# Why is a rain gauge placed in a flat open place?

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Improper placement of your rain gauge can affect how much precipitation is falling into it. … This can change the amount of precipitation that goes into the rain gauge. That’s why it’s important to make sure that the rain gauge is placed in an open area so that it can show an accurate measure of the precipitation.

## Why is the rain gauge placed in an open flat ground?

Rain gauges should be placed in an open area where there are no buildings, trees, or other obstacles to block the rain. This is also to prevent the water collected on the roofs of buildings or the leaves of trees from dripping into the rain gauge after a rain, resulting in inaccurate readings.

## Why is a rain gauge placed 30 cm above the ground?

Rain gauge can accurately measure the rainfall without any loss due to evaporation. It is an instrument used for determining the depth of precipitation that occurs over a unit area. … For the measurement of rainfall, the rain gauze should be placed 30 cm above the ground to prevent the splashing of rainwater.

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## Where should you not place a rain gauge?

It can be mounted on a fence, or placed in your yard, but the most important thing that you’ll want to remember is to not place it next to a building, trees, or shrubs. This can affect how much rainfall is in your rain gauge. Improper placement of your rain gauge can affect how much precipitation is falling into it.

## How deep should a rain gauge be placed under the ground?

In open areas place the gauge top approx. 2 feet off the ground. In developed areas place the gauge top approx. 5 feet off the ground.

## How is rain gauge calculated?

Here’s what you’ll need to do:

1. Measure the diameter of the bucket at the level of the rain. …
2. Measure the diameter of the bucket at the bottom in the same way.
3. Calculate the average of the two diameters.
4. Divide by two to find the average radius.
5. Find the average volume of rain = Depth x radius x radius x 3.14.

## How accurate are backyard rain gauges?

Rainwise tipping bucket rain gauges have an accuracy rating of 2% at 1.5” per hour. … The National Oceanic and Atmospheric Association (NOAA) weather observer network, uses manual rain gauges with an 8 inch diameter opening. These are considered the most accurate, but are also more expensive.

## What size should a rain gauge be?

The standard United States National Weather Service rain gauge, developed at the start of the 20th century, consists of an 8-inch diameter (203 mm) funnel emptying into a graduated cylinder, 1.17 inches (29.7 mm) in diameter, which fits inside a larger container that is 8 inches in diameter and 20 inches (508 mm) tall.

## How much is a point of rain?

In January 1974 the Bureau of Meteorology made the conversion from recording rainfall and evaporation in points to millimetres (1 point = 0.254 mm, and 1 mm = 3.94 points).

## What are the basic rules for the installation of rain gauges?

The gauge should be installed 2-5 feet above the ground mounted on the side of a single post. The top of the rain gauge should extend several inches above the top of the mounting post. The mounting post should have a rounded, pointed, or slanted top to avoid upward splash towards the rain gauge.

## When should I empty my rain gauge?

To assure an accurate reading, the rain gauge should be placed in an open area away from trees, the house, and other outbuildings. Position the rain gauge twice as far away as the height of a tree or other object and be sure to empty it after every rain shower.

## What are the types of rain gauges?

The three major types of rain gauges are the standard gauge, tipping bucket gauge and weighing gauge.