View a Simple External Rainwater Tank Gauge| Vertical Tank: (Mouse over arrows) | ||||||||||||||
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50 % Full 
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Filled to a depth of 1000 mm the tank contains a volume of 3141.59 litres Total Volume of tank 6283.19 litres Total Surface Area of tank 18.85 m² Circumference of tank 6283 mm |
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Calculate the Volume of a Horizontal and Verical cylinder in Gallons or Litres
A Simple External Rainwater Tank Gauge.
Use this calculator to calculate the
volume of Rainwater collected in your tank.
. Enter the amount of rain in mm and the collective Roof area.( Square metres )
Construction:
Obtain a length of clear plastic tubing ( diameter 10 mm ) to configure as per diagram.
Insert into opening at the top of the tank and lower to the bottom then form the desired u bend.
Fill tube with water and drop a coloured float ( anything that is inert and floats on top of the water. ) for easier viewing.
This tube can then be attached to a board which can be graduated.
To calculate the depth of water in your tank just measure the distance from the bottom of the tank to the level shown on your tube.
Enter this data into the calculator and you will get the remaining volume of water in your Tank.
Note: If you do not want to insert plastic tubing into your water tank then use a stainless steel tube which is inserted into the tank to the top of the tank and then attach your plastic tubing.
