How to Choose a Pump Flow Rate for Streams

How to Choose a Pump Flow Rate

For Streams
(mimimum recommend flow rates for attractive streams
based on gravel depth and stream width)

Gravel Depth	GPH Per Inch of Steam Width	6" Width GPH	12" Width GPH	18" Width GPH	24" Width GPH	36" Width GHP
½"	50	300	600	900	1,200	1,800
1"	100	600	1,200	1,800	2,400	3,600
1½"	125	750	1,500	2,250	3,000	4,500
2"	150	900	1,800	2,700	3,600	5,400
3"	200	1,200	2,400	3,600	4,800	7,200
4"	250	1,500	3,000	4,500	6,000	9,000

Flow Rates ...
Calculations ...