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  • Rain Garden Training
  • Rain Garden Brochure
  • Demonstration Sites
Participants of past rain garden trainings install plants during the field installation. (Right photo courtesy of Amy Boyajian, Rutgers University)

Residential Rain Garden Training

A practical course for landscapers, designers, maintenance care providers and volunteers. 

Rain gardens are vegetated areas designed and built to accept stormwater runoff from surfaces including rooftops, roads and compacted soils. Rain gardens are increasingly being used by homeowners and municipalities to reduce the impact of stormwater on local waterways and the Long Island Sound.

2014 Schedule

Dates Location Details & Registration

Wednesday June 11
9:00 am—3:00 pm

Keney Park Pond House
383 Edgewood St.
Hartford, CT

Don't wait! Seating for this workshop is limited, so please register by June, 6.

Register  Here

Friday June 13
9:00 am—3:00 pm

Neighborhood Housing Services of New Haven
333 Sherman Ave.
New Haven, CT

Don't wait! Seating for this workshop is limited, so please register by June, 6.

Register  Here


Past Events

Dates Location Details & Registration

Thursday, April 4 (Classroom)
9:00 am—3:30 pm

Friday, April 5 (Field Installation)
8:30 am—12:30 pm

Wilton Old Town Hall
69 Ridgefield Road
Wilton, CT


Sponsored by CT NEMO, Norwalk River Watershed Initiative and Wilton Garden Club.


Rain Gardens in Connecticut: A Design Guide for Homeowners
created by Mike Dietz and Karen Filchak, UConn College of Agriculture and Natural Resources' Department of Extension

The guide provides simple yet detailed information on how to construct a rain garden at your own home, including a plant list.

Read Publication

Haddam Demonstration Site 1

May 2012 Rain Garden

Rain GardenNEMO's most recent rain garden on the Haddam Cooperative Extension grounds is in the back of the building. One of the building's downspouts was connected to the rain garden via an underground pipe. The main purpose of this demonstration rain garden was to be able to document its creation for use on this website and Smartphone application (see details on Rain Garden App).

See a short video below, and read more about rain gardens and this installation at the Record Journal's website.

Haddam Demonstration Site 2


September 2002 Rain Garden

Our first rain garden (actually two side-by-side) on the Haddam Cooperative Extension grounds was a collaboration with the Department of Natural Resources Management and Engineering (NRME). NRME's John Clausen worked with the NEMO Program to create the vegetated rain gardens to receive runoff from the back half of the Center's large conference room roof. This was a research project that monitored and analyzed both the quantity and quality of roof runoff as it entered and flowed through the gardens.

The paired rain gardens were sized to contain one inch of roof runoff. Monitoring for flow and pollutants was performed by Michael Dietz and John Clausen from November 2002 through December 2004. Monitoring has ceased, but the gardens continue to be used as part of the sustainable landscape demonstration site through the NEMO program.

View Photo Gallery

Results from the demo site have been published in several journals. Email Michael Dietz for copies of the following articles.

Dietz, M. E., and Clausen, J. C. 2005. A field evaluation of rain garden flow and pollutant treatment. Water, Air and Soil Pollution, Vol. 167, 123-138.

Dietz, M. E., and Clausen, J. C. 2005. Saturation to Improve Pollutant Retention in a Rain Garden. Environmental, Science & Technology, 40 (4), pp 1335–1340.



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