Municipal Affairs and Environment

Registration 1783

Long Pond Weir

Proponent:  City of St. John's

Summary of Environmental Assessment Process

Project Description:

The proponent has submitted an application for the construction of a concrete weir at the outlet of Long Pond, immediately upstream of the Allandale Road Bridge in St. John’s.  Constructing the weir at the outlet of Long Pond will result in water being temporarily stored in Long Pond during a storm event and released at a lower flow rate.  Due to the increased storage capacity, the level of Long Pond would increase for a short period of time during a storm and return to its normal level a short time after the end of a storm.  The major benefit of the weir is that the peak flows downstream of Long Pond will be reduced, resulting in decreased costs associated with the implementation of flood control options at locations downstream.  Construction is expected to take place between June 1, 2015 and August 31, 2015 and will not be staged.

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