Up to 32mm of rain was dumped over the city in just two days last week, which boat club commodore Mick Henderson believes did a lot to change the outlook at the lake, even if the water levels have not changed.

"A little [rainfall] has come in, but not a lot. If we get more rain now, it'll start filling," Mr Henderson said.

"The dams and the catchments nearby are full, they're nearly 100 per cent so it's a good start if we get some good winter rain as well."

The timing of any future deluge is precarious though as Mr Henderson readies for renovations on the Apex Park and boat club side ramps.

"On the one hand, we need the rain but on the other hand, we need two of these ramps on the water to be extended," he said.

"We need to get that done in the next two weeks, but if we get 40 to 50mm falling in the next week we will have missed the opportunity to extend it at all."

In a statement from Wagga City Council on Monday afternoon, a similar conclusion was made.

"Although the recent rain has resulted in some inflows into the Lake, the water level still remains low and would require further significant rainfall events over winter to fill the Lake," said a spokesperson for the council.

Awaiting engineering plans and approvals, Mr Henderson is hoping to fast-track the extensions.

He is also playing a waiting game for updates on Wagga City Council's bid to divert treated water into the lake. A submission was tended to state water minister Melinda Pavey in March.

Mayor Greg Conkey told The Daily Advertiser he would be looking to "follow up the plans" in the near future.

"We want to get it started by September or October so the top-up will last through to the summer, and then in a normal year we would get rainfall in April or May which would see it through to the top-up in spring again," Mayor Conkey said.