I have a large waterfall made of natural rock. Its 6.5 feet high and 7 feet across. The water outlet is a slot about 5 feet wide and 3/4 to 1 inch tall.
Forgetting pipe capacity and pump sizing for a minute, can anyone advise on an adequate flow rate for a waterfall this size? I am trying to create a strong, gushing flow; no trickling. I am hoping that someone else has a large water feature and can comment on how many gallons per minute their waterfall uses and if they are happy with that volume of water.