GRCA issues flood warning for parts of the Grand River watershed

The warm weather this weekend has prompted GRCA to issue a flood warning for parts of the Grand River watershed and a flood watch for the entire watershed.

Flood Warning issued for parts of the Grand River watershed, while flood watch issued for entire watershed

The warm weather expected this weekend has prompted GRCA to issue a flood warning for parts of the Grand River watershed and a flood watch for the entire watershed. (Jackie Sharkey/ CBC News)

Grand River Conservation Authority (GRCA) has issued a flood warning for parts of the Grand River Watershed and a flood watch for the entire watershed as a result of warmer temperatures expected this long weekend.

Monday and Tuesday are expected to have highs around 8 C with periods of rain, according to Environment Canada. 

"Rain is forecast to begin Monday and continue into Tuesday bringing up to 40mm of rainfall across the watershed," said GRCA in a release.

"The combination of warm temperatures and rainfall are expected to trigger moderate runoff into the river system."

However, a break up of ice is expected to add to current ice jams, which can create ice jam flooding in the Grand River that flows through Cambridge, Conestogo, Brantford and Cayuga. 

Elevated flows

 GRCA said snow melt and elevated flows are expected in rivers and streams across the watershed, which may result in minor flooding in low lying areas.

Major reservoirs at Belwood, Conestogo, Guelph, Luther, Woolwich, Laurel, and Shades have storage available to maintain runoffs.

As a result of the higher flows and uncertain ice conditions across the watershed, GRCA has cancelled ice fishing at its lakes, including the Ice Fishing Day scheduled for Family Day at Pinehurst Lake Park.