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.
One gallon weighs from 5.8 to 6.5 pounds, depending on the temperature when yo â¦ u weigh it. Water holds similar weight properties as gasoline, so you may wish to test this by weighing one gallon of hot water and one gallon of cold water and taking the average. Don't measure, pour or heat gasoline!!