Wind Mill Pumping Capacities
(Average wind speed of 10 - 15 mph)

Diameter
of
Cylinder
(Inches)
Pumping
Capacity
(Gallons per Hour)
Wheel Diameter

Pumping Elevation (Feet)
  8-ft - 16 ft 8-foot 10-foot 12-foot 14-foot 16-foot
1 3/4 150 185 280 420 600 1000
1 7/8 180 175 260 390 560 920
2 190 140 215 320 460 750
2 1/4 260 112 170 250 360 590
2 1/2 325 94 140 210 300 490
2 3/4 385 80 120 180 260 425
3 470 68 100 155 220 360
3 1/4 550 58 88 130 185 305
3 1/2 640 50 76 115 160 265
3 3/4 730 44 65 98 143 230
4 830 39 58 86 125 200
4 1/4 940 34 51 76 110 180
4 1/2 1050 30 46 68 98 160
4 3/4 1170 ... 41 61 88 140
5 1300 25 37 55 80 130
5 3/4 1700 ... ... 40 60 100
6 1875 17 25 38 55 85
7 2550 ... 19 28 41 65
8 3300 ... 14 31 50 ...

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