Rainwater Harvesting with Rain Barrels

title: "Rainwater Harvesting: Rain Barrels for the Home Garden"

A standard 2,000 sq ft roof delivers about 1,200 gallons of water in a 1-inch rain event. Most of that runs off, either into gutters and downspouts or off the roof edges, where it either carries pollutants into storm drains or contributes to runoff problems. Capturing some of it for garden use is a practical way to reduce water costs and make use of a resource that would otherwise be wasted.

The limitations are real: a 55-gallon rain barrel fills in a modest rain event and empties in minutes of hose watering. One barrel doesn't meet significant irrigation needs. Two to four connected barrels in a strategic location makes a meaningful contribution.

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Table of Contents

1. What Rain Barrels Can Realistically Supply
2. Legal Considerations by State
3. Sizing Your System
4. Installation Basics
5. Overflow Management
6. Maintenance and Winter Care
7. Frequently Asked Questions

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