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.
Weight of Imperial  Gallon of Water  1 gallon [UK] = 1.201 gallon [US, liquid]  One US gallon weighs 8.34 pounds, so an imperial gallon weighs  about 16.6 percent more, or â¦ almost exactly 10 pounds.. 21 people found this useful. The question and answer are locked and cannot be edited.o a gallon of salt water weighs 8.556 lbs.A pint's a pound, the world around.. That's a common expression. A pint is 16 fluid ounces and 16 fluid ounces of water weighs approximately 16 dry ounces. Two pints to the quart, four quarts to the gallon means eight pints to the gallon, so a gallon weighs about eight pounds.