Finding water shut off valve for house.

[Nick Albin]

I am trying to located the main water shut off for the house. I need to replace the catridge and or washer for the shower faucet. I cannot seem to locate the water shut off. I would simply use the shut off for the shower if i could find one.

Its a one level house no basement. I went to the water heater and turned a valve. The hot water that was dripping out of the shower stopped leaking. BUt I still have cold water.

I looked around outside and couldn't seem to find anything.

Just looking for some help from more experienced guys.

also when i turn the valve that makes the hot water go off, if i turn it back on i hear rushing water. Its right on my water heater. would that just be the gas cut off?