Moisture Pump - not draining water

[swampslug]

Of those 6 types, only WaterOceanShallow and WaterShallow have the <driesTo> tags. I haven't tested it but a patch to remove the node from WaterOceanShallow should prevent you from draining the ocean and adding it to WaterMovingShallow should enable the draining of river shallows.

Personally I prefer the use of bridge mods to build over water as draining a river/ocean without additional engineering to block off the area to be drained is unrealistic.