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Looking for advice on a lawn that has poor drainage.

Discussion in 'Landscape Maintenance' started by sandman512, Jul 3, 2011.

  1. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    You need to verify the rotors are properly nozzled.

    Don't have near enough information to suggest an appropriate schedule, but I can say with 100% certainty that irrigating every day at the run time you have indicated is WAY too much.

    Last week the net difference between ET and Precip was + 0.33 inches (ET) for NYC. Given the reported soil conditions, you didn't need to irrigate last week at all (6/27 - 7/3). Even if you did, and we assume an effective PR of 0.4 in/hour for those two zones combined, your total runtime for the entire week should have roughly around 30 minutes at best.
     
  2. sandman512

    sandman512 LawnSite Member
    Posts: 23

    Ok, checked the nozzles, they're all #7.
    What would you recommend my next course of action?
     
  3. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Nozzle them correctly if they aren't. What are the arcs for each rotor?
     
  4. sandman512

    sandman512 LawnSite Member
    Posts: 23

    Ok, have to be honest, lost me on the "arc" question.
     
  5. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    degrees of arc ...... 90, 180, 360 ....... etc......
     
  6. sandman512

    sandman512 LawnSite Member
    Posts: 23

    All 180', with the exception of the corner ones which are appx. 90' due to a swing set jutting out.
     
  7. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Then they are nozzled incorrectly. If we assume 50 PSI nozzle pressure you should be using a #4 red in the corners assuming a sprinkler spacing of 34' or less. You really need to draw a map showing the sprinkler locations and arcs, spacing, and nozzle pressure in order to nozzle it correctly.
     
  8. sandman512

    sandman512 LawnSite Member
    Posts: 23

    I will draw a map by hand and post it later on. Once again, THANKS!
     

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