What to Know Before Installing Underground Rainwater Storage in Calgary
Getting rid of unsightly rain barrels is a common goal for homeowners looking to improve their outdoor spaces. Many property owners want the benefit of captured rainwater without sacrificing their landscape aesthetics to giant plastic tanks. At Rocky Mountain Waterscapes we regularly help homeowners replace these clunky setups with something much more practical. We specialize in designing systems that vanish completely into the yard.
Proper planning is the key to successfully installing underground rainwater storage systems in Calgary and the surrounding areas. Excavating your yard and placing heavy duty storage modules below the frost line takes exact coordination and structural knowledge. Before you bring machinery onto your property you need to understand what the process actually involves. Knowing what to ask and what to avoid will protect your investment and your property.
What to Consider Before Digging:
- Understanding Space and Load Capacity
- Can you build over an underground rainwater tank?
- Red Flags When Evaluating Local Installers
- Questions You Must Ask Before Booking
- Securing Your Yard Upgrades
Understanding Space and Load Capacity
A major concern homeowners have is losing usable yard space to an underground excavation. The reality is that modern matrix blocks are designed to support massive amounts of weight once buried correctly. Our crews dig a custom sized pit in your yard and line it with heavy duty rubber before stacking the structural crates. This creates a massive void for water that is structurally stronger than the soil we removed.
• Soil Displacement: The dirt pulled from the hole must go somewhere else on your property or be hauled away completely.
• Catchment Sizing: The size of the hole depends on how much roof runoff you intend to capture during a heavy spring storm.
• Filtration Placement: You will need a small access point near your downspouts to clean out the leaf debris filters before the water enters the main chamber.
Can you build over an underground rainwater tank?
Yes you absolutely can build and walk over a properly installed system. Once the modular blocks are wrapped in the liner we cover the entire structure with native topsoil and replant the grass. The load bearing capacity is over 5000 pounds per square foot when assembled correctly. You can drive a riding lawnmower over it, place heavy patio furniture on it, or let the kids play football right on top of it. It becomes a fully functional part of your lawn where the only visible sign is a small pump access lid hidden in the grass.
Red Flags When Evaluating Local Installers
The water feature industry has its share of contractors who cut corners on foundational prep work. Installing a buried reservoir requires specific trade knowledge regarding local clay soils and groundwater pressure. You want an installer who understands how Alberta weather impacts buried plumbing. Watch out for these warning signs when getting quotes.
• Skimping on Liners: Contractors who use cheap plastic sheeting instead of thick EPDM rubber are setting you up for puncture leaks.
• Ignoring Soil Compaction: If the crew does not tamp the earth around the perimeter of the buried matrix the ground will sink heavily after the first rain.
• Lack of Overflow Planning: Every system needs a planned exit route for water when the tank hits maximum capacity to prevent localized yard flooding.
• Pushing Generic Maintenance: If they do not offer specific water feature maintenance plans for the pump and filters they might not understand the long term mechanics.
Questions You Must Ask Before Booking
Hiring a contractor means trusting them with heavy equipment in your backyard. You need to ask direct questions about their process to ensure they treat your property with respect. Getting clear answers up front prevents surprise costs midway through the dig.
• Excavation Access: Ask how they plan to get the machinery into your yard and what protective measures they take to avoid destroying your driveway.
• Frost Protection: Ask exactly how deep the plumbing lines will be buried to protect the pipes from freezing and cracking during cold snaps.
• Warranty Coverage: Ask for clear documentation on what parts of the installation are covered if the pump fails or a pipe connection leaks.
Securing Your Yard Upgrades
A buried water catchment setup is a permanent upgrade that requires professional execution to function safely. Rushing the planning phase or hiring the cheapest bidder usually results in sunken lawns and ruined equipment. Reach out to our local team to discuss your property layout and get an honest assessment of what an installation will require.
