The U.S. Army Corps of Engineers is recommending that Lake Oroburg, a reservoir in the state’s north, be expanded.

The agency says it will be done with a $15 billion project that includes upgrading the dam’s spillway to accommodate water coming out of the reservoir.

The reservoir’s current capacity is 7.8 million acre-feet, enough to provide enough water to Lake Oroquio to support 2 million homes and businesses for 20 years.

The Lake Oroqua Basin is the largest lake in the U.K., with an area of about 1.5 million square miles.

Its spillway, the Lake Washington Dam, is only 6 percent full.

The Army Corps says the new spillway will allow the lake to increase its capacity to 7.5 billion acre-foot in 2023.

The new spillways will allow for an additional 875 million acre feet of water in 2035, the agency said.

The lake is now at a critical stage, with the reservoir at about half its capacity.

The dam is undergoing a major upgrade, with more than 30,000 personnel working on the project.