That magical combination has filled Lake Rowlands to the brim and the general manager of Central Tablelands Water Gavin Rhodes couldn't be happier.

"The rapid rate at which Lake Rowlands has filled has been incredible," he said.

"With the catchment now saturated and all the tributaries flowing, the lake increased from 32.5% in late April to topping by the end of July.

"During July the dam increased by over 40%, with a 20% increase occurring over a 30 hour period."

Mr Rhodes said that it just shows how suitable Lake Rowlands is as a location to increase water storage.

"It once again proves the reliability of the catchment," he said.

"It really strengthens the justification for augmenting Lake Rowlands to assist in managing future droughts for our consumers and the region."

CTW has eased water restrictions for the entire CTW supply network from Level 4 to Level 1 commencing Monday 3 August.