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.
How many ounces does one gallon of water have? 1 gallon has 128 fluid ounces in it, regardless of what substance may be in it. Its weight depends on whether there's anything in it, and what the substance is. If the galâ¦lon happens to be full of water, then it weighs about 8.3 pounds (on Earth), but even that depends on the temperature.