The State Emergency Service (SES) is sandbagging low lying businesses in the Molong central business district as waters in Molong Creek continue to rise.
Heavy rainfall has fallen in the catchment upstream of Molong.
Flash flooding of low lying rural areas, local roads and causeways and lower parts of the Molong CBD area is imminent.
The gauge downstream of Borenore Creek Junction has exceeded 3.0m this is expected to cause minor flooding at Molong.
Molong Creek is expected to reach minor flood level of 3.5 metre at 6.00pm tonight.
Some local roads including the Mitchell Highway may close due to fast rising flood water.
Molong Creek is expected to break it banks placing livestock and equipment in low-lying paddocks at risk.
Flooding in the low lying areas of Molong is expected to occur with very fast rising flood water in Molong Creek offering little or no warning.
Flooding is expected to occur lower than that experienced in November 2005, when water entered residential and business properties in the low lying parts of Watson, Bank, Thistle, Edward, Bett and Hill Streets, including the Molong Caravan Park
The Mitchell Highway between Molong and Wellington is closed approximately 23km out of Molong due to flooding at Native Dog Creek.