Welcome. This is your source of information about how a simple rain garden can help stem the flow of storm water polluting our region's rivers and streams. Explore the site. Learn about the Three Rivers Rain Garden Alliance. And do your part to improve our environment...one drop at a time.

Meet our partners

The Three Rivers Garden Alliance is a partnership of non-profit organizations, corporations, educational institutions, and government agencies.

Rain Garden Contest 2013

Highlighting the best examples of homeowner or professionally installed gardens in Allegheny County.

2103 Winners announced!

We congratulate the Borough of Millvale and the Folajtar Family.
View the winners of the 2103 Rain Garden Contest (PDF).

river

What harm can a little water do?

A rainy day brings our region an average of a quarter-inch. But it only takes a tenth of an inch for storm drains and sewage lines to overflow. Learn more about the problem at www.3riverswetweather.com.

map

A growing movement.

Rain Garden Alliance member gardens are sprouting up everywhere in the local region. Check our map to find a few near you, and get a sense of the positive impact these gardens are having.