Roads in and out of Wallacia may not re-open until Wednesday.
Silverdale Road (Blaxlands Crossing) and Mulgoa Road (Jerrys Creek) both remain closed following intense rainfall over the last few days.
It’s too dangerous for cars to cross the floodwaters.
Wallacia Public School has confirmed it will open tomorrow after classes were cancelled today due to the weather conditions.
The Nepean River is peaking near 8.0 metres at Wallacia.
At Penrith the river is peaking around 3.8 metres with very minor flooding.
The Penrith SES has received hundreds of calls for help over the last few days.
Sports fields around Penrith remain closed due to flooding.