LEVELS in Yorkshire Water's reservoirs rose by nearly five per cent last week - the largest weekly increase in stocks since October last year.
The increase is the fourth in a month and eases fears of a drought.
Reservoirs now stand at 58 per cent full - an increase of 15 % in the last four weeks.
However, they are still low for this time of year.
Richard Flint, Yorkshire Water's director of water business, said: "Downpours on Monday and Tuesday last week across most of the county resulted in reservoir stocks and most river levels rising for the fourth week running.
"Our grid system - a massive underground network of pipes - is enabling us to transfer water all over the region to meet greatest demand.
"If it rains heavily in North Yorkshire we can move water to supply the rest of the region or vice versa."
Yorkshire Water supplies 1.3 billion litres of drinking water to customers each day.
Mr Flint added: "Throughout the prolonged dry spell these supplies have not been affected.
"This is due to the water company sourcing water not just from reservoirs, but also rivers such as the Derwent, Ouse, Ure, Wharfe, and Hull and underground aquifers called boreholes. `'
Mr Flint said the use of river and borehole supplies was enabling a rapid rate of recovery in the region's reservoir stocks.
"We are currently abstracting around 40 % of the water we supply customers with each day from rivers, and a further 20 per cent from boreholes.
"This sustainable abstraction is normal practice when river levels are high and is consented to by the Environment Agency. "As we are using less reservoir water in daily supply this is allowing their levels to increase dramatically, hence the biggest rise for nearly 14 months."
Compensation reservoirs, which are used to maintain river levels during the summer, have also started to rise.
These reservoirs are often the last to fill as they are usually situated at the bottom of a valley.
In the last month Gouthwaite reservoir in North Yorkshire has risen from 21 to 63% full and Thornton Moor reservoir near Haworth has increased by 50 per cent. It now stands at 99 per cent full. Lindley Wood reservoir in the Washburn Valley, near Otley, which was drained earlier in the year to allow dam improvement works to be completed safely, has also risen from 15 % at the start of November to 37%.
Regular updates on water resources will be posted on the Yorkshire Water website www.yorkshirewater.com