What Is A Catch Basin Catch Basins 101?

Catch basins are designed to catch rainwater runoff from roofs and other areas. They are often found at the base of buildings or along streets where water would otherwise flow into storm drains.

Catch basins come in various shapes and sizes. Some are large enough to contain a car, while others are smaller and usually placed near sidewalks. The size of the basin depends on the amount of rainfall expected during a given period of time. For example, a larger catch basin can handle more water than a smaller one.

While catch basins are typically installed by municipalities, homeowners sometimes install them themselves. If you decide to build your own, here are some things to consider before you begin.

If you live near a body of water, you probably already know that storm drains collect rainwater and carry it away from your home or business. But did you also know that these drains can get clogged up with debris and cause flooding during heavy rains? This is where catch basins come into play.

A catch basin is basically a drainage system that collects runoff and directs it safely away from your property. They are installed throughout cities and towns to prevent flooding and other problems caused by excessive rainfall.

What Is A Catch Basin? Catch Basins 101

If you live near a lake or river, then you probably already know that water tends to flow downhill. This means that any water flowing into a lake or river flows from higher ground to lower ground.

When water flows out of a lake or river through a pipe or culvert, it heads towards lower ground. That’s where the water gets caught in a catch basin.

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Catch Basins 101 | What Is It, How Does It Work, & Maintenance

A catch basin is a large open area (usually concrete) that collects rainwater runoff. The catch basins collect rainwater runoff from rooftops and streets, and divert it away from city sewers. They also prevent flooding during heavy rains.

The catch basin should be located close to the lowest point on your property. It should be big enough to hold several inches of rainwater.

How To Install A Catch Basin?

The first step when installing a catch basin is to determine if there’s room for one. You should measure the area around your house and look for places where water might run off. These could be anywhere from the roofline to downspouts .

Next, figure out how much space you need for your new catch basin. This will depend on the size of the basin itself as well as the surrounding area. You may want to use concrete blocks or stones to create a retaining wall at the bottom of the basin. This will help keep soil from entering the drain pipe and causing blockages.

You can also add an overflow outlet so excess water won’t back up and flood your yard. Once you have determined the size of the basin you need, you’ll need to dig a hole for the drainpipe. Make sure to place the pipe deep enough so that it doesn’t hit any underground utilities like electrical lines or pipes.

Once the hole is dug, lay the pipe and cover it with gravel to protect it from damage. Then, pour concrete over the pipe to form a concrete pad. Next, dig another hole next to the pipe and fill it with gravel. Place the catch basin in this second hole and then cover it with concrete.

Finally, connect the two holes together using a piece of rebar. Use cement to seal the connection between the two holes. This completes the installation process. Now, all you have left to do is wait until it starts raining!

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How Do I Know Where To Place My Catch Basin?

There are many factors that go into choosing the right location for your catch basin. For example, a catch basin needs to be placed far enough away from buildings so that it doesn‘t become flooded during high-intensity storms.

It also has to be positioned above the highest part of your property so that it can handle heavy rainfall. If you don’t install a catch basin correctly, you risk having water seep into your basement or crawlspace.

Your local building department can provide more information about proper placement.

Can I Put A Catch Basin In My Yard?

Yes, but only if you have permission from your neighbors. Some cities require homeowners to get permits before they can install catch basins in their yards.

If you live in such a community, make sure to check with your city officials before installing a catch basin.

If you’re not required to obtain a permit, you can still install a catch basin without getting permission from your neighbors. However, you must ensure that it meets all code requirements.

To avoid flooding your yard, consider installing a large drainage system instead of a simple catch basin.

How Does a Catch Basin Work?

A catch basin collects rainwater and directs it through a drainpipe that leads to the sewer line. The drainpipe usually consists of a series of PVC pipes connected together. It’s important to note that these pipes aren’t designed to handle extreme amounts of water.

Instead, they’re meant to collect small amounts of water and direct them toward the sewer line. The drainpipes should be installed below grade level. If they’re located above ground, they could cause problems when there’s a lot of snow on the roof.

When it rains, the water flows down the drainpipe and enters the catch basin. Here, it drains out of the basin and into the sewer line.

When Should I Replace My Old Drain Pipe?

You may want to replace your old drainpipe after several years of use. This will help prevent clogs and other issues. However, you shouldn’t replace your drainpipe just because it looks worn.

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Rather than replacing an entire drainpipe, simply repair any leaks or cracks. You can find replacement parts at home improvement stores like Lowe’s or Home Depot.

How Much Water Will Go Into My New Catch Basin?

The amount of water that goes into your new catch basin depends on how much rain falls in your area. Your local building department can tell you exactly what size drainpipe you need.

In most cases, you’ll need a 3/4 inch pipe. If you live in an extremely wet area, you might need a 1-inch pipe.

How Long Can I Use My Catch Basin Before Installing Another One?

Most people install one catch basin per year. However, this isn’t always necessary. You can choose to install multiple catch basins over time.

For example, you could install two or three basins every few months until you reach your desired capacity.

Drainage 101: Everything You Need to Know About Catch Basins | GreyDock Blog

This way, you won’t need to worry about running out of space for additional basins.

Is Your Storm Drain Clogged?

If you notice that your storm drain is blocked, contact your local building department right away. They can unclog it for free.

However, they’ll probably ask you to pay for the service. To avoid paying extra fees, call a professional plumber.


Catch basins are essential for preventing flooding in your yard. But they also serve another purpose: collecting rainwater so that it doesn’t go directly into the sewer line. When choosing a catch basin, keep in mind its intended function as well as its location and design.

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