For you pump guys

Discussion in 'Irrigation' started by alf51175, Jun 27, 2007.

  1. alf51175

    alf51175 LawnSite Member
    Posts: 35

    Bidding a job that is lake property and uses a pump from the lake to supply everything for the house that is not potable use (drinking, bath, etc.). I am not familiar with pump specs.Has a 1 HP jet pump in place now and does ok. The house and most of the lawn are 25 to 30 feet above the grade of the pump. Question is how much pressure and gpm loss will the be up the grade and will the 1 horse do the job? Thanks for any input.
     
  2. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    How big is the lawn?
     
  3. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 48,017

    Figure 13 psi loss from elevation rise of 30 feet.
     
  5. drmiller100

    drmiller100 LawnSite Senior Member
    Posts: 562

    1 horse with 30 feet of lift is plenty to do a reasonable sized lawn. as a guess, 15 gpm.
    one local lake here turns green in august with algae, so you have to run maxi paws on that lake.
     
  6. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

  7. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

  8. alf51175

    alf51175 LawnSite Member
    Posts: 35

    Thanks guys knew I could depend on you.
     
  9. drmiller100

    drmiller100 LawnSite Senior Member
    Posts: 562

  10. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

    That is why I posted the link to the calculation first. The chart gives you a best case scenario starting point at 60 degrees for a given flow rate. In defense for that chart, it does provide a note:

    Keep in mind he is pumping from a lake, not using it as a booster pump.
     

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