Landscaping A Framework for Waterfalls with Liners

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Dig out the waterway from the spoil heap or bank next to the pond.

For steep waterfalls:

1) Divide it into a series of ponds, one dropping into another. Make sure the soil is well compacted (see below), allow space for a skeleton of concrete blocks to be laid that will define the watercourse. At each the blocks must be laid level (see below) apart from an outlet, at least 4 below the block level, for the water to flow out into the next level.

2) After cement is dry, backfill behind the blocks.

3) A 1inch layer of sand can be laid throughout the streambed. lay overlay over blocks.

4) Lay the hose for the pump along the most sensible route. Excavate a trench for it but do not backfill until you start to build the rockery.

TIP: Work up from the bottom, ie. water level of the pond. Dont get to ambitious, streams work out very expensive.

Make sure the face of the waterfall is well back behind the end of the side blocks at that level.

4or 6 concrete blocks

sand, stream liner , pond Liner ,

Water level remember when the water is flowing the level can rise by an inch in the ponds and over the outlet shelf.

The watercourse can in theory be lined with pieces of liner overlapping. You do use a lot less and it is fail safe to use one piece, draping it right into the pond.

Beware ... if this slope is created from the spoil of the pond, unless it has been consolidated for 18 months or more there is bound to be a further drop in level. Soil doubles in volume on excavation. Therefore 1) consolidate the soil as much as possible. 2) when constructing the waterfall framework, tilt each unit towards the outlet ie. build each pond higher in the back. OR build the blockwork up from solid unworked ground or footings.

Sand, pond

Blocks ... Brick or blocks

Hose should be as large as the proposed pump can take.