must be really careful with the last step of the waterfall,
where it meets with the water garden basin. Water flows wherever
it can find a space. You must carefully check the folds of the
liner in order that some of the water does not spill out on
the sides of the cascade rather than go into the water garden.
The big surprise would be several thousands litres of water
missing after a few hours!!
It is not very easy to do. You may need to give it a few tries,
but it’s all worth it when you see the final result...
final decoration may be some rock-garden plants that you can place
between the stones on the edge of the waterfall.
water is supplied to the waterfall by a submerged pump in the
pond, as close as possible to the bottom of the waterfall. The
water is pushed up to the highest level of the waterfall through
a water hose approximately 2.5 cm in diameter.
first criteria to know to chose
the right pump is the maximum height the water
must climb (the pumping height). How do you calculate this
measurement? Here is a theoretical formula to help you :
Measure the distance between the surface of the water in
the pond and the highest point of the cascade.
Calculate the extra height necessary in function of the
length of the hose. For each 3 meters of hose you add 30
to 50 cm to your “height”. The difference in centimetres
is related to the diameter of the hose (30 cm= small diameter,
50 cm = large diameter).
Calculate the minimum pumping height = A+B
Calculate the maximum pumping height =
It is from that last basic value (D) that you can make the proper
choice for your pump. Refer to the manufacturers charts.
Often, the pumps have a pre-filtering device that you need
to clean out often if it is too small. Preferably chose
a pump with a larger filter or without any. A bigger pump
allows you more flexibility should you wish to add other
items later (fountain(s), water jets…).
these formulae are strictly theoretical and do not take
into account each make, or type of materials used. We cannot
be held responsible for a poor choice of pump.
It is placed beside the pond. The water is pushed with a pump,
the tilting bamboo spout fills-up with water and then tilts
and pours the water in the basin.
a waterfall benefits from a mound or a steeper slope, a stream
must be built on a slight slope.
as for the waterfall, plants and stones will give it a wilder
and natural look.
Dig the bed for the stream.
Put a layer of sand, then the geotextile felt, and then cover
it with the liner (exactly the same as for the pond).
Camouflage the liner with pebbles, flat stones and plants.
water fountain remains the easiest project to make. A water fountain
pump is generally commercially available and sold with all the
various accessories necessary.
However, do not place a water fountain too close to nymphea (water
lilies); their floating leaves and flowers cannot stand to be