Your bathtub may be bigger than mine. So, measure length times width times depth of the water and multply by 7.5 to get the amount of gallons in your tub... or any other vessel.
That depends a great deal on the type and size of tub as well as on how deep you fill it. Most people are not going to fill the tub up as much for small children as they will for an adult and a...
There is no such thing as an average river.
Rivers vary in size (width), length and depth. Additionally, it would also depend on the time of year. Springtime when ice melts (as in the Colorado...