Uneven water amounts from sprinklers (lawn, irrigation, growing, how to)

[douknownam]

Any advice on how I can adjust or compensate for uneven water getting to certain parts of my lawn? Just had new sod (Tifgrand Bermuda) put down and have been watering for 10 min / 3 x's a night for the last 2 weeks. Noticed that the sod in back part of my lawn is growing A LOT fast than front. Put out some weighted down cups to measure how much water each part of the lawn was getting (3 separate cups) and found that the front part was getting 1/16" while the middle was at 1/4" and the back part at 1/3" overnight.

I'm looking to start toning down on the watering as my sod seems to have rooted pretty nicely, maybe cut back to 3 x's a week at the same overnight schedule--then back to once a week later on. At the moment, I plan to just spot water the front part of the lawn to even things out, but is there anything I can do to adjust/compensate for the uneven watering? I have no idea how to adjust sprinklers as I'm very new to home ownership. I think I also need to mention that the back part of the lawn is on a slope, so I'm not sure how that affects the amount of water it gets. Any advice would be GREATLY appreciated!

[Bulldogdad]

1) Are the sprinklers on zones? If so can you increase the time on the zones geting the least amount of water.

2)Is the back part on the bottom of the slope, water migrating from the top?

3)Spray, rotor or impact sprinklers? Brand? Model? Get on your knees and check it out. Pictues always help

4)I am assuming your house/irrigation system is older and not under any kind of service warranty.

5)With out knowing the particulars of your irrigation system it is difficult to provide you with much more than increase water times to the affected areas.

[douknownam]

1 - My front lawn is all on 1 zone.

2 - The back part has a side slope, so I don't think it's really run-off.. plus, I put the cup right in the middle of the slope.

3 - They look like rotor (not impact) sprinkler heads.. The brand is "Irritrol XL Series". Is there any way I can adjust how much water comes out of a head, or can I only adjust the pitch and rotation?

4 - You are correct, it's an older home and I wasn't told of any warranty nor do I expect they would be covered.

I'm starting to think it may be the poor system design that's the reason for the uneven coverage, but I'm all ears if anyone has any recommendations or advice. TIA!

[Bulldogdad]

The irritrol XL has nozzles that insert in the front to increase the amount of GPM (gallons per minute) and are fully adjustable. You can buy new nozzles if you feel the need.

An adjustment key that fits the adjusting screws for the arc, flow and coverage settings will make yourt life easier. However you can use a small screw driver if you find one that fits.

Plenty of info on the web on adjusting that rotor. Good product BTW.

You will need to play with it until you get the coverage you want.