Of course, the main influence on streamflow is precipitation runoff in the watershed. Rainfall causes rivers to rise, and a river can even rise if it only rains very far up in the watershed-remember that water that falls in a watershed will eventually drain by the outflow point.
One US gallon of water weighs 133.526464 ounces. The calculations for that answer are below: 1 gallon = 8.345404 pounds 1 pound = 16 ounces 8.345404 X 16 = 133.526464.
There is a saying that A pint's a pound the world around.. There are 2 pints in a quart and 4 quarts in a gallon (check the supermarket dairy shelves). Therefore, a gallon of water weighs 8 pounds and 5 gallons weigh forty pounds. To lose one pound by weight reduction, you must lose a pint (or pound) of flesh or excess liquids. Losing forty pounds is like losing 5 gallons of flesh! Water weighs 8 pounds per gallon.