Once the liner is trimmed in this way, the edge of the liner can be raised slightly so that dirt can then be used to back-fill around the liner (figure C).Back-filling in this way fills the gap between the rocks and the edge of the coping shelf, and helps anchor the rocks around the pond. Once the dirt has been filled in, tamp it down well to help secure the dirt and rocks (figure D).
Once back-filling with dirt is complete, the liner can be trimmed again -- this time to within just a couple of inches from the rocks (figure E). The small amount of liner that remains will be concealed later by mulch and landscaping.With the liner given it's final trim, and all the rocks in place, the water garden is now essentially complete. All that remains is landscaping, planting and (if desired) the addition of pond fish. Heidi and Rick use an extension cord to plug the skimmer-pump into a nearby electrical outlet to verify that the skimmer and waterfall components are working. After a few seconds, water cascading from the waterfall (figure F) provides ample evidence that all the parts are working properly (figure G).
Later, an electrician will install a dedicated outdoor electrical-outlet for easier electrical access for the water garden components.
The placement of rocks within the waterfall can be adjusted to alter the sound of the water. For this particular water garden, the objective was a solid sheet of water falling directly into the pond -- for a deeper sound.
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