I remember back when BG1 was out, that I pulled the plug at the mines without telling Rill to evacuate, leading to the mines beng flooded and everyone dying (besides the miner at the plug). I also remember it costing reputation and that for some reason this led to the bridge to Baldur's Gate never being let down, basically ending the game right there.
I am not sure though whether this was me missing something back then or whether you actually do have to tell Rill to evacuate.
If anyone knows for sure, please do let me know
