a a BRP tart

vhtee dds Doe

for Stage J development. ‘lo accommodate this development, the City has upgraded the existing Dominion Pump Station from 1.22 m*/s to 4.05 m*/s and has provided 100,000 mm of additional lowland storage to reduce impacts to the

remaining lower lying areas.

To reduce potential flooding probleras- in the Laurier area, it is possible to increase do\.nstream pumping to enable discharge of floodwaters during high river stages, increase ditch sizes to store larger volumes of water when floodgates are closed, increase the outflow during low river stages by providing

additional flood boxes, or increasing the capacity of existing flood boxes,

6.2 Recommendations It is recommended that a 1 m‘/s submersible propellor pump, complete with discharge piping and power be installed at the Laurier floodbox at an estimated cost of $200,000 and that the detailed design take place immediately. | CSee Fig 2-2) The City’s proposed ditch upgrading program should be adopted and expanded

to include a short section of ditch upstream of the Laurier floodbox. The known

o a u u a L e e z a

beaver dams shown on Figure 4-2 should also be removed. Section 588 of the

Municipal Act provides the City with a vehicle to undertake the improvements

necessary to maintain the proper flow of weter in the ditches, including

accessing private property.

: ‘ =

Approval. from Water Rights, Ministry of Environment, Lands and Parks and

aan

from Land Operations, Ministry of Environment, Lands and Parks are required

and applications should be made immediataly.

It is recommended that ditch levels upstream of the Laurier floodbox be routinely monitored during freshet and during upland peak winter flows to evaluate the success of this alternative in reducing flooding and timing requirements for installation of a second pump, as development of the Northeast

‘Sector proceeds,

teens ong

“Tre [PAGE

Dayton & Knight Lid