Water tower power generation I understand that one of the concerns with generating power from a water tower, allowing the falling water to turn a generator, is that if the water wasn't coming from a natural source, thus having to be pumped back up, that you would use more electricity to power the water pump than you generated. Is that correct? I'm just a dumb old country boy that has absolutely no book learning on physics, so I understand none of the math involved in calculating if this would work or not.
My idea is to weld a skeleton framed tower, 4 feet x 4 feet x 24 feet tall. Then at intervals install 4 feet x 4 feet x 1 foot deep reservoirs. There would be multiple outlets for water on each side of the resevoirs with nipples to direct the flow to each flow's water wheel, for which I would build using bicycle rims, which would be geared to a small generator, but also to do away with the concern of not generating enough electricity to pump water back up could the water pump not be ran by being gear driven from the spinning water wheels. 
Is this possible?
 A: Your invention sounds like a perpetual motion machine: using the fall of water from a tower to both generate electricity and pump the water back up to the tank again. Using the falling water to generate electricity and then pumping the water back up is done commercially, but more power is needed to pump the water back to the top than is generated by it falling down. The technique is used when there is a surge in demand and more power is needed instantly, but it is not a perpetual motion machine. Cheap, off peak power is used to pump water back up to the top when demand is low. Perpetual motion machines don't obey the 1st Law of Thermodynamics, which means they don't produce as much energy as is needed to operate them, so your falling water won't be able to pump itself back up again. Perpetual motion machines never work, because they have to obey the laws of physics. Your proposed tower should be able to generate electricity, but you will either have to pump it back up manually, get a wind turbine to do it, or find some other way. Your device sounds unnecessarily complicated.
A: 
but also to do away with the concern of not generating enough electricity to pump water back up could the water pump not be ran by being gear driven from the spinning water wheels. 

The electricity from the generator could not be enough to supply enough power to the pump to get all the water back up.  The absolute maximum amount of energy in the water that your generators could theoretically extract is just the potential energy they gain from being pumped to that height.
The absolute minimum amount of energy theoretically required to pump the water up to that height will be the same as the absolute theoretical maximum that the generators can extract.
The problem:  No pump or generator can even achieve those theoretical efficiencies. The generator will generate less than the maximum theoretical power from the waters potential energy.
The pump will require more power input than it is able to add to the waters potential energy.
At best if you had a 100% efficient generator, pump, and setup, the system could run itself indefinitely with no external energy input, but that is not physically achievable due to effects such as friction.  This is sometimes called perpetual motion of the third kind.
