A fresh flood warning has been issued for people living on and around the Avon River and Mortlock River including Northam, Beverley, York and Toodyay.
Northam's Shire President Steven Pollard said the town had survived intact overnight with water levels high, but steady.
![Water levels in the Avon River are expected to rise dramatically during Saturday leading to widespread flooding.](/web/20170211044240im_/http://www.watoday.com.au/content/dam/images/g/u/a/o/d/z/image.related.articleLeadwide.620x349.guao7x.png/1486778818174.png)
However he warned the worst could still be to come with forecasts predicting the rivers might not see their highest water levels until some time tonight, Saturday.
"Overnight conditions were unchanged with water levels still very high but not rising or dropping. The status quo remains very concerning," Mr Pollard said.
Following yesterday's flood warning about a dozen people registered at emergency centre set up at the Northam Recreation Centre, but none ended up spending the night there.
"I understand they all managed to stay with friends or family or go to Perth so the centre wasn't needed for accommodation overnight and we shut it down around 9.30 last night," said Mr Pollard.
"But its available to be opened up again if and when required and it might well be needed because forecasters are expecting water levels to continue to rise until perhaps 8, 9 , or even 11 o'clock tonight," he said.
"There is still a lot more water to water to come."
If you planning a riverside BBQ at the scenic Avon river today you may wish to reschedule! #fb #ypd pic.twitter.com/pbOHGSWgq0
— York Police (WA) (@York_Police) February 10, 2017
In a statement issued just before 8am the Bureau of Meteorology said the Avon River was expected to rise dramatically during the course of Saturday.
"The Avon River at Beverley Bridge is currently at 1.44 metres and rising. The river may reach the major flood level of 2.5 metres on ?Saturday afternoon," said the statement.
"More major flooding may occur along the Avon River from Beverley to Northam. York may be affected in the morning.
The warning from the Department of Fire and Emergency Services warning says that people living to the south east of Northam should prepare for possible minor and major flooding today and over the coming days.
People are advised to relocate livestock and equipment to high land and prepare an emergency kit including enough canned food and water to last four days.
The Northam-Toodyay Road has been shut in both directions from Great Eastern Highway to Toodyay Road, Dumbarton, as has the Collie-Lake King Road from Vernal Street to Mount Pleasant Road.
Drivers have been warned to take car at crossings and floodways as river levels may rise rapidly. They have also been advised to carry extra food and water when travelling in case of long delays at crossings.
The Bureau of Meteorology says major flooding is occurring along the Mortlock River North at Frenches and is expected along the Mortlock River East at O'Driscoll's Farm.