More on Flood Protection in Manitoba
Today will be sunny except cloudy over eastern sections this morning. The high will be -3C(27F). Tonight will start clear but will see increasing cloudiness after midnight. The overnight low will be -12C(10F).
The next layer of defence against the spring runoff is the Portage Diversion.
I started my career with the province of Manitoba in 1968 working on the project.
my job there was to ensure the dykes were compacted to ensure they ere impermeable.
From The Province of Manitoba Website.
•This 29 km (18 miles) channel diverts water from the Assiniboine River into Lake Manitoba, just west of Portage la Prairie.
•The removal of up to 25,000 cfs of flood water provides flood protection for the City of Winnipeg and areas along the Assiniboine River and also supports flood protection along the Red River north of Winnipeg.
•The project was built from 1965 to 1970 and cost $20.5 million.
The control structure on the assiniboine River.
The Channel leading to Lake Manitoba
Due to a 50 foot drop in elevation between the river and the lake 2 concrete structures, called gradient control structures, were built to stop erosion of the dyking.
Outlet to Lake Manitoba
Gradient Control Structure