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1). More water per acre increases Water and Chemical Input. Cost 900%!
2). Extra water means extra chemicals, Really! Good for Ag, Bad for farmers profits.
3). Our calculations are there is too much water, fertilizers, and chemicals used for
no reason which reduce profits for farmers!
4). The Formula is simple. Convert gallons to oz. divided by 34560 = oz. per plant.
5). NC A&T did a $300,000 bio-fuel canola study: 84-28-84 fertlizer 50% less had more production liquid yield than 168-56-168 100% fertilizer. Click Line For it!

According US GOV USGS Rain and Precipitation Calulations: The following equivalents show
the relationship between the volume and weight of water falling on 1 acre of ground at
1 inch to be 27,154 gallons and weighs about 113 tons.
There are 591 drops per oz.


8 Inch of water an acre

217,232 gal. acre

800 oz. square foot!

472,800 drops an square foot!

4 Inch of water an acre

108,616 gal. acre

400 oz. square foot!

236,400 drops an square foot!

2 Inch of water an acre

54,308 gal. acre

200 oz. square foot!

118,200 drops an square foot!

1 Inch of water an acre

27154 gal. acre

100 oz. square foot!

59,100 drops an square foot!

1/2 Inch of water an acre

13550 gal. acre

50 oz. square foot!

29,550 drops an square foot!

1/4 Inch of water an acre

6775 gal. acre

25 oz. square foot!

14,775 drops a square foot!

1/8 Inch of water an acre

3387 gal. acre

12 oz. square foot!

7,387 drops a square foot!

1/16 Inch of water an acre

1693 gal. acre

6 oz. square foot!

3,693 drops a square foot!

1/32 Inch of water an acre

846 gal. acre

3 oz. square foot!

1,846 drops a square foot!

1/64 Inch of water an acre

423 gal. acre

1.57 oz. square foot!

923 drops a square foot!

1/128 Inch of water an acre

212 gal. acre

.785 oz. square foot!

461 drops a square foot!

1/256 Inch of water an acre

106 gal. acre

.382 oz. square foot!

230 drops a square foot!

1/512 Inch of water an acre

53 gal. acre

.196 oz. square foot!

115 drops a square foot!

1/1024 Inch of water an acre

25 gal. acre

.0982 oz. square foot!

57 drops a square foot!

1/2048 Inch of water an acre

10 gal. acre

.0481 oz. square foot!

28 drops a square foot!



Weight of Water per Acre from One Inch of Rain

Llewellyn L. Manske PhD, Range Scientist

North Dakota State University, Dickinson Research Extension Center


Water is an integral part of living systems and is essential for plant and animal life. Water in the form of precipitation is unevenly distributed over the land. Each inch of rain is relatively heavy. One inch of rain on a square foot of land weighs 5.20 pounds. One inch of rain on one acre of land weighs 113.31 tons.

The purpose of this report is to explain two procedures to determine the weight of one inch of rain on one acre of land.

The first approach determines the number of cubic inches of water on one acre and the weight in pounds of one cubic inch of water, then uses these values to determine the weight of one inch of rain on one acre. One acre is one rod wide and one-half mile long. A rod is 16.5 feet. A mile is 5280 feet, and a half mile is 2640 feet. The number of square feet in an acre is 16.5 feet times 2640 feet, which equals 43,560 square feet per acre. There are 144 square inches in a square foot. The number of square inches per acre is 43,560 square feet times 144 square inches, which equals 6,272,640 square inches per acre. One inch of rain times 6,272,640 square inches per acre equals 6,272,640 cubic inches of water per acre. One pint of water weighs one pound (1.04316 lbs/pint). One gallon of water weighs 8.3453 pounds. One cubic foot of water contains 7.48052 gallons. The weight of one cubic foot of water is 7.48052 gallons times 8.3453 pounds, which equals 62.42718356 pounds of water per cubic foot. One cubic foot contains 1728 cubic inches. The weight of one cubic inch of water is 62.42718356 pounds divided by 1728 cubic inches, which equals 0.036126842 pounds of water per cubic inch. The weight of one inch of rain on one acre of land is 6,272,640 cubic inches of water per acre times 0.036126842 pounds of water per cubic inch, which equals 226,610.6763 pounds of water per acre. There are 2000 pounds in one ton. The weight of water per acre, 226,610.6763 pounds divided by 2000 pounds per ton, equals 113.3053382 tons of water in one inch of rain on one acre of land.

The second approach determines the number of gallons in one inch of water over one acre and then determines the weight of that number of gallons of water. One cubic foot of water contains 7.48052 gallons. There are 1728 cubic inches in one cubic foot. The number of gallons of water in a cubic inch is 7.48052 gallons divided by 1728 cubic inches, which equals 0.004329005 gallons per cubic inch of water. There are 6,272,640 cubic inches of water on one acre. This value times 0.004329005 gallons per cubic inch equals 27,154.2876 gallons of water per acre. One gallon of water weighs 8.3453 pounds. The weight of water per gallon, 8.3453 pounds, times 27,154.2876 gallons of water per acre equals 226,610.6763 pounds of water per inch of rain on one acre. This value divided by 2000 pounds per ton equals 113.3053382 tons of water per acre.

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