Posted Thursday February 7, 2019


Flood Warning – Southern Grand River

Southern Grand River Downstream of Brantford: River ice is still present in the southern river. Potential for ice jams and flooding is possible in low lying areas that are typically prone to flooding. These areas include River Drive (south of Caledonia), Sims Lock Road, Grand Sports Road, Town of Cayuga and community of Port Maitland. Haldimand flood co-ordinators are asked to monitor these locations through Wednesday evening. If the ice sheet upstream of Caledonia dam releases, ice jam flooding could result in these areas.

The Grand River Conservation Authority is issuing the following Flood Warning message for the southern Grand River watershed. This message replaces Flood Messages #1 and #2.

River levels and flows have peaked and are receding in the northern and central Grand River watershed, north of Brantford. The Nith River through Ayr is expected to peak late Wednesday afternoon/early evening while the lower Nith River will peak Wednesday evening.

Flows through the community of Ayr on the Nith River are expected to peak below Warning Zone 1.

River flows reached their peak in the Grand River through Brantford around 8:00 pm Tuesday night.

River flows peaked in the Grand River through Caledonia around noon on Wednesday and are forecast to peak through the community of York Wednesday afternoon. Flooding was reported through Six Nations Territory along 4th line Road and along Newport Road in Brant County. Flooding of these roads was caused by ice jams in the river through this reach.

Flows are forecast to peak through Cayuga on Wednesday evening and through Dunnville and Port Maitland early Thursday morning. Much of the river reach through Cayuga is open and free of ice at this time. Ice has moved downstream of the community of Cayuga but is still intact in the river between Dunnville and Cayuga.

GRCA’s major reservoirs at Belwood, Conestogo, Guelph, Luther, Woolwich, Laurel, and Shade’s Mills are being used to manage runoff from this event and reduce flooding downstream of these reservoirs. Small increases in discharge were initiated at Belwood, Conestogo and Guelph reservoirs this morning. River flows will remain high over the next few days.

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