Irrigation gpm or gph

DaveBN · Sep 19, 2020

My math tells me that if I get one inch of rain on an 80 acre field that equals just over 15,000 gallons of water.
How long would you have to run your irrigator to put that much water on your field?
Just curious.
Dave

Pete in Holland MI · Sep 19, 2020

Depends on the size of the pump, sprinkler heads, distribution.

Simplest thing to do is lay several cake pans in the area and measure the amount of water they collect over a period of time......then do some math. That'll tell ya how long you need to run it to get a measurable amount of water on the ground.

IHRedRules · Sep 19, 2020

My math comes to ~2,100,000 gallons to put one inch of water on 80 acres. Irrigation types, pumps, etc will vary widely, but from my experience, it will take 24+ hours for a center pivot in my area to make a full pass. 2,100,000/24 hours/60minutes/hour= 1,450 gallons/min needed. Most wells I know of in the area produce 600-900 gpm.

2090 · Sep 19, 2020

one acre inch of water equals 27154 gal.

JMOR · Sep 19, 2020

(quoted from post at 12:43:40 09/19/20) My math tells me that if I get one inch of rain on an 80 acre field that equals just over 15,000 gallons of water.
How long would you have to run your irrigator to put that much water on your field?
Just curious.
Dave

ad math. See IHRED

DaveBN · Sep 19, 2020

Oops, my bad. I now come up with 181,000 gallons = one inch of rain on 80 acres. Am I still wrong?
Dave

JMOR · Sep 19, 2020

(quoted from post at 14:27:22 09/19/20) Oops, my bad. I now come up with 181,000 gallons = one inch of rain on 80 acres. Am I still wrong?
Dave

3,560sq ft/acre X 80 acres X 1/12 foot X 7.48 gallons/ cu ft= 2,172,192gallons

DaveBN · Sep 19, 2020

Oops again, guess I need to take 5th grade over again. Jeff Foxworthy here I come.

Irrigation gpm or gph

DaveBN

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Pete in Holland MI

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IHRedRules

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2090

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JMOR

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DaveBN

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JMOR

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DaveBN

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