... Why are you walling that off in the first place ... >_>
For the next overseer:
Someone needs to do wound dressing and suturing now. The Mad Fool is a bit rusty but he can probably handle it... except that he never seems to do any of his other jobs except diagnosis.
There's also dwarf walled in beside the BATTERY.
My aqueduct is still flowing. If there are FPS issues, the lever to stop it is at hotkey F6 (the only active lever)
Lower Deathgate has only 2 wells left, with 7x9 water each, the remainder of the water channels having dried out completely. This... may be sufficient for 2 years. I don't know. Not like the severely wounded are recovering anyway.
HOWEVER, if successfully activated in its current state, and the water miraculously manages to reach lower deathgate (unlikely) it will flood, since the pressure lock has been bypassed:
Of course, in its current state the water won't ever reach that far, and if Operation Red Shield is activated without building any new walls to prevent it, the remaining trickle of water from the aquifer will be obsidianized.
This might actually be a good thing, if the overseer desires to active both Red Shield and Thirst-Quencher, as the aquifer can then be tapped at a different point, and a larger volume of water brought into the aqueduct.
Oh, and the front gate is still open. Probably not a good idea.
As far as Operation Red Shield, the BATTERY needs semi-frequent pumping to function (it is currently not powered by the wheels, and I don't see an easy way of transmitting that power, except maybe some floors and gears just north of the pump), so should not be walled off. It'd be better to wall off the upper fort on level 124, in the southern passage.
This gives the Lower fort access to the axles and the BATTERY while preventing the magma from destroying them.