ARC Raiders Dam Guide: Keys, Extracts & Access Zone

This ARC Raiders Dam guide is about Dam Battlegrounds, the first map you unlock and the one rated easiest. That makes it the place to learn properly: where the four Dam keys go, which of the eight exits you can reach from where you spawn, and what the Controlled Access Zone wants from you.

Updated 2026-10-14: rewritten against the ARC Raiders Wiki. The old version called the Dam a "former Raider stronghold," put it second after The Blue Gate, and described armor, zones and patrol routes the game does not have. The Dam comes first, The Blue Gate unlocks after 18 rounds, and the lore says the plant was a lifeline for settlers.

TL;DR: Dam Battlegrounds is a 30-minute map with no unlock requirement and the lowest difficulty rating, 2. It has four cargo elevators, four Raider Hatches, four keyed rooms, and the Controlled Access Zone, a puzzle vault that takes a squad and a Snap Hook.

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The map at a glance

The Alcantara Power Plant sits in "toxic, waterlogged lands." The wiki's lore entry says it was "a rare lifeline for settlers" before becoming a battleground in the First Wave, and that Raiders now treat its research buildings, dam structures and hydroponic domes as "a reliable source of valuable loot."

For comparison, Buried City unlocks after 8 rounds, Spaceport after 12 and The Blue Gate after 18. Our maps guide covers all of them.

Image: Dam Battlegrounds map by Cartotect, ARC Raiders Wiki (arcraiders.wiki). Game art is the property of Embark Studios.

Conditions change the difficulty

The Dam is only a 2 under normal conditions. The wiki rates each condition separately, and the hardest ones make it a 5.

The Queen and Matriarch only appear during special conditions, and patch 1.22.0 notes that Shredders show up on the Dam only under certain conditions too. If you are still learning the map, queue when the rotation shows Normal or Lush Blooms. Our Matriarch guide covers that fight when you are ready for it.

The four Dam keys

Each key opens one room, and the wiki lists all four as Scavenging and quest rewards.

Control Tower and Research & Administration sit next to each other in the middle of the map, so a run carrying both keys has a short route. The Testing Annex is in the south-east by Red Lakes Balcony, and Water Treatment Control is on the western edge of the swamp.

Every way out

The community map on the wiki marks eight exits.

Raider Hatches need a Raider Hatch Key, stay open for roughly 10 to 15 seconds, take one Raider at a time and have no shutdown timer, which makes them the exit for a late run. Two more details from the wiki's extraction page: downed Raiders can still use an extraction terminal, and a terminal used right before shutdown will not deactivate. The extractions guide covers the rest.

The Controlled Access Zone

Update 1.17.0 (Shrouded Sky, February 24) shipped a Dam Battlegrounds map update, and the wiki credits it with adding the Controlled Access Zone. It sits next to the Power Generation Complex in the north-east. It has three stages:

1. Power the lock room. Find a Fuel Cell (it often spawns on the ground floor), carry it to the top of the room and insert it into the wall receptacle. That unlocks the room with the fourth switch.
2. Press four switches together. All four have to go down at nearly the same time. Lights above the door turn green when it worked. The wiki says three people can do it, but only with a Snap Hook to reach the last button in time.
3. Feed the panel. A second door opens only after you deposit the items an electrical panel asks for, randomized each match.

The panel request is random, so it pays to carry a few small parts in. Solo, stage two is out of reach.

Screenshot: ARC Raiders Steam store page. Game art is the property of Embark Studios.

Step-by-step: a first proper Dam run

1. Check the condition. Normal, Lush Blooms or Uncovered Caches keep the map at difficulty 2.

2. Note your nearest two exits. One elevator and, if you carry a key, one hatch.

3. Spend a key if you have one. Control Tower and Research & Administration are side by side, so pair them.

4. Watch the timer. Most exits show a shutdown timer on the map; Raider Hatches have none, which is why the key matters on a long run.

5. Save the Controlled Access Zone for a squad. Three Raiders and a Snap Hook, plus spare small parts for the panel.

Our take

This is a research page built on the wiki's map data, not our own runs. The Dam's real advantage is that it forgives mistakes while you learn the systems every other map uses: keyed rooms, hatches and conditions. Learn its eight exits, then move on to Buried City once you have the eight rounds.

Frequently Asked Questions

Is the Dam the easiest map in ARC Raiders? Yes. Dam Battlegrounds is the first playable map, has no unlock requirement and carries the lowest difficulty rating, 2, on the wiki's map table. Buried City and Spaceport are rated 3, and The Blue Gate 4.

What do the Dam keys open? The Control Tower Key opens the top-floor room of the Control Tower, the Staff Room Key a first-floor door in Research & Administration, the Testing Annex Key one of two ground-floor doors in the Testing Annex, and the Surveillance Key a first-floor room on the south side of Water Treatment Control.

Where are the Raider Hatches on the Dam? The community map on the ARC Raiders Wiki marks four: Sunroof Hatch near Ben Welder's Sunroof, Pump House Hatch in the east, Spillway Hatch near Red Lakes Balcony, and Good Old Baron's Hatch near the Electrical Substation. Each needs a Raider Hatch Key.

How do you open the Controlled Access Zone? Insert a Fuel Cell to power the locked room, press all four switches at nearly the same time to open the first door, then deposit the randomized items the electrical panel asks for to open the second door.

Related Reading

• ARC Raiders Maps Guide: every map, unlock and condition.
• ARC Raiders Extractions Guide: elevators, hatches and timers.
• ARC Raiders Blue Gate Guide: the map rated 4.
• ARC Raiders Buried City Guide: the next unlock.
• ARC Raiders Matriarch Guide: the Dam's boss condition.
• ARC Raiders Loot Guide: what to keep from a key room.
• ARC Raiders Best Solo Loadouts: kits for running the Dam alone.
• ARC Raiders Enemy Types Guide: the ARC you will meet here.

References

• Dam Battlegrounds, ARC Raiders Wiki: condition difficulty and the Controlled Access Zone puzzle, accessed 2026-10-14.
• Maps, ARC Raiders Wiki: duration, unlock requirements and difficulty, accessed 2026-10-14.
• Alcantara Dam (lore), ARC Raiders Wiki, accessed 2026-10-14.
• Dam Battlegrounds map by Cartotect, ARC Raiders Wiki: exits and locations, accessed 2026-10-14.
• Dam Control Tower Key, Dam Staff Room Key, Dam Testing Annex Key, Dam Surveillance Key, ARC Raiders Wiki, accessed 2026-10-14.
• Raider Hatch and Extraction Points, ARC Raiders Wiki, accessed 2026-10-14.
• Shrouded Sky patch notes 1.17.0, ARC Raiders official site: Dam Battlegrounds map update, accessed 2026-10-14.
• Patch notes 1.22.0, ARC Raiders official site: Shredders on the Dam, accessed 2026-10-14.