Fortunately, with innovations like cleverly-disguised waterfall filters that remove dangerous ammonia and nitrite to lightweight pre-built rock facades that take the backache out of building cascades and streams, adding a water feature to your pond is easier than ever.
Here are a few tips to remember as you plan your project:
The Proper Waterfall Pump
Determine head height by measuring the distance between where the pump will be resting and the highest point of waterfall. If your pump is at the bottom of a 2 ft deep pond and the top of the waterfall is 4 ft high, then your total head height is 6 ft.
An average waterfall, somewhere between a crash and a trickle, requires a flow rate of 100 gph per inch of waterfall or stream width. A waterfall that is 5 inches wide will need to pump with a flow rate of 500 gph.
Therefore, a waterfall that is 5 inches wide at a total height of 6 ft, will need a waterfall pump rated at 500 gph at 6 ft of head height. Refer to the manufacturer's pump charts to find the perfect pond pump for your new waterfall.
Lastly, when building a waterfall, make sure to grade any flat areas slightly tilting toward the pond for proper drainage, and of course take your time - it's a work of art in progress.