WINTER
EQI11UVL ENTS
(Approximate)
The following equivalents show the rela-
tionships between the volume' and weight of
water and between the volume and speed of
flowing water.
VOLUME AND WEIGHT
*One inch of rain falling on one acre of
ground is equal to about 27,154 gallons and
weighs about 113 tons. I
Here is how these amounts are deter-
mined:
One inch of rain falling evenly over one
acre (43,560 square feet) of ground amounts
to a total of 3,630 cubic feet or 27,154 gallons
of water (one cubic fo water s 7.48
gallons). A cuic foot of water weighs about
-2,.4 innp,, and a gallon of water weighs
about 8.3 pounds. Therefore, the weight of one
inch of rainfall spread evenly over an acre of
ground is about 226,390 pounds or 113 tons.
*One acre-foot of water (the amount of
water covering one acre to a depth of one foot)
equals 326,000 gallons or 43,560 cubic feet of
water, and weighs 2.7 million pounds.
*One cubic mile of water equals 1.1 tril-
lion gallons, 147.2 billion cubic feet, or 3.38
million acre-feet, and weighs 9.2 trillion pounds
(4.6 billion tons).
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