The Original Eco Friendly & Sustainable Living Portal (since 2009)
> Rainwater harvesting Calculator
This rainwater harvesting calculator (operational since 2009 and commonly called a tankulator) works out what your expected rainfall collection capacity should be over a given year, along with your minimal tank size to have constant water given an average monthly demand.
Remember, the values calculated here should be taken as a working guide, it does not take into account other effects (such as drought conditions) and how complete the source data coverage is.
Reset & do another calculation.
Related Articles and Links..
- The facts about Water Tanks
- Keeping cool in Summer and warm in Winter for free!
- What is Passive Solar?
- What is convection and how it effects your heating costs
- What is a Trombe Wall and how can you use one?
Related News
- England Rainfall Trends 2025 Thu, 8 Jan 26, 9:00pmFor all the talk of droughts, last year in England rainfall finished well within normal bounds. The worst droughts were, of course, all prior to the Second World War.
- Cloud Seeding History: Looking Back at the Colorado River Basin Pilot Project Sun, 10 Aug 25, 3:00amSo, when cloud seeding purveyors come “a knockin’” to your county, state, water district, etc., claiming that they will increase your water supply, mitigate a drought: Caveat emptor!
- The ‘Fruitful’ Results of Increasing CO2 Tue, 22 Jul 25, 3:00pmAmong the climatically correct, nothing is more scandalous than describing carbon dioxide (CO2) emissions as beneficial. You can be blacklisted from public forums, professional networking sites, and even be removed from your...
- Met Office Fail To Respond To Criticisms Tue, 15 Jul 25, 3:00pmThey have all the data back into the 19thC, so why don’t they show the long term trends? Is it because it would not tell the story they want to tell?
- False, Axios, Atlanta’s Rainfall Increase Isn’t Attributable to Climate Change Fri, 11 Apr 25, 11:00amClimate Central continues to push a simplistic narrative that ignores fundamental atmospheric physics, misuses regional data, and omits well-established meteorological processes like UHI and aerosol-induced rainfall...
Got a question or comment about this?
Find what you were looking for?.. Not quite what you expected?.. Got a question to ask people?Share your thoughts and use the form below to post a public comment right on this page.