Central Grand flows

Critical Flows

Critical flows table: This chart will help you understand the significance of various flows levels. The chart shows the name of the gauge, the affected communities and various flow levels along with the significance of that flow level. Flows are measured in cubic metres per second, i.e. the amount of water flowing past a spot in one second.
Gauge (Community) Flow (m3/s) Significance
West Montrose 5 Normal summer low flow
125 Campground floods
Up to 180 Warning Zone 1
180 - 280 Warning Zone 2; village floods
280 - 400 Warning Zone 3
670 1974 flood
400 - 700 Warning Zone 4
700 - 1400 Warning Zone 5
Bridgeport 11 Normal summer low flow
265 Water at banks; low-lying areas flooded
1,300 1974 flood
1,700 Dike capacity
Victoria St (Kitchener) 265 Water at banks; low-lying areas flooded
Beaverdale (Cambridge) See Speed & Eramosa River chart
St. Jacobs See Conestogo River chart
Doon (Kitchener) 11 Normal summer low flow
320 Water at banks; low-lying areas flooded
1,420 1974 flood
Galt (Cambridge) 15 Normal summer low flow
400 Water at banks; low-lying areas flooded
638 Water St. closed south of Ainslie
1,050 Concession St. bridge closed
1,472 Main St. bridge closed
1,550 1974 flood
1,628 Parkhill St. bridge closed
2,352 Dike capacity

Location of flow gauges in the Central Grand River area

map of Central Grand River flow gauges

Provisional Data

Caution: Users of the GRCA's real-time data are cautioned to consider the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business.

The Grand River Conservation Authority assumes no responsibility for the correctness of the information contained in this website nor liability to any user of such information, regardless of the purpose.

Warning! River levels and flows can change rapidly.

Contact Us

Grand River Conservation Authority
400 Clyde Road, PO Box 729
Cambridge, ON
N1R 5W6
Phone: 519-621-2761
Toll Free: 1-866-900-4722
grca@grandriver.ca