The total reserves had stood at USD 290.46 billion in the previous reporting week.
Foreign currency assets, a major component of the forex reserves, were up by USD 1.56 billion to USD 259.18 billion for the week ended Sep 7, Reserve Bank's weekly statistical supplement showed today.
Foreign currency assets expressed in US dollar terms include the effect of appreciation or depreciation of the non-US currencies, such as the euro, pound and yen, held in the reserves.
The gold reserves remained unchanged at USD 26.23 billion during the week, the apex bank said.
For the week under review, the special drawing rights (SDRs) were up by USD 13.5 million to USD 4.4 billion, while the country's reserve position with the IMF was also up USD 6.8 million to USD 2.21 billion, according to the RBI data.