How to read the water level gauge

A water level gauge can be used to measure the water level in a river. By taking regular measurements, you can record the changes in water level over time. The scale on the water level gauge is in centimeters (cm). Note that there are different types of water level gauges which differ slightly in their numbering (see the example below):

- here the comparison sketch of the water level gauges should be placed -

One type of water level gauge you can see on the below:

- here the sample image of the water level gauge should be placed -

The values 60 to 90 cm and a red "1" on top are visible. The red one represents 100 cm or 1 meter. On this example the water level gauge             indicates a value of 56 which means the current water level is 56 cm.

In the case that the water level of a river regulary rises above 100 cm there can be several similar water level gauges mounted on top or diagonally above each other (see example below). Then the number on top will give you information how high the level is, when the other             water level gauges are underwater.

- here the sample image of the water level gauges should be placed -

For example, if the water level is at the middle of the water level gauge with the red 4 the current water level will be 350 cm.