Water math for a Southern Illinois corn crop.

Inches of rain we are behind in this drought:  14 inches for the year.

Gallons of water needed to produce 1 bushel of corn per acre: 4,000 US Gallons (some say more some say less but we will use this number) 

Gallons of water needed per acre to raise 150 bushel corn:  600,000 US Gallons per acre

Gallons of water in a 1 inch rain fall per acre:  27,154 US Gallons

Gallons of water in 14 inches of rain:  380,156 US Gallons per acre

Inches of water needed to reach our current growth stage (~R1): 13 inches of water per acre or 353002 gallons of water per acre (University of Nebraska Irrigation Guide To Corn) 

Inches of water needed to finish the crop out to maturity: 16 inches of rain per acre or 434,464 gallons of water per acre.  (University of Nebraska Irrigation Guide to Corn)  

Rainfall predicted in inches for the next 5 days:  0.25-0.5 inch of rain (NWS Hydrometeorological Prediction Center) 

Gallons of water in a 0.5 inch rain:  13,577 US Gallons

A half inch rain is hardly a drop in the bucket when your dry like we are and a flood when you saturated.

But I would gladly take a half inch rain right now……………..gladly.

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