Watershed experienced over 60mm of rain
The Grand River watershed has expereinced high levels of rain, said the Grand River Conservation Authority.
The GRCA reported most of the climate stations in the watershed recorded a month’s worth of rain during the first week of May, and plenty of rain after that.
A slow-moving weather system May 3 to 5 delivered heavy rainfall to southern Ontario. Rain gauges recorded 60 to 75 mm of rain during this time.
The reservoirs reduced the peak flows by up to 30% directly downstream of the reservoirs and by about 20% in the central Grand River.
Water levels in the reservoirs are in the normal operating range, the authority reports.
