next method is Method 2: Streams/Water Sources.
These techniques also require no water source to be preformed, and are in fact one of the best ways to actually create a water source. They stand as the ability to materialize a more continuous and thus bigger stream of water, instead of a short-timed shot of water, like in the previous method.
You can preform these techniques in two forms:
1. Handseals
2. Charge Chakra in the Gut
3. Spit out a continuous stream of water.
or
1. Handseals
2. Charge Chakra in the air
3. Materialize a great mass of water from nothing and direct it at your opponent.
Since it's continues, it carries more force than a projectile, so if a stream jutsu is of the same rank as a projectile, although the initial collision would be equal, the stream would continue to push afterwards. It is also a great way to create a water source to manipulate afterwards.
Another great way of using it is, if the range of the technique allows, materializing the water right on top/around your opponent. If you preform it correctly, you could encase your opponent in water and drown him, or, if the opponent is using a lightning jutsu, it will cause your opponent to electrocute himself.
But there is a disadvantage, as noted by a mist01. Since you are continuously and actively delivering chakra and water, it will make you vulnerable or at least distracted to other jutsus. I know for a fact that Izuna enjoys disrupting people's jutsus whenever he has the chance. There is an advantage to continuous output of water (or wind, fire, etc), as you can push continuously, but it also means you're busy for a longer duration of time.
You can, at any point of the technique, dispel it and quickly focus on something else, but the danger remains, and you should be aware of it.
Questions? More uses you can think of?