40. Grafton Dam
- COLLECTIBLES: Bobblehead, Holotape, Magazine, Power Armor
- CRAFTING: Cooking, Power Armor, Tinker, Weapons
- DANGER: Long Drop! Radiation! Tension Trigger!
- ITEMS: Arms and Ammo; Harvestable: Mirelurk Egg, Mutated Fern; Health and Chems; Recipe/Mod/Plan; Trunk
- INFO: Expected Enemy: Irradiated Insect, Mirelurk, Super Mutant; Note; Quest: Pass the Buck; Scavenge Rating: 3; Size: 3; Sleeping; Threat Level: 1–10
- LOCK: Door (3, 3, 3)
- ITEM EXAMPLES: Abraxo Cleaner, Burgundy Bottle, Camera, Can, Connecting Rod, Coolant, Enamel Bucket, Gas Canister, Fusion Core, Hallucigen Gas Canister, Glass Jar, Mini Nuke, Orange Canister, Pack of Cigarettes, Salt, Spices, Steel Worker Hat, Torque Rod End, Toy Rocketship, Volatile Materials Box, Waste Acid.
Route 92 to the north of Morgantown crosses the remains of Grafton Dam, on the border between The Forest and Toxic Valley. The irradiated waters of Grafton Lake are being held back by the intact dam wall. The actual dam structure is much more dilapidated and usually overrun by Super Mutants, though this was once a Brotherhood of Steel compound.
Getting into the dam building may be tricky, as the three exterior doors are all locked tight (3). Drop off the northeast exterior balcony onto the large outflow pipe with the skeletal corpse hanging from it. Sneak inside this way. Once inside, head to the ground-level gantry and up two more floors (watching for traps and foes); head to a series of blue metal maintenance huts on the gantry.