I used to have a sprinkler system around my foundation & used a pulsating sprinkler if I ever needed anywhere away from the house. But the foundation people told us to replace with soaker hoses & of course with water rationing, sometimes the only thing allowed. So I finally replaced the foundation sprinklers with soaker hoses, but now I don't know how much water is actually getting to the plants & foundation. Anyone know how to measure? The package said 3-4 hours on low pressure with the knob turned 1/4 turn, but I have an underground frostproof handle that just pulls up & is hard to determine the flow.