final Chapter In Flood Proofing Manitoba

By: plapman , 6:54 PM GMT on February 24, 2013

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Today will be mainly cloudy with a southerly wind at 20 km/h and a high of -3c(27F).
Tonight will start partly cloudy then becoming clear near midnight. The overnight low will be -13C(9F).
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I'm a bit late getting online today but I'll post the final installment for the flood protection series in manitoba.
Red River Floodway from the Province of manitoba's website.

One of the most significant flood protection measures in Manitoba is the Red River Floodway, which protects the City of Winnipeg. Starting in 2005, Canada and Manitoba invested $665 million to further expand the Red River Floodway.

•The original floodway was built between 1962 and 1968 and cost $63 million.
•At the time, excavation of the floodway channel was the second largest earth moving project in the world (second only to the Panama Canal and larger than the Suez Canal project).
•Since 1968, it has prevented more than $30 billion (in 2009 dollars) in flood damage in Winnipeg.
•It is often referred to as Duff's Ditch in recognition of then-Premier Duff Roblin, who spearheaded the development the floodway.
•The expansion of the current floodway system (including the West Dike and channel outlet) began after the 1997 flood, to protect the City of Winnipeg from a one-in-700-year flood. It increased the floodway's capacity - from 90,000 cfs (cubic feet per second) to 140,000 cfs. The floodway operates by diverting a portion of the Red River flow around Winnipeg through the floodway channel. During flooding, as the river naturally rises, it spills over the floodway channel entrance and flows down the floodway channel. When this happens, the river water flows through two routes - through the city and through the floodway. At the same time, it drops below its natural level, south of the floodway inlet.
•When the floodway gates are raised, the water level south of the floodway inlet is restored to its natural level which, in turn, allows more water to spill into the floodway. As Red River flows continue to increase, the level south of the inlet drops below natural again and the gates are raised further. This process continues as long as the flow in the Red River continues to increase.
•During the majority of floods, the floodway is operated to ensure that the water level south of the city is maintained at the natural level - that is the level that would occur if the flood control works did not exist.
•In a major flood, even larger than 1997, the flow through the city will be controlled with the guidance of three spring floodway operating rules. These rules are designed to ensure Winnipeg's primary diking system is not overwhelmed. When these rules are implemented to protect the city, there may be instances when additional water going through the floodway causes artificial flooding of land and roads south of the floodway inlet. In recognition of this possibility, the Manitoba government has legislation in place which provides compensation to individuals impacted by this artificial flooding.
•A fourth floodway operating rule is also in place, but is only applied during the summer when high water levels affect Winnipeg's storm sewer and combined sewer systems. The combination of high water and a high intensity rain storm can overwhelm the sewer systems causing basement flooding. If this occurs, operation of the floodway can lower water levels in the city, reducing the damages and potential health risk caused by basement flooding.
•The floodway is recognized as a National Historic Civil Engineering Site and is considered one of the world's 16 engineering marvels.
Map of Floodway from MHS.MB swebsite

Control Structure on the Red River from the Winnipeg Free Press

With so many photos on the web I found it hard to add more without infringing on a copyright. i wish i had access to the old files i used while working as government photos become public domain.

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7. WunderAlertBot (Admin)
2:33 PM GMT on February 26, 2013
plapman has created a new entry.
6. Alleyoops
1:00 PM GMT on February 26, 2013
Good morning Tony. Hope you have a great day. Looking forward to the rest of the series.
Member Since: April 18, 2007 Posts: 190 Comments: 29418
5. GardenGrrl
1:43 AM GMT on February 26, 2013
Great series! Thanks :)
Member Since: March 25, 2007 Posts: 248 Comments: 9249
4. Alleyoops
4:48 PM GMT on February 25, 2013
Hi Tony, glad to hear you will be adding to this information. Sure looking forward to the great read.

Have a wonderful day dear one. We are enjoying the bit of warmth 36F, sunshine and melting snow at the moment. Who knows what that low coming up from the South will bring us by tomorrow night. I would rather rain but we should not really complain. Just take it with a grain of salt as Feb is almost over for another year.

Have a great day.
Member Since: April 18, 2007 Posts: 190 Comments: 29418
3. Alleyoops
11:54 PM GMT on February 24, 2013
Hi Tony, great blog information. Loved it. Hope you have had a great Sunday. A new week is soon upon us again. Oh well, looking forward to the end of this miserable month. Have a great evening.
Member Since: April 18, 2007 Posts: 190 Comments: 29418
2. unclemush
11:42 PM GMT on February 24, 2013
Hi Tony nice blogs! I'm glad this month is almost over.I'm not fond of it!Least favorite month!!
Member Since: July 7, 2001 Posts: 59 Comments: 13166
1. Ylee
11:18 PM GMT on February 24, 2013
Nice blog, Tony! You would think the additional photos would be on some government website!

I didn't check Wikipedia, but there may have been some additional pics there, I'm not sure.

Hope you're having a good Sunday!
Member Since: February 3, 2011 Posts: 91 Comments: 15269

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About plapman

Retired and loving it. If I'd have known about retirement befor I started my 40 year career with the government of Manitoba I'd have retired first. :)

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