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Hydro-Electric Chart

Use this chart to roughly tell how much
power your stream or river will generate.

Power Output (watts)
	Flow Rate (GPM)
	5	10	15	20	30	40	50	75	100	150	200	300
Head (feet)
5				5	8	10	15	20	30	40
10			7	12	18	23	30	45	60	80	100
15	5	10	15	20	30	40	50	75	100	125	150	200
20	8	16	25	32	50	65	85	125	170	210	275	350
30	12	25	35	45	70	90	120	180	240	300	400	500
40	16	32	48	60	95	125	160	240	320	450	600
50	20	40	60	80	120	160	200	300	400	600
75	30	60	90	120	180	240	300	450	600
100	40	80	120	160	240	320	400	600
150	60	120	180	240	360	480	600
200	80	160	240	320	480	640
300	120	240	360	480	720
400	160	320	480	640