overflow in the first chamber.
Maybe the water flows over the three chambers and then back through the effectively interrupted downpipe on the façade.
Or where exactly is the maximum water level?
ateliersiegel27 Feb 2022 06:29Over the years, the pond was filled through the single vertical pipe on the left side. For about a year now, we have also redirected the water from the second half of the roof to the same pipe (the pipe coming from the right). The three chambers are out of use (they have internal leaks), there is no visible outlet—and yes, the water level always stays the same and never rises beyond that point.
ateliersiegel schrieb:
and: yes, it always stays at the same height,Then take a pump and drain a few hundred liters (hundreds of quarts), and you’ll find the “overflow” for sure. Or should I come by? 😀
ateliersiegel28 Feb 2022 10:54driver55 schrieb:
vacuum up a few hundred litersI have already done that, but stopped before completely emptying it (because it became too complicated).
KingJulien28 Feb 2022 11:20driver55 schrieb:
Or should I come over? 😀But bring beer, just in case it takes longer.ateliersiegel schrieb:
I already did that, but stopped before fully draining completely (because it became too complicated)You’re speaking in riddles. A (submersible) pump doesn’t care whether it runs for 0.5 hours or 5 hours.But you only need to check the overflow; the “pond” doesn’t have to be empty for that. 🙄
If the water level is, for example, always 14 cm (5.5 inches) below the top edge, there must be something at that height limiting the fill level!
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