Water authorities reported on Sunday that the Sea of Galilee had risen by 87 centimeters in December and January and by over a meter during the past year.
The latest figures are the first since November following a two-month strike by authority workers, who returned to work this week.
During the walkout heavy rains washed across the country, partially replenishing water reserves that in the past years have run dangerously low.
A one-meter rise in water levels at the lake, Israel's primary water resource, requires around 160 cubic meters of water - equivalent to the volume of sea water that Israel's four desalination plants purify each year.
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