Water under liner

[Dkwiland]

Good afternoon all. I was wondering if someone has experience with water getting under the liner and creating a "bubble" (not air). I am new to the pond experience and have found there is a flaw in my design but I do not know where/ how to fix. It won't let me attach pictures because the file is too large but I'll try to explain. In my front flower bed I dug out a spot and used a 10x13ft liner. I have a constant running pump and water fall feature made out of a livestock water bowl. Up until now the pond was doing well but today after a storm I went out and found that a large amount of water (I assume) has gotten under the liner, thus creating a large buldge/bubble. After putting more water into it (seemed low) the buldge is gone. We are wanting to get fish but if this is a constant problem I'm not sure it will be doable. Any help is appreciated!

 

[j.w]

@Dkwiland
I've never had this issue but I know others here have and will know what to tell you to do.

 

[Dkwiland]

View attachment 129742@Dkwiland
I've never had this issue but I know others here have and will know what to tell you to do.

Thank you. Do you know how I can attach pictures to help visualize. My pictures are too large to load from my phone.

 

[j.w]

I don't do it from a cell phone. I do it from my desktop and pictures are saved to my computer. I use the Attach files link you see on the bottom of your post while you are posting. Click on Attach files and choose where the photo is and click open and then choose full image. Somebody who does it from a cell phone can help better.

 

[IPA]

When you choose the image icon, then choose the image at the bottom of your screen on iPhone at least, it tells you the image size with the option to choose image size with actual, small, medium and large. I always use medium.

 

[poconojoe]

Is it rain water that is getting under the liner or ground water from an underground spring or something?
If it's rain water flowing toward your pond, can you create a slight berm of soil all around your pond to guide the water away? You can pile rocks on and around the berm to conceal it and protect it from erosion.
How much extra liner is there? Can you create the soil berm under the extra liner?

 

[IPA]

There was a similar post recently and the solution was to use pvc pipe between the liners; I guess the pressure forces the water out through the pipe.

 

[Mmathis]

Hello and welcome! It’s called a water hippo.

 

[GBBUDD]

If you have water running toward your pond that could be the cause the water found a weak spot and is now under the liner where water inside the pond and water outside the pond have the same Weight. the water under the line can develop pressure thus creating your HIPPO. It can be an easy fix but you need to get a hole/ trench down to the bottom of the pond closest to the HIPPO. Water takes the path of least resistance so if you have a hole dug close to the hippo and place a pipe a hose a opening down to the water it will raise on it's own due to the water in the pond pushing down on the liner simple action reaction.

 

[Countrylivin704]

I had that problem, I fixed it by putting cement blocks on the bubble, then added potted water plants on top of the cement blocks.

 

[Mmathis]

There was a similar post recently and the solution was to use pvc pipe between the liners; I guess the pressure forces the water out through the pipe.

I recall that post! I solved the problem by rebuilding my pond and having it be a little bit above ground level (high water table here) — a great solution, though not a practical one for the OP.

 

[Dkwiland]

Thank you all. Some great ideas. Yes I believe it's rain water coming in. I thought about a berm type but the sidewalk is so close there isn't room. I think I'm going to try the concrete block making an island for a planter.

 

[AlyssaFish]

I heard about this happening in a pond-making video I watched a few weeks ago. Ground water gets underneath the liner and causes the bubble. They suggested placing large stones at the bottom of the pond to weigh down the liner and prevent the bubble from forming.

 

[WHockenberry]

I heard about this happening in a pond-making video I watched a few weeks ago. Ground water gets underneath the liner and causes the bubble. They suggested placing large stones at the bottom of the pond to weigh down the liner and prevent the bubble from forming.

Can you point me in the direction of that pond-making video?

 

[AlyssaFish]

Can you point me in the direction of that pond-making video?

I will try. I don't know how helpful it will be, but I'll scour my history to find it!