The Grand River Conservation Authority has expanded its flood warning to include New Hamburg, as the Nith river is added to the list of waterways affected by Friday's huge rainfall.

"Flows are forecast to peak at Warning Level 1 in New Hamburg," the agency said Friday. "Wilmot Township flood coordinators are advised to warn residents in the Level 1 area including parts of Milton and Jacob Streets."

A flood watch for the Nith was also issued for Ayr. 

"Flows are forecast to peak below warning levels. Conditions are being monitored closely and flood coordinators will be contacted as necessary," the GRCA said of that community.

Grand River in Elora

The Grand River behind businesses in Elora is creeping up to the steps behind Amy Corner's home. (Submitted by: Amy Corner)

Widespread

The Grand River Conservation Authority previously issued flood warnings for parts of the City of Kitchener, Town of Grand Valley, Township of Mapleton, Township of Centre Wellington and Township of Woolwich, as well as the Grand River areas south of Cambridge and North Dumfries.

It comes after 100 millimetres of rain fell in the northern part of the Grand River watershed between 3 and 5 a.m. Friday.