| Overall Rating | Gold |
|---|---|
| Overall Score | 83.12 |
| Liaison | Patrick McKee |
| Submission Date | Nov. 16, 2023 |
University of Connecticut
IN-36: Stormwater Modeling
| Status | Score | Responsible Party |
|---|---|---|
|
0.50 / 0.50 |
Patrick
McKee Senior Sustainability Program Manager Office of Sustainability |
A brief description of the methodology/tool used to calculate the percentile local or regional rainfall events for which the institution manages runoff on-site using LID practices and green infrastructure:
There are 65 low impact development sites throughout the UConn campus. There is a mixture of rain gardens, pervious pavement, pervious cement, green roofs, and bioretention basins. 64 of these are designed for 90th percentile rainfall events, while one bioretention basin is built for 95th percentile rainfall events.
Some of the most recent LID/Green Stormwater Infrastructure on campus comes from the Science 1 Research Center, which is the newest building to be completed on campus. Opened in the Spring of 2023, it includes a large bioretention swale system, and a pervious asphalt parking lot.
The University of Connecticut sizes low impact development and green stormwater in accordance with the Connecticut Stormwater Quality Manual which utilizes the Water Quality Volume (WQV) concept.
WQV is the volume of runoff generated by the water quality storm, defined as the 90th percentile rainfall event that accounts for 90 percent of all 24-hour storms on an average annual basis. A 90th percentile rainfall event was previously a 1-inch event and will be changed to 1.3-inch rain event effective March 30, 2024. To determine the size of green stormwater infrastructure the Water Quality Volume Calculation can be used which is found on page 46 of the Connecticut Stormwater Quality Manual.
Additionally, NEMO (Nonpoint Education for Municipal Officials) which is a part of the Center for Land Use Education and Research developed a rain garden sizing guide that can used to size raingardens according to their rainfall depth and storage depth.
Connecticut Stormwater Quality Manual: https://portal.ct.gov/-/media/DEEP/water/water_quality_management/Guidance/SWM_Feb_2024.pdf
Sizing Guidelines: https://nemo.uconn.edu/raingardens/sizing-map/
Percentile of local or regional rainfall events for which the institution manages runoff on-site using LID practices and green infrastructure:
Website URL where information about the stormwater modeling is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
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.