The campus currently maintains nearly all of its rainwater on site through the existing storm pipe network, overland flow routes, ditches, swales and ponds - collectively conveying water from 12 major catchment areas.
Existing Campus Infrastructure
The campus infrastructure network consists of the following interconnected systems, which must be considered as we develop a new rainwater management plan:
- District Energy System (DES): a hot water pipe system to heat most academic buildings on campus.
- Central Heating Plant used to heat six legacy academic buildings
- Natural gas system
- Power system
- Potable (drinking) water system
- Sewage system
The Main Pond is an engineered (manmade) rainwater retention reservoir located on the southeast side of campus. It has a maximum storage capacity of 3,570 m3 and is designed to overflow to a second adjacent pond with a maximum capacity of 5,070 m3.
Increasing levels of sediment and plant growth in recent years reduced the amount of water the pond can hold, essentially reducing its water storage functionality. In 2015, the pond and forebay underwent a mitigation and maintenance program which resulted in the removal of silts and vegetation to restore the storage capacity of the retention pond, to the level required to respond to the 2009 Campus Plan. The pond has also been identified as an ecological asset, providing wetland habitat to a number of species.
Existing Rainwater Related Issues
There is currently a risk of seasonal flooding in Parking Lot H and flooding across Innovation Drive in the event of a heavy rain storm. Additionally, a surcharge of rainwater from the manhole at the junction of University Way and Alumni Avenue has been documented during heavy rain.
Last reviewed 10/31/2016 9:03:38 AM