Just last month Shoalhaven City Council foreshadowed water restrictions for mid-September but recent rainfall has turned it around.

Acting director of Shoalhaven Water Robert Horner said last week's rainfall managed to reach the whole of the catchment.

"The Shoalhaven catchment from Kangaroo Valley in the north right through Nerriga down to Braidwood, all areas experienced at least 50 millimetres of rain," Mr Horner said.

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"That's really picked up the river flows, the river flows actually went from around 47 megalitres per day before the rain to well over 1400 megalitres per day at the end of last week. This week, the flows have sort of steadied at around 430 megalitres per day.

"We have to stop pumping when the river flow drops to 90 megalitres per day. So we've now resumed pumping at Burrier from the Shoalhaven River up to our storage dam at Bamarang."

He said this rainfall meant the Shoalhaven can put off water restrictions.

"The overall effect has enabled Shoalhaven to put off the water restrictions that were impending," he said.

"Because the rain was so widespread we're now looking at a fairly sustained flow in the river over the next period and any rain that we receive in the catchment will certainly extend those good river flows."

Because of the rain Tallowa Dam has risen by around 600 millimetres, and is currently sitting at about 480 millimetres below spill level. Across the Shoalhaven, storage dams are sitting between 83 to 84 per cent capacity.

Mr Horner said although the outlook is still not great, the Shoalhaven is in a lucky position.

"The outlook is not great although there is a reasonably consistent forecast of rain, particularly over the next month. Not huge pools, but certainly some falls and any further follow up rain that we receive now will certainly help sustain the flow in the Shoalhaven River," he said.

"I think Shoalhaven is very, very lucky to have such a great catchment in the Shoalhaven River. You know, when you look at places out west that are really suffering we are very, very lucky with our water supply.