THE STATE Emergency Service Macquarie Region is keeping watch on the Talbragar River.
A low pressure trough and associated cold front is predicted to move across eastern NSW today and tomorrow, generating widespread shower and storm activity in the upper Hunter River and upper Talbragar River catchments.
The heaviest falls are expected tonight.
"Rainfall totals over the Australia Day weekend in the upper Talbragar River catchment is expected to cause some nuisance minor flooding along the Talbragar River downstream of Elong Elong," incident controller David Monk reported yesterday.
At 2pm yesterday the Talbragar River at Elong Elong was at 1.75 metres and rising fast.
People living, working or camping along the Talbragar River were advised to monitor its height and be ready to move quickly.
Farmers and landholders were asked to consider relocating livestock, pumps and machinery.
Motorists are being urged not to try to cross Talbragar River causeways should they become flooded.