how do i detect a leak in the sprinkler system?

hey there....few days ago i noticed that there is always a patch of water in the lawn. i think i have a broken pipe or soemthing.....how do i find out where the leak is coming from without digging up the whole yard? please email me at snipped-for-privacy@aol.com thanks!
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Make sure it isn't a low spot and water build up. After that....dig down - gently - where the water is Terry

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acutally it is a low spot....the land kind of slopes down... thanks for any help you can provide me.
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nospam wrote:

One way to check to see if you actually have a leak is to turn off all water then monitor your water meter, assuming you have one. Check it an hour later and if it has moved then you have a leak. If it hasn't moved you don't have a leak, just a low spot with accumulated water. If you do have a leak you are just going to have to start digging.
Don in Tracy, Calif.
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in
where
A little more information would be helpful.
Is the patch of ground wet *all* the time? Look at your water meter when the sprinkler system is off to see if it's moving.
When the sprinkler system is on, are there any particular zones that show a diminished output from any of the sprinkler heads? If so, which zone(s) and which sprinkler(s)?
Are you sure it's not a leaking valve? Sometimes grass will grow over valve access covers.
Finally, are you sure it's one of your sprinkler system lines and not the main water supply line to your house?
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