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To determine how long to run your sprinklers, place several empty, straight-sided cans or cups at different distances within one zone. (Uniform coffee mugs work well.) Run the sprinklers for 15 minutes and measure the amount of water collected in each can. Calculate an average water depth and determine how long it will take to apply a Â½ to Â¾ inch of water. Example: Â· Â¼â average depth of water after 15 minutes â water 35-50 minutes in that zone. Â· Â½â average depth of water after 15 minutes â water 20-30 minutes in that zone.
The top left red is the main water shut-off valve. The other red valve shuts off the lawn sprinkler system and the green valve is actually to drain the sprinkler pipes for the winter. Fixture Stop Valves. Another way to shut off water to a specific fixture, is by using the stop valves directly leading to that fixture. Look under sinks and toilets, behind washing machines or next to dishwashers and hot water heaters.