| CONVERSIONS |
| 1 acre = 43,560 square ft |
1 mile = 5,280 ft |
| 1 acre-in = 27,154 gal (30,000gal) |
1 acre-in/week = 2.7gpm/acre (3gpm) |
| 0.11in/hr = 50 gpm/acre |
1 gal = 231 cu in = 0.137cu ft |
| 1 cu ft = 7.48gal |
1 gal = 8.33 lbs |
| 1 ft of water = 0.433 lb per sq in. |
1 psi = 2.31 ft of water, i.e. 10psi = 23 ft, and 100 ft = 43 psi |
| 1 Atmosphere (at sea level) = 14.7 lb per sq in = 34 ft of water |
1 Hp = 33,000 ft-lb/min = 0.746 kilowatts = approx 3/4 KW |
| Pump Hp = gpm x Total Head (ft) / 3960 x Pump Efficiency (percent decimal) |
| INFO |
| What do we need to know about your system?
|
| What is the flow rate (gpm)? Flow Test: Time how long (min) it takes to fill a known volume container (5 gal bucket). |
| What is the Pressure (psi)? Best to get this under a given flow. Take this during the flow test. Pressure will vary at different flow rates (higher flow = lower pressure, lower flow = higher pressure). |
| What is the water source (pond, well, municipal)? |
| What is the slope (1%, 2%, or greater)? 1% slope = 1 ft drop or rise per 100 linear ft. |
| What is the crop or feature? |
| What is the area (acres) and row and crop spacing? |
| What is the row length? Maximum |
| For a pump, what is the power source (PTO, Electric (1 or 3 phase), gas, well)? |
| What are the future plans? |
