- This is the under-decking, this under-decking catches quite a bit of water. It's not pretty but it is functional. Subtracting the roof sq. footage over the bar, this area is approximately 256 sq' and according to on line calculators, each rainfall of 1" will give me 160 gallons of water.
Rain calculator
"here" .
I had an "open-lid" Rain barrel in the back yard that just sat under the edge of the under-decking to catch some water, I would also put out 5 gallon buckets and was impressed by the amount of water that was captured.
I had a pool pump in the "open-lid" barrel with a hose for watering the plants, the top was covered with screen. This pump was on a switch, so I would just turn on the pump and water the plants.
What I have been doing earlier this year was deep watering the plants a few days before a rain forecast and topping off the backyard pond.
I do this so the rain barrels will not over flow excessively. The barrel in the back was for storing extra rain water. I wont be using either of these barrels in the new system.
- I installed some gutters to divert the water for harvesting, the gutters were going to be installed regardless of me harvesting rain water or not. I needed to divert the water to the lawn because it was pouring out on the side patio and running back onto the patio under the deck, but even diverting to the lawn was not the answer.
I removed the open top barrel and replaced with a closed top and ran a shop vac hose from the gutter to the barrel, there is no over flow other than when it fills up, the water comes out of the loosened cap. There is a transfer pump mounted to the deck and the pump is always primed as it is below the outlet of the rain barrel, the output of the rain barrel is connected to the input of the transfer pump with a short washing machine hose (female threads both ends), the output of the transfer pump has a zero gravity hose fitted with a Super Nozzle.
- I installed the pump and a zero gravity hose with a needle nozzle sprayer, so far its working well.
- Here is a short video of the pump and nozzle in action. The shaky video starts out showing the Koi Pond Barrel and overflow then goes to the back yard and the (noisy) pump is turned on. I can reach any place in the yard including the side of the house.
The project has taken a bit of a nose dive, the 90g Barrel I had ordered was cancelled after a two month wait. I really wanted an aesthetically pleasing rainwater collection system but may have to resort to standard 55 gallon drums. I really hate the idea of having three or even 4 rain barrels taking up the yard and creating an eyesore. There however is the idea of painting the barrels to compliment the yard, who knows.
This week I have been tweaking my Rain Water Collection a bit trying to come up with another game plan. I turned off my irrigation on the 14th with a full 55 gallon barrel full of rainwater to get an idea what my usage would be. By the end of the summer, I should have a good indication of the capacity needed to divert the water. I am hoping my usage matches up with the harvested rainwater.
As I write this I am getting more and more angry at Hayneedle for screwing me with my order, out of frustration I ordered this 165 gallon monster, there... I did it! Now all of my problems are solved... lol.
- 165 gallon tank - 31" Diameter x 56" Height Polyethylene with UV inhibitors, 2" PP Female NPT Bulkhead Fitting.
- 55 gallon drum - 23.5" Diameter x 34.5" Height
- 90 Gallon Good impressions rain barrel - 43.5'' H x 28.5'' W x 28.5'' D
This is definitely going to have to be painted if it's going to reside in the yard.
The goal for this project is to have it up and running for the 2019 garden season, the rest of the 2018 season will be for purchases, setup, tweaking and gauging usage.
My absolute hardest thing to overcome with this rain collection system other than cost, is aesthetics, I really have no room for 55 gallon drums all over the place. The "Koi Pond Barrel" is tucked away and is not a problem, but the other is a bit of an eyesore. Since I want to increase the capacity to hopefully 250 gallons, my logic is, buy larger barrels.
I am hoping they appear less intrusive than the four 55 gallon barrels I planned on using. I am also hoping that the capacity is enough to catch most of the rainwater during a heavy rain so the yard doesn't flood out.
One thing I have been struggling with is placement, I really don't have the luxury of setting this up as a gravity feed system, I just have to suck it up and keep the placement where it is now.
To improve on the system, I had to shell out some money, lots of money, but saving money wasn't the reason I decided to do this in the first place.
1) As mentioned earlier, my main focus is to keep the water from draining onto the patio and yard from becoming a swamp with a side benefit of utilizing a free resource that would supplement my Pond and Plants reducing the need for city water, plus I really like the idea of having a more "Eco Friendly" garden, hell, who am I kidding, I just like to tinker!
The initial cost was tough to swallow but I already had some of the supplies listed below and the gutters were going to be installed regardless of harvesting the rain water or not. The larger barrel is going to be a challenge to blend in with the yard.
$130.00 - 90 gallon rain barrel from
Hayneedle "ouch!"
$339.00 - for the 165g DOUBLE OUCH!
$55.00 - Transfer pump from
Harbor Freight
$25.00 - Outdoor switch, box, conduit and fittings from
Home Depot
$8.00 - Super Nozzle
Home Depot
$9.48 - Washing Machine Hose
Home Depot
$25.00 - 25' Zero Gravity Hose
Lowes
$90.00 - Gutter, end caps, hangers and 2x4's
Home Depot
$24.00 - Pump hose for gutter and overflow
Home Depot
$20.00 - Hose from shop vac.
Home Depot
$30.00 - Misc stuff, fittings, tape, hose clamps, silicone etc..