Learn how to harvest the rain — right from your roof

As a founding employee of Gardener's Supply, I wore many different hats over the years. Currently, I have my own company called Johnnie Brook Creative. The gardens around my home in Richmond, VT, include a large vegetable garden, seasonal greenhouse, cutting garden, perennial gardens, rock garden, shade garden, berry plantings, lots of container plants and a meadow garden. There's no place I'd rather be than in the garden.

Rainfall Harvest Calculator

To estimate how many gallons of water you can collect, enter the dimensions of your roof, including only the section that drains into your barrel. Then, add the amount of rainfall in inches.

Length: ft.       Width: ft.       Rainfall: in. Calculate