Describe the project
Add the location, roof collection area, and the water uses you want the system to serve.
Professional planning made accessible
Design smarter rainwater systems.
Turn your roof, local rainfall, and water needs into a clear storage recommendation—then see how the system performs through wet seasons, dry seasons, overflow, and backup water use.
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Location-based weatherDaily storage modelingIndependent recommendations
How it works
From project basics to a useful storage range
Rainwater Studio keeps the inputs simple, then uses daily weather and water demand to explain what different storage sizes can actually accomplish.
Model the water balance
Historical daily weather and project demand show how storage fills, empties, overflows, and needs backup.
Understand the recommendation
Compare useful storage sizes, see diminishing returns, and explore how the recommended system behaves.
More than a calculator
Clear answers without hiding the tradeoffs
Annual rainfall alone cannot explain whether a tank will be useful. Rainwater Studio models timing so homeowners can see when water is available, when demand occurs, and when larger storage stops adding much benefit.
Why this storage size
A storage performance curve highlights the useful range and shows where additional capacity begins to provide smaller gains.
How the tank behaves
Explore representative, wet, and dry years, then move through different storage sizes to see the tank fill and empty.
Where the water goes
See rainwater collected, rainwater used, overflow, and municipal backup in one understandable water balance.
Start planning
See what rainwater can do for your property.
Build a planning-level recommendation in a few guided steps. Final design should still consider site conditions, plumbing, access, structure, and local requirements.