Irrigation

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I know west of the Rockies you have to have irrigation rights to irrigate. The rights are based on the date of first use. My rights date back to 1872 which means I am golden. Less restricted east of the Rockies but you do need to check on that.
A pond that measures a quarter acre by 10 feet deep. Holds enough water to apply three quarter inch of water evenly over 40 acres.
 
Anywhere prior appropriation doctrine applies you need to have a water right to irrigate. This applies east of the Rockies for quite a ways to the east whether by stream diversions or ground water.
 
The future is save water and energy of irrigation pasture and crops.

Fields under 50 acres, solid set sprinkler irrigation or center pivot, both offer more savings (water and power).

A good irrigation project will consume 0.61 HP of energy per irrigated acre.

To know how much the operation of irrigation will be cost.

Imagine 25 acres, irrigated by sprinkler with flow up to 3,74 GPM.
The irrigation using a 7,5 HP Pumps.
Irrigation precipitation is 0,13" per hour.

We need irrigate around 4" of water per month or 0,13" every day on 25 acres,

The system irrigate 0,13" per hour with high water distribution.

If you irrigated 2.47 acre witch zone, the pumps will work 10 hours per day. independent of the irrigation cycle, which is the time between one irrigation and another.

And then, we have.

7.5 HP x 0,735 = 5,51 kw/hour.
5,51 kw/hour X 10 hours X 30 days per month = 1.653 kw of power to irrigate 24" of water per month.

Multiple 1.653 kw X kWh (our account power), maybe in Ohio is 0.13 USD per kWh.

1.653 kw X U$ 0,13 = U$ 214,00 divide by 25 acres = U$ 9,00 per acre irrigated only with power.

Keep calm, we have a goods news for America to irrigate pasture.

Is 5x cheaper than irrigation prices power in Brazil, but here we don't pay to use water, yet.
 

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Sorry Guys

Please, consider the double of cost per acre irrigated , as the correct pump is 15 HP and not 7.5 HP

Sorry, I have to convert metrical units to imperial units
 

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I know west of the Rockies you have to have irrigation rights to irrigate. The rights are based on the date of first use. My rights date back to 1872 which means I am golden. Less restricted east of the Rockies but you do need to check on that.
A pond that measures a quarter acre by 10 feet deep. Holds enough water to apply three quarter inch of water evenly over 40 acres.
What equation did you use to get the answer ?
 
What equation did you use to get the answer ?
It would seem logical that a 1/4 acre pond 10 feet deep is the equivalent of a 1 acre pond 2.5 feet deep. Therefore if you were to disperse that water over 40 acres it would now be 3/4" deep. So your 2.5' of water on an acre divided by 40 acres equals .0625 feet, or 3/4"
 
It would seem logical that a 1/4 acre pond 10 feet deep is the equivalent of a 1 acre pond 2.5 feet deep. Therefore if you were to disperse that water over 40 acres it would now be 3/4" deep. So your 2.5' of water on an acre divided by 40 acres equals .0625 feet, or 3/4"
Thanks
 
It would seem logical that a 1/4 acre pond 10 feet deep is the equivalent of a 1 acre pond 2.5 feet deep. Therefore if you were to disperse that water over 40 acres it would now be 3/4" deep. So your 2.5' of water on an acre divided by 40 acres equals .0625 feet, or 3/4"
So on a 1 acre pond 10 foot deep if was pumped completely dry would before it could recharge. In theory cover 40 acres with 3 inches of water. That sound about right ?
 
It might be useful to know that an acre inch of water is about 27,150 gallons. We use that number alot when figuring pump size.

For example a pump pumping 100 gpm (gallons per minute) could put an inch of water on over 5 acres in a 24 hour period. So 100gpmx60 minutesX 24hours=144,000 gallons. Divide that by 27,150=5.3 acres.
 

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