In article . com, "Andy" wrote:
I have a house which is about 300 feet from a lake and would like
to take irrigation water from the lake.

It is about a 10 foot rise from the lake to the house level.

I would appreciate any comments on the following possible
approaches.

1) Put the pump near the lake and run 300' of 3/4 pipe to
the house. This requires 300' of buried UF to the pump, which
cannot be buried in the same trench.

2) Put the pump near the house and run 300' of 3/4 pipe to the
lake with a foot/check valve at the lake end. Have a spigot
tap at each end of the 300' intake pipe for initial priming.
(Using a garden hose and city water for priming)

3) Putting the pump halfway in between and running UF to the
pump and 3/4 intake and output lines as needed, with
foot/check valve.

#3 seems to have the disadvantages of #1 without the advantages of #2.

My preference is for number 2 since it only requires one pipe trench
and no buried UF electric. I think that with only a 10' head and
a check valve, it should maintain a prime....

#2 looks better IMO... but I really think you'll want a larger pipe. 3/4" is
awfully small for a hundred yard run. I'd use 1" at least. This is, for the
most part, a labor-intensive job with modest materials costs (except for the
pump itself). The difference in cost between 3/4" and 1 1/4" isn't all that
great, and there's no extra difficulty in laying the larger pipe.

--
Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?