The Red River Floodway is Operational
There were many objections from opposition parties during debates
concerning whether to build the Red River Floodway or not. Today,
there are few objections. After all, this flood is only one of
several which have resulted in the Floodway gates being raised in
order to protect the City of Winnipeg. The 1997 flood has generated
much conjecture about how the Floodway will handle this massive
amount of water arriving from the south.
Now is a good time to explain to you how the Floodway operates by
looking at the photo to the right. Water from the Red River
flows up from the south and arrives at the location of the Red River
Floodway gate structure. During normal spring flows, the Floodway
gates are down, thereby allowing flow from the Red River to the
south to flow through the gate structure and proceed through the
City of Winnipeg. During periods of flood conditions, the gates of
the Floodway Control Structure are raised, causing a portion of what
was heading for the Red River channel through the City to be
redirected up the floodway channel. On the entrance to the floodway
channel, there is a "lip" that exists to reduce the probability of
ice entering the floodway channel.
Today, the flow is such that the Red River Floodway gates have
been raised. This restricts the amount of flow allowed into the Red
River as it enters Winnipeg. What cannot flow through the floodway
gates is then pushed over the lip and will flow downstream into the
Floodway Channel. This channel by-passes the City of Winnipeg - and
in the process provides a high degree of protection against overland
flooding to most areas within the City of Winnipeg. So , when you
look at the Floodway Gate Structure in the photo, and you see the
white waves from the flow passing through the gates, this is the
flow that is permitted to enter the City of Winnipeg. The remaining
flow is directed into the Floodway channel that diverts around the
City.
Both of the above photos illustrate the massive amount of water
proceeding towards Winnipeg. This amount of water, if allowed to
proceed straight through the Red River channel, could cause very
serious flooding within the City of Winnipeg.
On the right of the floodway channel pictured above, overland
flow accumulates at the dike of the floodway channel. The channel
itself has the capacity to handle more water than it is seeing at
present. Please note the that the floodway channel walls have
significant "freeboard" or space available for more water before any
risk of overtopping occurs. The City of Winnipeg depends on the
Floodway to act as a SUPPLEMENT to moving water from the Red River .
The Floodway was designed for 60,000 cubic feet per second (cfs)
flows, but can be made to handle a maximum of 100,000 cfs. The Red
River channel through the City has handled a maximum of 88,000 cfs
in 1966 without breaching the City's primary dike system.
Please remember: Many of the images you will see contain the
homes of people who have been uprooted from their families, homes,
and livelihoods. They need your help NOW. Please contact your LOCAL
RED CROSS and tell them you wish to donate to the FUND FOR MANITOBA
FLOOD RELIEF......THANK YOU FOR YOUR CARING SUPPORT!
Please watch this space for additional updates. We will be
bringing you more stories in the days ahead. Please do not hesitate to
contact us if you have stories and photos
you can share with us. We'll get them on this site immediately upon
receiving them. You can also telephone us to contribute your flood
stories by calling our flood info hotline at 992-2203. |