Waterfall & Stream Flow Calculator
Estimate a starting waterfall flow target from the width of your spillway. This is a planning estimate; final pump selection depends on lift and plumbing losses.
Measure the opening where water flows over the waterfall.
Height from the pond surface to the waterfall top.
Your starting flow target
Important: This target is before pump lift and plumbing losses. Confirm the pump’s performance curve at your total dynamic head — vertical lift plus pipe, fittings, and other plumbing losses — before purchasing.