The move comes after the two sides held talks over the issue in March.
Data will be shared twice daily until October.
Last year, China stopped the exercise citing that the hydrological gathering sites were washed away due to floods. It also coincided with the 73-day Doklam stand-off that took place during the peak monsoon period.
The sharing of hydrological data also coincides with the two sides agreeing to resume the annual exercise between their armies. The exercise did not take place last due to the Doklam stand-off.
"Sharing hydrological data is very important for generating information on floods for the northeastern states," the official said.
Beijing has started providing data from three hydrological stations -- Nugesha, Yangcun and Nuxia, lying on the mainstream of the Brahmaputra, also known as Yarlung Zangbo in China -- and from the station at Tsada for the Sutlej, known as Langqen Zangbo, the official said.
India also pays an annual amount of Rs 1 crore to China for providing data on these two important rivers, the official added.
Interestingly, after the bilateral talks between Prime Minister Narendra Modi and Chinese President Xi Jinping on Saturday, an agreement was signed between India and China to share hydrological data for Brahmaputra.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)