# Best answer: How much is one inch of rain in gallons?

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## How many gallons are in an inch of rain per square foot?

Every square foot of roof space collects . 6 gallons of water in a 1 inch rainfall.

## How many gallons is 40 inches of rain?

Amount of Rain Falling on Your Property

If you own a single acre of property, that 40 inches of rain means your property receives over 1 million gallons of rain per year. That’s right.

## How much volume is an inch of rain?

A standard Weather Service rain gauge is a cylinder eight inches in diameter, so one inch of rain would have a volume of about 28 ounces or about three cups.

## How many gallons are in an inch?

Rosemarie, There are 231 cubic inches in a US gallon. Hence if you have a volume in cubic inches, for example 3675 cubic inches you can convert it to US gallons by dividing be 231. Hence 3675 cubic inches is 3675/231 = 15.9 gallons.

## Is an inch of rain a cubic inch?

An acre of ground contains 43,560 square feet. Consequently, a rainfall of 1 inch over 1 acre of ground could mean a total of 6,272,640 cubic inches of water. This is the equivalent of 3,630 cubic feet. … Consequently, a rainfall of 1 inch over 1acre of ground would mean 27,143 gallons of water.

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## Is 1 inch rain a lot?

1/2 (0.5) of an inch of rain – A light rain never reaches this amount, moderate rain for 1-2 hours or heavy rain for 30-45 minutes. … One (1.00) inch of rain – A light moderate rain never reaches this amount, heavy rain for several hours (2-5 hours).

## What does one inch rain mean?

Rainfall amount is described as the depth of water reaching the ground, typically in inches or millimeters (25 mm equals one inch). An inch of rain is exactly that, water that is one inch deep. One inch of rainfall equals 4.7 gallons of water per square yard or 22,650 gallons of water per acre!