Overall Rating Gold - expired
Overall Score 66.99
Liaison Megan Butler
Submission Date July 18, 2014
Executive Letter Download

STARS v2.0

Macalester College
OP-27: Rainwater Management

Status Score Responsible Party
Complete 2.00 / 2.00 Nathan Lief
Facilities Director
"---" indicates that no data was submitted for this field

Does the institution use Low Impact Development (LID) practices as a matter of policy or standard practice to reduce rainwater/stormwater runoff volume and improve outgoing water quality for new construction, major renovation, and other projects?:

A brief description of the institution’s Low Impact Development (LID) practices:

All new building projects need to infiltrate the first inch of precipitation from the building site. This is a regulation in our area. We go further by having a goal of infiltrating the first inch of precipitation campus-wide. Storm water projects have been part of the Leonard Center, Markim Hall, and Janet Wallace Fine Arts Center building projects. Other stormwater projects include: Janet Wallace Fine Arts parking lot, porous pavers, porous concrete test, raingarden and green roofs.

+ Date Revised: July 25, 2014

Has the institution adopted a rainwater/stormwater management policy, plan, or strategies that mitigate the rainwater runoff impacts of ongoing campus operations through the use of green infrastructure? :

A brief description of the institution’s rainwater/stormwater management policy, plan, and/or strategies for ongoing campus operations:

Macalester developed a sustainable landscaping master plan in 2011 that addresses stormwater. Macalester's sustainability plan includes infiltrating the first inch of precipitate campus wide.

+ Date Revised: July 25, 2014

A brief description of any rainwater harvesting employed by the institution:

Rainwater harvested directly and stored/used by the institution, performance year:

A brief description of any rainwater filtering systems employed by the institution to treat water prior to release:

A brief description of any living or vegetated roofs on campus:

The MacCARES, a student organization, green roofing task force successfully installed a green roof on a connecting hallway between student dorms in 2006. The roof was installed using a containerized green roof block system. In 2008, another student imitative installed a green roof on Kagin Commmons and has sewn it with prairie grasses. The sustainability office replanted the Kagin green roof.

A brief description of any porous (i.e. permeable) paving employed by the institution:

Porous pavement are installed at Markim Hall, the Library plaza, the Woodlawn walkways, and areas around the Art and Music Departments.

A brief description of any downspout disconnection employed by the institution:

All downspouts on campus are either daylighted or flow to infiltration basins.

A brief description of any rain gardens on campus:

A student-designed rain garden is located near the library.

A brief description of any stormwater retention and/or detention ponds employed by the institution:

The "detention" ponds are located near the athletic game field and all run off from the fields goes to the detention area; by the Campus Center where all roof stormwater collects and George Dayton residence hall where site on roof stormwater is collected.

A brief description of any bioswales on campus (vegetated, compost or stone):

A brief description of any other rainwater management technologies or strategies employed by the institution:

Markim Hall has an underground groundwater return mechanism, involving perforated piping in the soil. A similar system was constructed for the Leonard Center Athletic complex which included about 450 feet of six foot diameter perforated pipe. A much larger scale system was installed for the Janet Wallace Fine Arts Center, involving some 750 ft of six foot diameter underground perforated piping.

The website URL where information about the institution’s rainwater management initiatives, plan or policy is available:

The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.