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Local Voices
Tri-CAP Environmental Justice Coordinator

VIDEO: Beebe School Rain Garden Update

I went by the rain garden at the Beebe School during this afternoon's heavy rains to check-out its performance (see video).  So far the rain garden looks to be working pretty well, with a few issues to monitor and potentially work out:

  • Some of the water flow from the parking lot is still going directly into the catch basin, without entering the rain garden basin and being treated.  However, that interception of water does seem to be preventing flooding.

  • Water is pooling in the rain garden basin as it should, in order for infiltration to occur.  It may be pooling too much though, limiting treatment by the plants and soils in the rain garden.

We will continue to monitor the rain garden as a pilot "green infrastructure" project for Malden, and hope to make improvements as necessary.

David Hymel

10:29 am on Monday, November 14, 2011

Ponding looks good. The key is how long before it totally infiltrates - usually no more than a few days. Try a low asphalt collar (speed bump) in the shape of a U with the open end facing the rain garden to redirect the water away from the storm drain. Sandbags as a temporary measure to get the configuration correct.

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Nick Cohen

10:17 am on Wednesday, November 16, 2011

Thanks for the suggestions, David! I think we're going to try to create a small asphalt berm around the catch basin, much like your idea. We'll monitor it with the students, and get their input too.

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