On the Dam Battlegrounds map in ARC Raiders, the Matriarch now spawns on the south‑west side of the map, in the dry desert area by the water towers and the Electrical Substation.

Current spawn details

  • General area: South‑west edge of Dam Battlegrounds, often described as the “desert area south” of the main dam structures.
  • Landmarks to look for:
    • The group of water towers on the western edge.
* The nearby Electrical Substation complex next to those towers.

* A small enclosed building closer to the water treatment elevator, north‑east of the substation.
  • Boss position: The Matriarch sits in the open ground (a wide, mostly flat basin) around these structures and activates as soon as it detects movement or incoming fire.

Extra context

  • The Matriarch is part of a dynamic event and only exists on Dam Battlegrounds when that event is active.
  • It used to appear around “The Breach” near the center of the map, but the event was moved to this more exposed south‑west basin to make the fight less abusable from high ground.

TL;DR: Load into Dam Battlegrounds, head to the south‑west desert section, find the cluster of water towers and the Electrical Substation, and you’ll be in the current Matriarch spawn zone.

Information gathered from public forums or data available on the internet and portrayed here.