Prairie Rain Harvester


Tips on using and maintaining your
Prairie Rain Harvester Recycled Rain Barrel
& Frequently Asked Questions (FAQ)

Uses For Rain Barrel Water:

- Water your flowers, trees, shrubs, and lawn.
- Wash your car or pet; rinse your feet, tools or muddy boots.
- DO NOT DRINK WATER from your Rain Barrel.

Maintaining Your Rain Barrel:

- Keep your Rain Barrel spigot closed when you are not using the water so that the Rain Barrel can collect water.
- Regularly check your gutters, downspouts, Rain Barrel mosquito screen and Rain Barrel spigot for leaks, obstructions or debris.
- Drain your Rain Barrel before temperatures drop below freezing.
- In the winter, keep your Rain Barrel spigot open so that the water does not accumulate in the Rain Barrel and freeze. You can also turn it upside-down or bring it inside to ensure no water accumulates in the barrel.



Frequently Asked Questions About Rain Barrels

If you don't find the answer to your question here, please contact us!

1. How much rain does it take to fill a 55 gallon Rain Barrel?

2. How can I increase the pressure of the the water coming out of the hose I hooked up to my Rain Barrel?

3. What are the two white caps on the top of my Rain Barrel?

4. How can I link two Rain Barrels together?

5. How many inches does it rain in Illinois in an average year?

6. How much does a Rain Barrel weigh when full of rain water?

7. What do I do with my Rain Barrel when it gets cold outside / in the winter?

8. What if I get mosquitoes in my Rain Barrel?

9. Can I use a Rain Barrel to control storm water runoff / divert water away from my foundation, etc.?

10. What kind of paint should I use to paint my Rain Barrel?

11. What are some other ideas for helping to make my Rain Barrel blend in with my landscaping?

12. Where can I get an electric pump or hand crank pump for my Rain Barrel?

13. I don't have a downspout where I would like to put my Rain Barrel. Is is possible to add a downspout to my gutters?

14. What are some ways to point my overflow hose away from my foundation?


1. How much rain does it take to fill a 55 gallon Rain Barrel?

That depends on the roof area that is being fed into the downspout you installed your Rain Barrel under:

1" of rain on a 1,000 sq foot roof = 625 gallons of rain water = .625 gallons per sq foot
.75" of rain on a 1,000 sq foot roof = 469 gallons of rain water = .469 gallons per sq foot
.5" of rain on a 1,000 sq foot roof = 313 gallons of rain water = .313 gallons per sq foot
.25" of rain on a 1,000 sq foot roof = 156 gallons of rain water = .156 gallons per sq foot

Hypothetical Example: A 1,000 square foot roof equally divided between 4 downspouts would create four roof areas of 250 square feet. 1" of rain on a 250 square foot roof area would result in 156 gallons of rain water. .25" of rain on the same 250 square foot roof section would result in 39 gallons of rain water.

As you can see, even a small rain shower on a small amount of roof area can easily fill a 55 gallon Rain Barrel. Keep this in mind when choosing the location for your Rain Barrel. You don't need to hook it up to the downspout that is connected to the largest span of roof, in fact doing so could cause overflow problems during heavy downpours. It is best to install your Rain Barrel in a location that is closest to the plants you are wanting to water with your stored Rain Barrel water.

2. How can I increase the pressure of the the water coming out of the hose I hooked up to my Rain Barrel?

Rain Barrels are not pressurized like the water flowing through the pipes in your home / coming out of the spigot on the side of your home. Rain Barrels rely on the forces of gravity for the small amount of pressure that they have naturally. By elevating your Rain Barrel on a couple of levels of concrete blocks, you will create a pressure effect similar to the concept of a city water tower. You will experience the most water pressure when the barrel is at its fullest. The water pressure will decrease as you drain the barrel.

Keep in mind that water doesn't flow uphill. If the plants that you want to water are in a part of your yard that is higher than your Rain Barrel, try elevating your Rain Barrel higher with more layers of concrete blocks. You can also use a simple electric pump to overcome the elevation difference, or simply use your watering can to take the water to your higher plants.

Make sure your hose is free of kinks and unnecessary loops and bends. Also use the shortest length of hose possible to cut down on resistance. Be sure you are using a high quality hose that is 3/4 inch in diameter the whole length. Cheaper garden hoses may have standard 3/4 inch connectors but the hose itself is actually only 1/2 inch in diameter resulting in more resistance to your low pressure Rain Barrel water. Check out this website for more information on garden hose!

3. What are the two white caps on the top of my Rain Barrel?

The Prairie Rain Harvester Recycled Rain Barrel features two threaded "bung" openings. These openings are both two inches in diameter. One is threaded with standard pipe threads (NPS) and the other is "Buttress" threading. You can remove the white caps called "bungs" for easy access to clean out your Rain Barrel with a garden hose at the end of the season. You can also purchase a hand cranking barrel pump that would connect to the barrel through the bung opening. Also, since one of the openings is 2" standard pipe thread, you can plumb all sorts of things into your Rain Barrel using 2" pipe fittings available at your local hardware store.


A close up photo of the NPS threaded "Bung Opening"

4. How can I link two Rain Barrels together?

First, ask yourself, "Do I really want two Rain Barrels side by side? Would it be more convenient to have two Rain Barrels under two different downspouts so they both fill at the same time and are closer to the separate planting areas I want to water?" The majority of my customers who buy two or more Rain Barrels install them under separate downspouts for the convenience of having their stored rain water in various spots around thier homes.

To connect two of my Rain Barrels together, elevate one Rain Barrel higher than the other and then secure the overflow hose of the higher Rain Barrel by the mesh screen of the lower Rain Barrel - so that when the higher Rain Barrel fills and overflows, the overflow rain water will flow into the lower Rain Barrel.

5. How many inches does it rain in Illinois in an average year?

According to WGN-TV Meteorologist Tom Skilling, Illinois receives an average of 37 inches of rain fall annually. "Average precipitation (rain plus the water equivalent of melted snow) across the lower 48 states is about 30 inches per year. If none of it evaporated, soaked in or drained off, a 30-inch layer of water would flood the country after one year! Louisiana, with 55 inches, is the wettest state; Nevada, with a scant 9 inches annually, is the driest. Illinois, with 37 inches, ranks 27th."

Click on either of the maps below for a larger image!


6. How much does a Rain Barrel weigh when full of rain water?

One gallon of water weighs 8.34 pounds so if your 55 gallon Rain Barrel were completely full it would weigh over 460 pounds. Be sure to build a wide and study foundation when elevating your Rain Barrel. Also, be sure to elevate your Rain Barrel BEFORE allowing it to fill with rain water!


7. What do I do with my Rain Barrel when it gets cold outside / in the winter?

Don't let your Rain Barrel fill with rain water during periods of freezing temperatures! If a full Rain Barrel freezes, the bottom of the Rain Barrel can bow, making it unstable, or even worse, it can split or crack, causing a leak. For winter maintenance, you have two easy options:

- Leave the Rain Barrel in place on its platform and connect an all-weather garden hose to the spigot. Direct the hose to an area of your yard that can handle the draining rain water and leave the spigot open so that as water enters the Rain Barrel, it empties out through the hose.

- Disconnect your Rain Barrel and store it in a garage or garden shed for the winter. Once you have stowed your empty Rain Barrel away, simply take the included white "Flex Elbow" that you had directed over the opening of your Rain Barrel and use it to connect the piece of downspout on your house to the piece you cut off when installing your Rain Barrel. This method restores your former downspout system for the winter.

8. What if I get mosquitos in my Rain Barrel?

The Prairie Rain Harvester Recycled Rain Barrel is designed to keep mosquitos out of your stored rainwater. If somehow you find yourself with mosquitos in your Rain Barrel (or in your own home made Rain Barrel / open top trash can), you can use "MosquitoDunks" to kill the mosquito larvae and live mosquitos. "MosquitoDunks" are used on farms and ranches in open air watering troughs to control mosquitos. For a Rain Barrel you will only need to use half a dunk and it will last for a month. They float on the surface of the water in the Rain Barrel. Check out the official website of "MosquitoDunks" for more info.

6 pack of Mosquito Dunks - $10 at Lowes

9. Can I use a Rain Barrel to control stormwater runoff / divert water away from my foundation, etc.?

Yes! Rain Barrels are an excellent solution for controlling stormwater water runoff. If you haven't already, check out the answer to the question "How much rain does it take to fill a 55 gallon Rain Barrel?" to give you an idea of the volume of water you are dealing with when it comes to controlling stormwater runoff. It's not possible to trap all your stormwater in a Rain Barrel, but a Rain Barrel can help manage the deluge of rain water during a heavy rain. Here are some helpful tips:

- Connect a long garden hose or soaker hose to the spigot of the Rain Barrel and leave the spigot open during rainy periods. If it's raining a lot over many days, your plants probably don't need to be watered with your Rain Barrel water, and if your top priority is managing stormwater runoff, you probably aren't too concerned about saving rain water in your Rain Barrel. By leaving the spigot open with a long hose attached, rain water will drain out of the Rain Barrel through the hose to a location you have selected away from your foundation.

- A 6 foot long overflow hose is included with each Prairie Rain Harvester Recycled Rain Barrel. We use standard 1.25" sump pump hose for the overflow hose. You can purchase a bag of 24 feet of sump pump hose if you want to direct the Rain Barrel overflow water even further away from your foundation while still maintaining a full Rain Barrel to water your plants. You can even poke small holes into the last few feet of the overflow hose to turn it into a soaker hose!

- Is your basement or crawl space sump pump discharge creating a pond in your backyard? The 2" threaded bung openings on the top of each Prairie Rain Harvester Recycled Rain Barrel can be adapted to receive a 1.25" or 1.5" sump pump hose using standard PVC pipe fittings.

10. What kind of paint should I use to paint my Rain Barrel?

Check out our page all about painting your Rain Barrel!

11. What are some other ideas for helping to make my Rain Barrel blend in with my landscaping?

- Wrap your barrel in landscape burlap, a grass throw rug, or a bamboo yoga mat.
- Secure plastic lattice around your Rain Barrel. You'll find the lattice in stock at local home improvement stores in a variety of colors!
- Use a three-sided wooden lattice screen to disguise your barrel just like a barbecue grill!
- Wrap your Rain Barrel in chicken wire and allow your favorite vining plants to trellis up the wire, covering your barrel in foliage!

Yes, there is a Rain Barrel in there!

Natural Wood Lattice Screen - $95 at Garden's Supply

12. Where can I get an electric pump or hand crank pump for my Rain Barrel?

Most hardware stores and home centers sell small electric utility pumps with 3/4" garden hose threading on both the input and output connections. Some even include a short section of garden hose that you can use to connect the pump to your Rain Barrel. You can even get a pump that runs off a DC battery or a solar panel. Don't buy an electric pump that is sold as a "Rain Barrel Pump" - these are just a high priced utility pump! Keep in mind, most electric pumps output at 3 or more gallons per minute, so you could drain your 55 gallon Rain Barrel in less than 20 minutes.

Wayne Transfer Utility Pump AC Powered - $79 at Lowes

Marine Utility Pump 12 Volt Battery Powered - $39 at Harbor Freight Tools

The barrels that weI recycle into Rain Barrels have two threaded openings in the top of the barrel called "bungs." You can remove the white cap and insert a hand operated barrel pump into this opening. You can find barrel pumps at automotive stores like Napa and Advance Autoparts and even at Harbor Freight Tools. Be sure to select a Barrel Pump designed to pump water so it won't rust.

Multi-Fluid Rotary Barrel Pump - $27 at Harbor Freight Tools

13. I don't have a downspout where I would like to put my Rain Barrel. Is it possible to add a downspout to my gutters?

Yes, adding a downspout is actually a pretty simple DIY project. All the parts you need can be found in the gutter section at your local hardware store or home center. All you will need to do is cut a hole in the bottom trough part of your gutter, pop in a downspout adapter, caulk it into place so it doesn't leak, and then add your downspout. Check out this great article "Adding A Downspout" (with photos!) at This Old House On-line!

14. What are some ways to point my overflow hose away from my foundation?

You can easily add a 1.25" metal pipe strap (available at any hardware store) to a plastic splash block using two wood screws. This will hold the overflow hose to the splash block. You can also use a U shaped piece of wire or section of metal coat hanger to stake the overflow hose to the ground.


Plastic splash block with 1.25" pipe strap to hold the overflow hose.


Prairie Rain Harvester, Inc. | www.PrairieRainHarvester.com | Copyright 2010