Most pool owners will assume rain is going to lead to an immediate change in how much water is in the pool.
After all, if more water is added to the pool, this means the level is going to rise inside.
However, you might wonder, why doesn’t my pool overflow when it rains?
Your pool doesn’t overflow when it rains because it has a good pool cover, the pool is elevated, the pool has nearby blocks (i.e. hedges, fence), or evaporation during the day lowers the levels dramatically.
Each situation is different and you will have to assess based on what is happening in your pool.
It is important to understand the underlying reason for a pool not overflowing when it rains. You will want to keep tabs on the water level in the swimming pool to make sure nothing is leaking. This can also be a sign of trouble and you should get on top of it as soon as you can.
This guide is going to point out the main reasons a pool doesn’t overflow when it rains.
Table of Contents
Reasons Pool Doesn’t Overflow When It Rains
1. Good Pool Cover
The rain might not fill a pool because there’s a cover in place.
A pool cover is going to offer tremendous protection when it comes to the water’s quality, level, and how it looks.
You will want to look at investing in a good pool cover as soon as you can.
This investment works well when handling inclement weather and it is not going to be as costly as dealing with changing the water or repair work later.
Most pool owners will not have a pool cover, which exposes their fixture to inclement weather right away.
This is unsafe and it is not what you should be looking at doing for your setup.
2. The Pool Is Elevated
How is the swimming pool set up in the yard?
You will want to look at setting it at the right height, which is possible when you are installing the swimming pool in the yard and working through a detailed layout.
However, if your pool is already installed, you will want to look at the layout of the area around it.
Is it elevated?
This is a clear reason the water is not overflowing from the pool. The elevated nature of the pool might make it harder for the rain to collect in the swimming pool.
In general, the way a pool is set up will dictate how inclement weather affects it.
You will want to take the time to assess this and pay attention to the raindrops going into the pool. How is it impacting the pool’s level?
3. The Pool Has Nearby Blocks
Are there nearby blocks for the swimming pool?
This is a common reality when it comes to a swimming pool in the yard. You might have a situation where the pool has nearby blocks.
This means the pool is surrounded by elements such as a fence and/or hedges.
The reason this helps is it protects against blowing rain. Unless the rain is falling straight at the pool, it is not going to increase its level as dramatically as it would in an open yard.
It is these subtle differences that can impact how a pool fills up after it rains.
You will want to observe how the rain falls in the pool and then see how much of it is getting blocked by the way your pool is set up.
4. The Water Levels Remain Low Due To Evaporation
This is one of the most common reasons for a pool not getting filled with water during a rainstorm.
In general, a pool is going to have water in it.
This water is going to be exposed to the environment whether it is raining or not. It does not stay at the same level when it is exposed.
When the sun is out, it is going to evaporate at a specific pace. This will also change at different times of the day.
If it is hotter, it will also evaporate during the night.
As a result, you might think the pool has a specific amount of water when it does not.
Why doesn’t my pool overflow when it rains?
A pool does not overflow when it rains if the water evaporates quickly during the day, there are blocks in the way (i.e. fence, hedges), the pool is elevated, and/or there’s a solid pool cover installed.
These are just some of the reasons that a pool is not going to fill up when there is a rainstorm in the area.
You will also want to look at potential leaks in the pool and see if the pool pump is functional in the state it is right now. This can also affect how the swimming pool manages rainwater.