The main road connecting Eglinton and Kelso remained closed for most of yesterday as Bathurst Regional Council crews cleared the Saltram Creek causeway.

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With more rain predicted for Friday and Saturday and the Bureau of Meteorology [BOM] predicting a La Nina alert for spring, Bathurst's State Emergency Service [SES] is calling for motorists to exercise caution around flood waters.

"Our message is simple: don't drive through flood water, it's not worth the risk," SES Western Zone community capability officer David Rankine said.

"The risk doesn't only fall on the driver and passengers, but also the SES volunteers who have to traverse the flood to rescue people."

According to the SES, around 79 per cent of flood rescue callouts in NSW are men under the age of 29.

Mr Rankine said the Bathurst SES unit has experienced a number of flood rescue call-outs over the past few weeks, including two in six hours on August 24.

"Recent flood events across the Western Zone have caused entire portions of road on bridges and causeways to wash away," he said.

"All it takes is 15 centimetres of fast-flowing water to wash a car off a causeway."

With the La Nina prediction tipping a wetter than average spring and summer period, Mr Rankine said the SES is anticipating a busy period for flash flooding operations.

"As the Ben Chifley Dam is now at capacity, we can expect more water to build up in catchment areas, which creates a greater risk of flood events," he said.

"You wouldn't drive through a bushfire, so the same goes for flood waters."

Bathurst has recorded seven months of above-average rainfall so far in 2020.

According to BOM, Bathurst has a 70 per cent chance of receiving 6 to 10 millimetres of rain on Friday.