The Northpoint reservoir was built in the northern reaches of the region, designed to regulate the flow of water into the valley near Nuka-World.
The top of the reservoir served as a gated roadway, with an offramp leading down to the waterside buildings. There is a small, abandoned office building and house on the west bank of the river. Near where the mirelurk queen spawns is a rowboat with several Nuka-Colas and a duffle bag. The left side of the dam is accessible, but the right side is beyond the edge of the map.