First at all, congratulations for your work !
However, today I need to report a bug. Indeed my workers don't want to build a water pump at one specific place. I can't attached pic, so I'll explain to you :
When the entrance to the small warehouse and the water pump entrance are face to face, and the pump touches the water, my beavers refuse to build the water pump.
They can build all around but not at this place, whereas it was possible on previous saves...
I did a little capture of the game if you want to see the non-action by yourself : https://youtu.be/KeGFcsOXf