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Rainbarrel Tutorial: How to make a rain barrel

Step 1: Drill three of four holes in the barrel.  One of these is for the bibet to connect your garden house to the barrel and the other fittings will allow you to add more barrels in the future.  One of the barrels must have an overflow fitting near the top of the barrel.  If you plan on using 3/4 inch fittings use a 1 inch hole saw to cut the holes.  If you have an adjustable hole saw make it a little smaller than 1 inch.

Step 2:  Place plumbers goop on a 3/4 inch nipple. Using a 3/4 inch galvanized metal nipple and some locking pliers, thread nipple into the barrel. the hole for the fitting.  Place Plumbers goop or some other adhesive on the thread.

Step 3: Now the real fun part.  Cut the down spout at the proper height.  You should place the rainbarrel on one or two concrete blocks and then determine the proper height.  After cutting the down spout attach the necessary elbows and extensions to have the down spout reach the barrel.  I still am trying to create a non ABS or PVC way to divert the first couple of gallons after each rainfall (this will keep the sediment from clogging up the screen).  Attach a 4 inch by 2 inch ABS plastic converter to the end of the down spout and attach a fine mesh screen over the converter (you can use a paint sprayer filter which you can get at a hardware store). 

Step 4: If you are adding more barrels do this now.  Attach a garden hose Y fitting on the 3/4 inch nipples.  Position the barrels on top of the concrete blocks and cut the right length of garden hose to connect the barrels (with male fittings attached to both ends). 

Step 5: The final product.  You must attach an overflow line on the first barrel (the one on the far right in this picture).  This must be placed near the top of the barrel and it should be attached to some form of hose or tube to discharge any overflow.   Please note that you must remove one of the two bung fittings on the top of the barrel and cover it with a small screen.  I used the paint sprayer filter with a rubber-band to hold it in place.

Further reading & source: http://www.rwh.in/howto.html

Complete rain barrel construction kit: https://gardenwatersaver.com/product/rain-barrel-kit-3×4/

Last updated on 23-May-2022.

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So Just How Much Rain Can I Collect?

The amount of rainfall that you can collect is governed by the following formula:

Easy to Remember Formula: 1″ of rain x 1 sq. ft. = 0.623 gallons

To calculate the amount of rainwater you can collect, you need to know your annual average precipitation for your area. You can use the precipitation map below to find an approximate amount for your area.

Copyright: https://www.watercache.com/education/rainwater-harvesting-101 © 2021 Innovative Water Solutions LLC. All Rights Reserved.

Sitemap & Additional Resources: http://www.rwh.in/sitemap.htm .

Rainfall Data of US/UK/Australia
US : https://www.usclimatedata.com/
UK : https://www.metoffice.gov.uk/research/climate/maps-and-data
Australia : http://www.bom.gov.au/climate/cdo/about/cdo-rainfall-feature.shtml

Blog: https://rainwater.blog/ Last updated on 26-Jan-2022.

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Rainwater Harvesting System Components

Rainwater harvesting is the capture, diversion, and storage of rainwater for a number of different purposes including landscape irrigation, drinking and domestic use, aquifer recharge, and stormwater abatement.

In a residential or small-scale application, rainwater harvesting can be as simple as channeling rain running off an unguttered roof to a planted landscape area via contoured landscape. To prevent erosion on sloped surfaces, a bermed concave holding area down slope can store water for direct use by turf grass or plants. More complex systems include gutters, pipes, storage tanks or cisterns, filtering, pump(s), and water treatment for potable use.

This blog focuses on residential or small-scale commercial systems, for both irrigation and potable use. Further reading: http://www.rwh.in/RainwaterHarvestingManual_3rdedition.pdf Chapter-2: Rainwater Harvesting System Components.

The local health department and city building code officer should be consulted concerning safe, sanitary
operations and construction of these systems.

Figure 2-1. Typical rainwater harvesting installation: Blueprint: http://www.rwh.in/rainwatr/rain414.gif

Basic Components: Regardless of the complexity of the system, the domestic rainwater harvesting system (Figure 2-1) comprises six basic components:

#1 Catchment surface: the collection surface from which rainfall runs off
#2 Gutters and downspouts: channel water from the roof to the tank
#3 Leaf screens, first-flush diverters, and roof washers: components which remove debris and dust from the captured rainwater before it goes to the tank
#4 One or more storage tanks, also called cisterns
#5 Delivery system: gravity-fed or pumped to the end use
#6 Treatment/purification: for potable systems, filters and other methods to make the water safe to drink.

Source: The Texas Manual on Rainwater Harvesting >> http://www.rwh.in/RainwaterHarvestingManual_3rdedition.pdf Chapter-2: Rainwater Harvesting System Components.
Blog: Rainwater Blog >> https://rainwater.blog/ https://raincentre.blog/

Homepage: http://www.rwh.in/

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Garden Water Saver

Welcome to Garden Water Saver

Garden Watersaver allows environmentally-conscious people to easily collect rain water from the roof of a house, so that the water can be used whenever it’s needed to irrigate a lawn or a garden, to clean yard tools, or for any other non-drinking use.

The secret of Garden Watersaver is their unique Downspout Diverter, which attaches easily to any gutter’s downspout. Once in place, the Diverter sends water to a rain barrel through a hose until that barrel is completely full. Once full, additional water simply continues down the downspout as it normally would — so the process is automatic!

Garden Watersaver also offers a Complete Rain Barrel Construction Kit that includes the Downspout Diverter plus all of the other items and instructions necessary to build a complete rain barrel system for water collection. It’s all there!

The amount of rainfall that you can collect is governed by the following formula: Easy to Remember Formula: 1″ of rain x 1 sq. ft. = 0.623 gallons To calculate the amount of rainwater you can collect, you need to know your annual average precipitation for your area. You can use the precipitation map below to find an approximate amount for your area.

Last edited on 10thMay 2022.