One of those needing assistance was Caitlin Barrett, who came home on Monday to find the rain had seeped through the doors and roof tiles into her Mount Austin home.

"Last night we got back from shopping and noticed the roof was leaking in the living room. It's coming through all the door frames," Ms Barrett said.

"If things get fixed I'm happy to stay the night, but if things keep leaking through I can't use the power," Ms Barrett said.

SES volunteer Brendan Marshall returned from a trip to Canberra on Tuesday, and the moment he returned to Wagga he was dispatched to deal with all the leakages breaking out all over town.

"We're here with a roof job at the moment. What we're trying to do is tarp the roof up, stop the leaking, try to unblock some of the gutters, try to let it free flow and stop the water coming inside the house," Mr Marshall said.

"Next few days I'll most likely be busy, scaling roofs, taking down trees, or doing a bit of floodwork if it does flood here."

Wagga deputy unit commander Justin Bentley said the crews had been kept busy over the last few days, being called out to several dozen jobs since Sunday.

However Mr Bentley warned the worst was yet to come, with crews standing by at the ready in anticipation for more emergency callouts over the next few days.

"We'll be in and out for the next few days, responding to calls for assistance whether roof leaking, trees down, that sort of thing. Then in the following few days we'll be watching the river levels for minor flooding," Mr Bentley said.

"Over the last few days it's been building up as the weather got worse and worse and the jobs have been coming in. It'll ramp up over the next few days, but we're lucky we're not like Sydney and the North Coast."

Mr Bentley is warning residents not to drive through floodwaters, not to drive in heavy rainfall unless necessary, and for nearby residents to keep an eye out for the river levels.

SES volunteers can be contacted for call-outs on 132 500, and in an emergency residents should call 000.