This is a relatively large lake with a few locations on its shoreline, such as the Poseidon reservoir to the northwest, Natick Banks including its police department to the west, an unmarked pre-War military checkpoint to the southwest, and the Mass Fusion disposal site to the southeast.
Several unmarked shacks can be found along the northeastern shoreline, guarded by mirelurks and raiders. The lake bed is littered with trash, including some radioactive barrels and an industrial chest in the north (almost due east of the Roadside Pines Motel). Lake Cochituate's southern shore hugs the outskirts of the Glowing Sea and provides the shortest route to the federal supply cache 84NE to the southwest.
- Robot parts model - In one of the shacks near the northeast end of the lake.
- Power armor frame holding some leveled power armor parts - At an unmarked military checkpoint along the road due south of the Natick Police Department.
Lake Cochituate appears only in Fallout 4.
- Fallout 4 Vault Dweller's Survival Guide Collector's Edition p.355: "[5.05] LAKE CHOCHITUTATE
This was once a great fishing and recreation spot, until the contamination from the nearby disposal site shut down these activities. Now the lake stretches from the elevated freeway and Poseidon Reservoir area south by Natick to the devastated Mass Fusion Disposal Site to the south."
(Fallout 4 Vault Dweller's Survival Guide Map)