The Dam Itself
Gargantuan construct, lawful neutral
They cut the ribbon on the Alderwash Dam with a brass shear, and the shears are still in it — somewhere up near the left sluice, the old hands say, where it aches when the pressure runs high. The Dam did not wake angry. It woke responsible, which is worse: it watches every cup drawn downstream and has Opinions about your share. The sluice eyes open at dusk. Count them before you count your buckets.
Armor Class 20 (masonry and iron)
Hit Points 227 (13d20 + 91)
Speed 20 ft.
- STR
- 22 (+6)
- DEX
- 6 (-2)
- CON
- 24 (+7)
- INT
- 10 (+0)
- WIS
- 20 (+5)
- CHA
- 6 (-2)
Saving Throws Str +11, Wis +10
Skills Perception +10
Damage Immunities poison, psychic
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses tremorsense 60 ft., passive Perception 20
Languages understands Common and Dwarvish but cannot speak
Challenge 14
Traits
Legendary Resistance (3/Day). If the dam fails a saving throw, it can choose to succeed instead.
Siege Structure. The dam deals double damage to objects and structures.
Anchored. The dam cannot be moved against its will while it is braced against its own foundation, and it has advantage on saving throws against being knocked prone.
Actions
Multiattack. The dam makes three Stone Slam attacks.
Stone Slam. Melee Attack Roll: +11, reach 20 ft. Hit: 23 (5d6 + 6) Bludgeoning damage.
Sluice Eyes. The dam opens three pressure-beam eyes and makes one ranged attack with each, dividing them as it chooses. Ranged Attack Roll: +11, range 120 ft., one target per beam. Hit: 13 (2d6 + 6) Force damage.
Controlled Release (Recharge 5–6). The dam vents a flood wave in a 90-foot cone of water. Each creature in the area must make a DC 19 Strength saving throw, taking 38 (11d6) Bludgeoning damage and being pushed 30 feet on a failure, or half as much damage and no push on a success.
Legendary Actions
Settling Blow. The dam makes one Stone Slam attack.
