## How do I calculate what size basin I need for a pondless waterfall? | Decorative Ponds & Water Gardens Q & A

Q: How do I calculate what size basin I need for a pondless waterfall?

Robert – Waverly, TN

A:  With the help of a few friends, installing a pondless waterfall is an easy way to upgrade your land- or waterscape. If you are planning to design and build your own feature, here’s how to do the math to determine your basin size.

Step 1: Calculate total amount of water in your stream

Sound tricky? It’s not. To calculate the water that’s in motion in your stream, first measure your stream’s length, width and depth. Then plug those numbers into this equation: L x W x (0.25 x D of stream, generally 1 to 2 inches) x 7.48.

Here’s an example. If your stream is 25 feet long, 2 feet wide and 1 inch deep, the equation would look like this: 25 x 2 x (0.25 x 1) x 7.48 = 93.5 gallons.

Step 2: Calculate amount of water your basin needs to hold

As a general rule, you will need your basin to hold 2½ times the amount of water in your stream. To find out how much water your basin will need to hold, multiply the gallons of water in your stream by 2.5. In the above example, it would be 93.5 x 2.5 = 233.75 – so your basin would need to hold 233.75 gallons of water.

Step 3: Determine the size basin needed to hold the water

Here’s where things get a little tricky. You’ll likely use boulders, stones and other décor in your design. Well all that rockwork will take up space for water, and so you’ll need to go with a larger vessel.

Try this quick equation that will help you determine what size basin you’ll need with boulders: L x W x D x 2.2 = gallons of water the basin will need to hold. To give you an idea, a 5 foot by 10 foot basin that’s 3 feet deep and contains stone will hold 330 gallons of water.

A space- and cost-saving option is to use a basin matrix in place of some of the boulders. A basin matrix is a strong, 27-by-16-by-17½-inch hollow box that’s perforated with half-inch holes to allow water to collect and pass through. You can stack them together and landscape right over them. Each basin matrix holds 31.5 gallons, adding valuable water volume without increasing the size of the basin. Don’t forget to add a pump vault for easy access to your pump.

Go with a Kit

If you aren’t trying to customize a large waterfall, consider investing in a pond free waterfall kit, like PondBuilder™ Cascading Falls Pondless Kits. They contain all components you’ll need – from underlayment and liner to a waterfall box, pump, basin matrix and plumbing – with predetermined dimensions to help you create your water feature.

Pond Talk: What’s the largest size boulder you’ve installed in your water- or landscape?

## I would like to build a backyard pond. What do I need to know? | Decorative Ponds & Water Gardens Q & A

Q: I would like to build a backyard pond. What do I need to know?

Carolyn – Jackson, TN

A: Are you dreaming of summertime landscaping projects? Yep, we are too. With the cold season upon us, there’s nothing like some backyard pond planning to warm up those chilly days and get excited about diving in to your favorite hobby.

Whether you plan to build a half-acre pond with a recirculating stream and fish, expand on your existing feature, or install a petite 200-gallon in-ground aquatic water garden, you should consider these points as you design your backyard dream:

First of all, consider what kind of money you want to spend and develop a project budget. In most cases, the larger the water feature, the more expensive it will cost—but some of those top-of-the-line accessories for smaller features can cost quite a bit, too. If you need some help, call a pond-building professional in your area who can assess your needs and determine your budget.

Look for Higher Ground

Next, take a close look at your landscape and plan to position your pond on a high spot rather than a low spot. It might seem logical to locate your water feature in a valley, but it’s actually better to situate it on higher ground. This will prevent rainwater from running into your pond, which can cause water clarity and algae growth problems later on.

Size It Right

While you’re inspecting your outdoor space, consider what sized water feature will realistically fit within your existing landscaping. Do you have a large yard and want to go big? Do you have a small space that’s perfect for a preformed pond with a small fountain? Perhaps the area is best suited for a pondless stream or waterfall. Many seasoned pond hobbyists have admitted that, in retrospect, they wish they had gone bigger with their initial designs …

Who will be enjoying your water feature? When planning your backyard pond, keep your audience in mind. If you have young kids running around the yard and safety is an issue, a pondless waterfall with no open body of water might be a good choice. If, however, you and your family have a passion for aquatic plants or fish, it would make sense to go with a traditional pond.

Go with a Kit

As you’re planning your backyard dream pond, make the process easier by buying a pond kit, which comes with everything you’ll need. Different kits are designed for different types of ponds. Here are three that we recommend:

• For a large waterfall with big sound: The RapidFlo™ Ecosystem Pond Kit is ideal for those who want a large waterfall or stream, lots of sound to drown out nearby noise, and a system with the capacity to deal with heavy debris from nearby trees.
• For fish lovers: The AllClear™ Ecosystem Pond Kit is designed for hobbyists who want their pond to be all about their fish, not a waterfall. It works well in yards with full sun exposure and few falling leaves.
• For easy maintenance: The Cascading Falls Pondless Pond Kit is perfect for busy people who want to enjoy the sights and sounds of running water but have little time to maintain a traditional water feature. It’s also well suited for small yards or families with children.

Have Fun with It!

The most important thing to know about planning a pond of your dreams is that you should have a great time doing it. You’ll enjoy this backyard feature for years, so do your research, think through these points, and spend time designing something that you’ll love!

Pond Talk: When you built your first pond or water feature, what inspired your design?

## What is a Pondless Waterfall? – Water Garden & Feature Q & A

Picture of a Cascading Pondless Waterfall.

Water Gardens & Features Q & A

Q: I really would love to add the sound of water to my backyard but I really don’t have the space for a full fledged water garden. I read a little bit about your pondless waterfall kits. Exactly how do those work? – Abby of California

A: Did you know you could have the sound of water without the pond? Well you can! A Cascading Pondless Waterfall is exactly what it sounds like…a waterfall without the pond.

Illustration of How a Cascading Pondless Waterfall Works.

How a Cascading Pondless Waterfall Works

The way it works is this: A basin is first dug into the ground and the waterfall is sculpted out of the land. The basin and waterfall will be covered with liner and underlayment to hole the water. The basin will hold a vault that contains a pump. Tubing will run from the pump to a waterfall box at the top of the waterfall. A Basin Matrix, rocks and gravel will fill the void in the basin. Once filled with water, the water will travel up from the basin to the waterfall box. The water will then travel back down the waterfall and disappear into the basin.

Benefits of a Cascading Pondless Waterfall

Besides providing the sights and sounds of a natural looking waterfall and stream, a cascading pondless waterfall feature offers many things a pond doesn’t:

Easier to Maintain: Because all of the water is contained in an underground basin, hidden from the sun, green water is never an issue. Also, no filtration (and the cleaning goes along with that) is necessary because there are no fish to care for.

Easier to Install: Since you’re digging a basin (basically a hole in the ground that will be covered with rocks and gravel) instead of a water garden (a well designed hole in the ground

with shelves and detailed stone work), it takes only a fraction of the time to build

Lower Initial Cost & Lower Energy Cost Potential: Cascading Pondless Waterfalls costs less than a full-fledged water garden. They actually start at \$619.99 so this is very easy on the budget. Also most Cascading Pondless Waterfall owners choose to run the waterfall only when they are there to enjoy it, minimizing electrical consumption where with a full fledged water garden, the pump must run constantly for the sake of the fish.

Safer: With no standing water, children can safely play in the stream and waterfall – with adult supervision of course.

If you don’t have a water feature yet but have been thinking about getting one, a Cascading Pondless Waterfall is great way to get your feet wet. With all of these benefits and the low cost to build, you simply can’t beat it.