you could try something in the bathtub.....running the water into a cup with some skinny hose...just to see if water flow would force above the level of the faucet....obviously the water would flow if you kept the hose at the same level as the faucet....but as you raise the hose will it flow????....just an Idea
Actually, if you aim the faucet at the end of the hose, that probably would work. Somewhat. Sporadically, but it would spurt a bit.
You know, a better way to explain what i was saying before is this. The water in the river doesn't want to go any higher than the surface of the river, because gravity is exerting too much force holding it down. If you want to raise the water higher than gravity is allowing it to go, you need to use enough energy to counteract the force of gravity. Just constricting the pipe into a smaller diameter won't add any energy - you need to borrow some energy somewhere else, and what the Romans figured out was that you could borrow some energy from the
speed of the water. They figured out that the mass of the water, moving at a high rate of speed, created its own energy, and you could harness that energy by forcing the heavy body of rapdily moving water into a smaller space. That worked for them because they were working with tons, even hundreds of tons, of water, moving at speeds of 50 or more miles per hour. When that much water, confined in a tube, suddenly is forced into a smaller channel, it creates enough pressure to overcome the force of the gravity that's pulling it back downward.
That won't work for joesvx because he just doesn't have enough water, or any way to get it moving fast enough to overcome gravity. He's only working with a few pounds of water, moving 3 or 4 miles per hour. Such a small body of water, moving at such a low velocity, just can't build that kind of momentum, so it has no way of generating the energy to raise itself higher than gravity wants it to go. He needs a pump.