The Bushman 1150 Gallon Dark Green Rainwater Collection Tank is built for serious rainwater harvesting: 1,150 gallons of capacity in a vertical polyethylene body that stands 90 inches tall on a 63 x 63 inch footprint. The dark green color helps it blend into a yard or treeline while limiting light penetration to discourage algae growth. If you are sizing a Bushman rainwater tank for a home, ranch, or remote site, this section answers the three things that actually matter before you buy: whether it works for your job, how it ships, and the one mistake to avoid.
Will it work for your collection system?
This is a dedicated rainwater tank rated to a specific gravity of 1.0, which means it is engineered for water and water-density liquids. Plan your slab and overflow routing around the full-water load: filled to the brim, the tank and its contents reach roughly 9,591 pounds, so the pad has to carry the maximum rated contents weight without settling. Use the Tank Sizing Calculator and the Tank Sizing Guide to match this 1,150-gallon size to your roof catchment area and dry-season demand.
The tank comes plumbing-ready. The technical drawing on this page shows the molded fittings, including an 11" x 10" flat fitting, an 8" x 11" flat fitting, and an 8" x 20-1/4" flat fitting, plus a 3-inch outlet and overflow kit and a 1-inch bulkhead fitting in polypropylene with EPDM sealing. The flats give you clean, sealable landings for inlet screening and a first-flush diverter; the 3-inch outlet and overflow kit handles your gravity feed and storm overflow; and the 1-inch PP bulkhead serves as your tap, spigot, or pump suction port. That EPDM seal is the right elastomer for outdoor water service - it resists weathering and UV exposure without degrading the way cheaper gaskets do. For specifics on staging your inlet filtration, see our guide on first-flush diverter sizing per the Texas Manual on Rainwater Harvesting.
Set it on the right foundation
An above-ground poly tank this size lives and dies by its base. A full tank pushing nearly five tons straight down needs a level, continuously supported pad, not piers or an uneven gravel bed. Take a clear number to your concrete contractor: pour a minimum 63" x 63" (5'3" x 5'3") level slab so the full footprint is continuously supported. Our walkthrough on concrete pad sizing for above-ground polyethylene tanks covers the ACI 360R-10 framework so your foundation matches the footprint and load. If you are building a larger storage train for grey-water, condensate, or fire reserve, the pieces on water-reuse tank topology and fire-water reservoir design show how a tank like this fits into a multi-purpose system.
The mistake to avoid
Do not underestimate the foundation or the overflow. The biggest miss on a 1,150-gallon rainwater tank is treating the pad and the overflow as afterthoughts. Pour and cure that full-footprint slab before delivery, and plumb the overflow to daylight away from the slab so storm surges never undercut your base. Setting a tank of this weight on bare or sloping ground is what cracks pads and stresses fittings over time.
This tank ships LTL freight from Fairfield, TX, with the rate quoted live to your ZIP code - and if you are in Texas or the South-Central states, the short lane from Fairfield usually means lower freight. Get your number with our Freight Cost Estimator or call 866-418-1777 and we will quote it for you. Whether you searched for a Bushman rainwater tank, a rainwater collection tank, or a rain harvesting setup, this 1,150-gallon model is a workhorse for storing what falls on your roof.
