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Low Impact Development (LID)
Rural Case Study
Drumlin Farm Wildlife SanctuaryLincoln, MA
The Drumlin Farm Wildlife Sanctuary is a 232-acre facility that features a nature center, walking trails; farmyard and seasonal farm stand selling sustainably grown foods. A new educational facility called the "Discovery Barn" is planned near a pond and a vegetated wetland and will incorporate a range of LID strategies to mitigate impacts. Selected LID techniques or Best Management Practices (BMPs) included bioretention systems, cisterns, a green roof, and a vegetated filter strip.
Bioretention Systems:A bioretention system, also referred to as a "rain garden" or a "biofilter," will intercept road runoff and filter it prior to discharge to a nearby pond.
Water quality swales are essentially shallow, open ditches that can improve water quality by infiltrating and filtering the water through vegetation that grows within the swale. When designed properly, they can be used to retain and pre-treat stormwater runoff. At Drumlin Farm, a water quality inlet and swale will treat runoff from the horse paddock.
Cisterns and Recycled Roof Runoff:
Runoff from the roof of the new building will be collected in cisterns and utilized at an adjacent greenhouse as irrigation water.
Green Roof:
This will serve to reduce runoff and also is intended as a demonstration project for educational purposes.
Vegetated Filter Strip:
A vegetative filter strip is proposed adjacent to an existing chicken "coop" building, which is in close proximity to a pond. The strip will capture any stormwater runoff from the chicken "coop" and will provide filtering of the runoff prior to infiltration to the groundwater.
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