Cold Pulse

All water surfaces in a 30 feet radius centered on you freeze. Creatures within radius make Constitution saving throw, taking 2d4 cold damage, halved on a successful save. Damage is doubled if the creature is made entirely out of water (this damage ignores cold resistance).

Creatures located in a body of water who failed the save are stuck in the frozen water, have their speed reduced to 0, and can try to free themselves on the start of their turn making Strength check against your spell saving DC.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the range increases by 10 feet each slot level above 2nd.