I built a new house at our property last year and put down sod. It looked great until this year when it got so hot. My pond sits 150 feet down the hill (about 20 foot of elevation difference). I want to pump water out of my spring fed pond (water flows in and out of the pond 24/7). I've tried two different pumps - electric pumps - that my brothers had - but they weren't strong enough to pump up the hill to the yard. I'm looking for the best solution to pump water into a garden house into some sprinklers in my yard. Any help would be greatly appreciated.

I’d buy a 3” trash pump and gradually reduce it down to 3/4 for your sprinklers. I’ve done it many times. One from harbor freight will work just fine for your application.

We are getting a water well in the next few weeks. I just ordered a 3,000 gal dark green storage tank. My plan is to have the well pump into the storage tank then use 1.5” lines to run sprinklers on our 2.5 acres.

You could run a small line to a storage tank then pump out of the tank for irrigation.

Jes a thought….

We irrigate a lot with single stage centrifugal pumps out here, and it wouldn't take a very big one to do what you want. Most discharge pressure is in the 30-40# range. Get the clean open suction as low as you can, relative to the pump. Put a check vale in the suction line, in order to hold prime. Use at least 3/4" discharge.

More than you want to know, but will let you know the in's and outs of pumping, and the losses.

http://www.etivc.org/techpage_files/pump%20tutorial.pdf

If I were doing this I'd use a 4" deep-well submersible pump (those silver ones that are like 3feet long x 4" dia) - it will deliver plenty of pressure and volume for running multiple sprinkler heads.
I would also use a 2-wire 240 volt version of this pump - 1/2 horsepower would be plenty. (240v version uses HALF the amps of a 110v version, so for that long run you don't need as heavy gauge wire - saving $$)
Now running a 'single 3/4" water hose' 150ft and up 20ft will generate TOO MUCH FRICTION to run multiple sprinklers with decent pressure; either run 1" minimum, better yet 1.25" pvc for the 150' (schedule 20ok) , then connect a separate hose for each sprinkler off the PVC - should be able to easily run 4 sprinkler heads on 1/2 HP - increase HP for more heads.

Till you can get a permanent solution, you could see how far up the hill the largest of the pumps can push water up the hill. A few feet below that point, tie the pump at the pond into the suction of the second pump and see if you have enough to get it to the yard.
It isn't the best solution, but may get you going till you can get a better pump setup. You only have to invest a small amount of time and money for a few fittings and possibly an extension cord to see if this works.
We have done this in several places to get water uphill on a temporary basis. The worst that can happen is it doesn't work.