Arbordale

Tips from the experts

Landscape & Gardening

Living with Deer in the Buffalo Landscape

Deer Resistant Ratings of plants

What is making holes in my yard?

Ponds -

Seasonal Pond Care Summary for Western New York

Simplest Spring Pond Preparation

How to determine Male or female Koi?

Lava Rock for filter media? What is best

Dividing, replanting aquatic plants

Building a pondless waterfalls

Seaming pond liner with 6" Cover Tape

Seaming pond liner with 3" splicing tape

Why Pond Shading or Dye is important

*Pond Calculations*

**Quantity of boulders for a pond**

Length x Width / 40 = Tons of boulders

1:2:1 RATIO:

For every 1 ton of 6”-12” boulders get 2 tons of 12” –

18” boulders and 1 ton of 18” – 24” boulders

**Quantity of boulders for a stream**

1 ½ tons for every 10’ of stream using a 1:2:1 ratio

**Quantity of boulders for facing a waterfall**

14” – ½ ton of mixed boulders

22” – ¾ ton of mixed boulders

30” – 1 ton of mixed boulders

40” – 1½ tons of mixed boulders

**Quantity of boulders for a retaining wall**

1 ton of 12” – 18” boulders will cover 10 linear feet

1 ton of 18” – 24” boulders will cover 5 liners feet

**Calculating Approximate Water Volume**

Avg. Length x Avg. Width x Avg. Depth x 7.48 = ___

**Calculating Approximate Water in Motion**

Length x Width x (0.25x depth of water) x 7.48 =___

**Calculating Gallons Required in a Basin**

Total Gallons in Motion x 2.5 = Desired Basin volume

**Basin Matrix Capacity**

Large Matrix – 4.3 cuft. Holds 32 gallons

Small Matrix – 2.3 cuft. Holds 17 gallons

**Example of pondless waterfall basin sizing:**

Use the formula :

Length of waterfall x width of waterfall x (0.25 x Depth of water) = how many cubic feet of water you need running down your waterfall, also called water in motion.

Of course, we don't normally measure water in cubic feet. There are 7.48 gallons per cubic ft of water. Muliply how many cubic feet of water from the formula above x 7.48, and you will have how many gallons of water you need.

To find out how much water you need for the entire system, multiply the amount of water in motion you need x 2.5. This will give you enough water to keep the pump submerged at all times, and not have an overflow when the pump is turned off.

Here is an example:

Length = 10ft Width = 3ft Depth=.5 inch

Calculate Water in Motion: L x W x (0.25 x D) x 7.48

10 x 3 (0.25 x 0.5) x 7.48 = 28.05 gallons

Calculate Total Amount of Water: Water in motion x 2.5

28.05 gallons x 2.5 = 70 gallons

This means that you need a reservoir that can hold 70 gallons of water! For pondless waterfalls, water matrix are a great way to store larger volumes of water in a smaller footprint, which gives you more flexibility on design.