Location! Keep your rain gauge in open areas as far away from obstacles as possible, whether trees, houses, or fences. Having your gauge level is another great way to keep the readings accurate. This will help rain from splashing out and to help with winds blowing.
Should a rain gauge be placed under a tree?
The rain gauge should be installed at a reasonable distance away from obstacles such as buildings and trees. For example, if a tree is 40ft. tall (taller than a two story house) the gauge should be placed at least 80ft.
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.
Where should I place my water gauge?
Place the gauge at least 2-5 feet off the ground on the side of a pole, with the top of the cylinder several inches above the top of the pole to prevent splash back. Make sure the top of the rain gauge is level.
Why should a rain gauge be placed above the ground?
The rain gauge is kept on a platform above the level of the ground to prevent the splashing of rain water.
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 often should a rain gauge be emptied?
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 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 do I choose a rain gauge?
The height of a rain gauge typically ranges from 5 to 20 inches, while the diameter of its cylinder ranges from 2 to 8 inches. It’s quite simple: the larger the cylinder, the more rain collected and the more accurate the readings are. If you live in an area where it rains a lot, a larger rain gauge is a wise choice.
What should I look for in a rain gauge?
Follow our advice and you’ll be rewarded with accurate and reliable rainfall measurements:
- Size Matters. If you’re in doubt between the Hellmann of 120 and 200 liters of capacity, go for the big one. …
- Choose the Right Design. …
- Check Your Surroundings. …
- Respect the Official Mounting Height. …
- Keep It Clean.
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).