Is it normal to thaw ground while filling ice rink?

Yes, it is normal for the ground beneath an ice rink to thaw, especially if the temperatures rise above freezing during the filling process. As water is added, it can absorb heat from the ground, causing some thawing. However, it's important to monitor the conditions to ensure the base remains stable and does not affect the integrity of the ice surface. Proper insulation and preparation can help minimize thawing issues.