The U.S. Strategic Petroleum Reserve fell by approximately 6.1 million barrels last week, bringing the federal stockpile down to 298.7 million barrels, its lowest level since January 1983, according to Department of Energy data.

The latest decline is part of a broader release of approximately 172 million barrels, authorized through existing agreements. Congress has approved multiple sales and emergency releases in recent years, steadily reducing the reserve from the much higher levels maintained during previous decades.

The Strategic Petroleum Reserve was created as a safeguard against major disruptions to the nation's oil supply. Stored in underground facilities along the Gulf Coast, the reserve is intended to provide the federal government with an emergency source of crude oil during severe supply shortages or other energy crises.

Energy analysts have warned that the continued decline could limit the government's ability to respond to a future disruption in global oil supplies. A smaller reserve would leave Washington with fewer barrels available for emergency releases if a major supply shock were to affect domestic energy markets.

The reserve has yet to return to the levels seen before recent large-scale releases. The Biden administration authorized significant withdrawals in response to energy market pressures, while additional congressionally approved sales have contributed to the stockpile's continued decline.

The latest figures show the cumulative effect of those withdrawals, with the reserve now holding less than 300 million barrels for the first time in decades.

The Department of Energy has not announced immediate plans to restore the stockpile to its historical levels. The pace of future purchases and releases will determine how quickly the Strategic Petroleum Reserve can rebuild its emergency capacity.