# Ground Zero Freshwater Source

The Ground Zero map now has a first-pass gameplay freshwater source.

## Placement

- Actor label: `AGR_GZ_FreshWaterSource_01`
- Blueprint: `/Game/Agrarian/Blueprints/World/BP_FreshWaterSource`
- Placement intent: drainage-candidate area identified during the landform pass.

The previous water/shoreline analysis found no ocean, lake, or confirmed stream
inside the current 1 km tile. This actor is therefore a gameplay MVP freshwater
source, not a confirmed hydrography feature.

## Gameplay

The water source is an interactable actor. On server-authoritative interaction,
it restores thirst through `UAgrarianSurvivalComponent::AddWater`.

- Restore amount: `45`
- Interaction text: `Drink from Fresh Water Spring`
- Player path: focus the source, use the shared interact input, and let
  `AAgrarianGameCharacter::ServerInteract` validate range before calling the
  water source interaction.
- Automation: `Scripts/verify_ground_zero_water_source.py` validates placement
  and restore amount, while `Scripts/verify_water_gathering_interaction.py`
  verifies the native interaction path and documentation remain wired.

## Follow-Up

Later hydrography work should validate this drainage candidate against USGS NHD
or equivalent data. If a confirmed stream or spring is available, replace this
placeholder with the real watercourse location and geometry.
