How to Make Rain Gauge

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    • 1). Tape the plastic ruler to the outside of the jar using the waterproof tape. Make sure that the bottom of the ruler is lined up with the bottom of the jar. If the ruler is placed incorrectly, you will not get an accurate measurement.

    • 2). Secure the sandbags around the jar to prevent it from tipping over. Wind and rain often come together, and the jar will easily tip over without something to hold it in place.

      Alternately, measure rainfall for several days by digging a small hole with your hand shovel. The hole should only be about as deep as half of the length of the jar. Place the jar into the hole, with the top half sticking out above the ground. You do not need to attach the ruler for this, as you will not be able to measure the water until you remove the jar from the ground.

    • 3). Measure rainfall for a longer period of time by taping a clear plastic yardstick to a 1-gallon clear-plastic bucket. As before, make sure the bottom of the yardstick is aligned with the bottom of the bucket for accurate results. Do not place the bucket near tree limbs or anything that will affect the amount of rainfall that will be caught in the bucket. Make a marking on the side of your container with a waterproof marker regularly in case the bucket or jar tips over or the tape fails.

    • 4). Place the sandbags around the clear plastic bucket to keep it in place. Doing this will allow you to measure the rainfall on a daily basis and then add the totals together to calculate the amount of rainfall in the whole month.

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