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dnoyeB dnoyeB is offline
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Default Capturing groudn water for sprinkler

On Fri, 06 Jun 2008 20:20:14 -0700, Bob F wrote:

"dnoyeB" wrote in message
. ..

I recalculated based on volume of water displaced. Still an estimate.
My new value is 14,230 gallons per day. So you were correct in this.
This number is more accurate.


That's still a lot of water, if it is during the dry months. I would
suggest a sprinkler pump with the pickup in the sump. Limit the number
of heads on each zone to keep the water needs less than the sump flow.
Use a pressure tank and switch to control the pump so that it shuts off
when the pressure gets high, unless the flow needed is near what the
pump can provide. The sump pumps probably do not provide enough pressure
to run sprinklers properly.


It certainly is a lot of water. Thats why I thought of this in the first
place. The water is just running into the stream making it bigger and at
the same time I am paying $300 water bill if I water the lawn fully.

The sump water by my calculations is not enough to run a full single zone
of my sprinkler system. I did not do that proper calculations for how
much it takes to put an inch of water down. I just run each zone for
20mins. 6 hunter heads with 3GPM is 360 gallons. anyway, its 18GPM which
is more than I can get out of my sump pit. Sump is only doing about
10GPM. For a 20min run im going to need 160 more gallons than the sump
can provide. So I'll need a 160 gallon tank filled before each 20minute
run.

This has the added bonus of keeping more water out of the stream next to
my house. Its much more of a swamp than a stream and it breeds
mosquitoes...

My front lawn is about 6' higher than the stream and my back lawn slopes
down to stream level.


So I am targeting a perhaps 1/2HP Jet pump that does 30-50PSI. No pressure
tank, just a 200 gallon tank before the pump. Sump will dump into water
tank, jet pump will take it from the tank. I need to be able to blow it
out since it freezes in Michigan.

Current issue is finding a 200 gallon tank of some sort. Im looking at
putting down a footer and getting a tall skinny tank next to my house.
You cant see it from the street and no windows on that side and trees all
around. I could do a cistern. Just looking to keep it simple. It should
pay for itself in 1 summer.