The rupee had on Thursday closed at a historic low of 70.15 to the dollar, making it one of the worst performing emerging market currencies, losing over 9 per cent since January this year.
The currency market was closed on Friday for Parsi New Year.
In the previous week, the reserves had dipped by $1.489 billion to $402.703 billion, as per the RBI data.
Since April 13 till August 17, the country's reserves have been depleted by $25.14 billion due to the RBI's intervention in the foreign exchange market.
That the Reserve Bank has been heavily intervening in the market is clear as it has been a net seller of the US currency between April and June. The monetary authority has sold a massive USD 14.434 billion of the US currency on a net basis in the three months in the spot market.
In the week to August 10, the foreign currency assets, a major component of the overall reserves, plummeted by $1.949 billion to $376.265 billion, as per the latest data from the central bank.
Expressed in US dollar terms, foreign currency assets include the effect of appreciation/depreciation of the non-US currencies such as the euro, pound and the yen held in the reserves.
However, gold reserves rose by $145.6 million to $20.691 billion in the reporting week.
The special drawing rights with the International Monetary Fund (IMF) dipped by $9.2 million to $1.466 billion. The country's reserve position with the IMF also declined by $9.2 million to $2.458 billion, the apex bank said.