I dont know but it is a lot
There are a total of 58 rivers in Trinidad and Tobago all together. In Trinidad alone, there are 43 rivers. In Tobago there are 15 rivers.
No, all rivers are different and no two are the same. A river will differ in numerous ways - usually always by length, by water volume etc.
Add the length of all the faces together
volume is the width, height, and length multiplied all together.
Length
To determine the total length of all main rivers in the attribute table of the rivers layer, you would typically need to sum the lengths provided in the attribute table for each river. If you have access to GIS software, you can easily calculate this by using the field calculator or summary statistics feature. Make sure to check the units of measurement to ensure accuracy in your total length. If you need specific data, please refer to the relevant dataset or documentation.
Add together all the lengths and divide by the number of lengths that you added together.
There are many hundreds of rivers in new Zeakland, and you may find such lists on Wiki. The longest three in length order, are the Waikato, the Taieri, and the Clutha.
As a wild guess, England
Streams join together to become rivers. Then the water from the rivers and streams will eventually run into the ocean or a lake.
Find the length of all sides then add together.
This would be a river basin.