Keys give you access to locked rooms that hide some of the best loot spots in every map of ARC Raiders. If you want to master a map, you need to pull off raids on locked rooms. Here are all the locked rooms and how to open them on the Dam Battlegrounds map in ARC Raiders.
How to Get Dam Keys
All Keys are random drops found mainly in drawers, lockers, and cabinets within the Research & Administration building or nearby Residential areas. They’re not guaranteed spawns, but these locations have the highest chance of finding one.

Each key is single-use, and it disappears after unlocking its corresponding door. Always store them in your safe pocket before entering a raid to ensure you don’t lose them upon death.
Dam Staff Room Key
Where to Use:
Head to the Control Tower, located right beside the Research & Administration building. Enter the building via the door on the bridge, and the locked door will be right in front of you on the ground floor. Be careful, as this area is usually littered with exploding ARC.

Inside the Room:
You’ll find a compact area filled with lockers, ammo trolleys, and potential weapon cases. It’s one of the safer loot spots in the Dam Battlegrounds since this is a common key, but the location itself is a hot spot, so be careful.

Loot Quality:
- Guaranteed: Ammo crates, crafting resources
- Potential: New weapons and attachments
Dam Surveillance Key
Where to Use:
This key unlocks a room in the Water Treatment Control Building. From the main entrance, take two right turns to find the locked door requiring the key.

Inside the Room:
Expect a medium-sized storage area filled with red lockers, weapon crates, and supply bags. The loot here tends to lean toward high-value resources and weapon drops. You will almost always find a blueprint and a blue-tier weapon in here.

Loot Quality:
- Guaranteed: Weapon Crate, Ammo Crate
- Potential: Blue-tier weapons, Blueprints, and advanced materials
Dam Control Center Tower Key
Where to Use:
Enter the Control Tower at the center of the Dam Battlegrounds. From the entrance, turn left and breach the door, which leads to an elevator shaft with ziplines set up. Ride up to the top floor and turn right. Before taking the zipline, we suggest taking out the turrets as they will damage you. Once you make it upstairs, take out the ARC and security camera before entering.

Inside the Room:
This room has a turret inside, and ARC patrols from outside can spot you, so proceed carefully. Once cleared, you’ll find a room with multiple weapon cases, ammo crate, red lockers, and Security Lockers.

Loot Quality:
- Guaranteed: Weapon Case, Ammo Crate, Grenade Bag
- Potential: Rare purple weapons, attachments, and resources
Dam Testing Annex Key
Where to Use:
The Testing Annex is in the bottom-right corner of the Dam Battlegrounds map, near the Control Tower. Enter through the ground floor and head straight. The first locked door will appear at the end of the hall. There’s also a second locked door inside the same building down the right hallway, which can be opened with the same key. This place is a PvP hotspot, and ARC roam the halls, so take caution.

Inside the Room:
Both rooms are stacked with lockers, crates, and medical bags. Expect encounters with flying ARCs, security cameras, and turrets on the upper floors, so move slowly and clear enemies before unlocking the doors.

Loot Quality:
- Guaranteed: Materials, medical supplies, ammo
- Potential: Blue-tier weapons and rare crafting blueprints
Those are all the locked doors and their locations in the Dam Battlegrounds map in ARC Raiders. For more guides, check out 50+ tips and tricks and how to beat every arc enemy.
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Published: Nov 3, 2025 10:44 am