Water Butt: Tank Forecast
Water Butt: Tank Forecast
Rain Barrel Fill & Overflow
Download on the App StoreEnter your roof catchment area, collection efficiency and butt capacity, and RainCatch turns the forecast into the water you can realistically expect to collect.
Watch the level climb across the coming days, see which day the butt tops out, and how much simply runs to waste as overflow.
If a downpour is going to fill you past capacity, you'll know beforehand — time enough to draw water off and keep every litre you can.
Log each watering so your level stays honest. The forecast then reflects what you actually use, not just what falls from the sky.
Set up several water butts and catchment surfaces — house, garage, greenhouse, shed — and see which one really earns its keep after the same shower.
Put the next expected collection on your Home Screen. Rather not share your location? Enter the rainfall yourself and everything still works.
Use the footprint of the roof section draining into your downpipe — length times width as seen from above, not the sloping surface. A pitched roof catches the same rain as its flat footprint, so measuring from above is both easier and more accurate.
