When you are talking about aquifers, water movement in a karst region is entirely different than in a non-carbonate bedrock region. In a karst region, water tends to move in conduits through the limestone (almost like pipes, where the carbonate weathers out). These conduits often dissolve along original bedding planes or fracture structures. In non-carbonate bedrock, water in an aquifer moves either along fractures, or slowly through pore space in the rock.
Development in a karst region can: draw the overall water table down, and rearrange the piping (so to speak), which either diverts, reduces, or in rare cases vastly increases the local surface flows.
Quarry operations, as they mine downward, or laterally, may intersect the underground piping and divert flow that was originally into a stream eventually into the bottom of the quarry. This often gets pumped out, but if it is returned to the stream well below where it originally entered, whatever in between can dry up. Blasting can loosen up the clay in clogged conduits and divert flow within the general area of the blast as well.
