10 Best Flat Back Rain Barrels 2025 in the United States

The FCMP Outdoor Raincatcher is a 50-gallon flat-back rain barrel designed for efficient outdoor rainwater collection. Its flat back design and large openings facilitate easy installation against walls and enhance its usability. The barrel includes spigots for connecting multiple units, allowing users to expand their rainwater storage capacity.

The aluminum mesh screen effectively keeps out debris, ensuring that the collected water remains clean. Made from BPA-free polyethylene plastic, the barrel is durable and environmentally safe. Its large size (24" x 24" x 32") and 25-pound weight might require assistance during installation. The included garden hose, shut-off thumb valve, hanging hose clip, overflow hose, and connection kit make it a comprehensive rainwater collection solution.

Assembly is required, which could be a minor inconvenience for some users. The product comes with a one-year limited warranty on manufacturing defects, providing peace of mind. The FCMP Outdoor Raincatcher is well-suited for homeowners looking to efficiently collect and store rainwater for gardening and other outdoor uses.

The Good Ideas Rain Wizard 50 Gallon Rain Barrel is a solid choice if you want to collect and store rainwater efficiently. Its 50-gallon capacity is a good size for most home gardens, providing enough water without being too bulky. Made from BPA-free plastic resin, it’s built to resist weather damage and UV rays, so it should last through different seasons without cracking or fading.

The flat-back design helps it sit flush against your home, saving space and making installation straightforward—no assembly is needed. It comes with a metal spigot that's sturdy and easy to attach a hose to, plus a plastic mesh screen to keep leaves and debris out of the water. Another handy feature is that you can link multiple barrels together if you want to increase your water storage, although the linking kit is sold separately.

On the downside, the barrel weighs about 22 pounds empty, which might be a bit heavy to move around during setup. Also, the warranty is limited to one year, which is fairly short compared to some other options. While it’s not the cheapest barrel on the market, its combination of durability and practical design makes it a suitable option for homeowners looking to save water for gardening or outdoor chores without too much hassle.

The FCMP Outdoor Catalina 45-Gallon Rain Barrel is a solid choice for anyone looking to collect and reuse rainwater efficiently. Its 45-gallon capacity is ample for typical garden watering needs without being too bulky. The flat-back design is a smart feature, allowing the barrel to sit neatly against your house, saving space and making it easier to connect to your downspout.

Made from BPA-free, UV-resistant recycled polyethylene, this barrel is built to handle outdoor weather and last for years. It comes with a 3.5-foot garden hose and a shut-off thumb valve, which makes accessing water straightforward and flexible—whether you’re filling a watering can or hooking up a longer hose for distant garden areas. Installation should be relatively simple, especially with its fixed lid that helps keep out debris, pets, and kids, reducing maintenance effort.

The product’s relatively narrow dimensions mean it might not hold as much water as larger barrels if your garden needs are extensive. Also, while the plastic construction is durable, it may not be as sturdy or attractive as some heavier materials like metal or wood. This rain barrel is well suited for gardeners who want an easy-to-install, reliable, and space-saving water collection system with minimal upkeep.