Pakistan has minimal water storage capacity compared to Indian dams that can save a maximum of 220 days of water, and the U.S. or Australian Dam can save quite 900 Days of storage capacity.
One cannot possibly stop a glacier collapse, but what can be done is ensuring the placement of an early alert system to minimize any damage to human lives.
Water is a precious life-giving commodity; it becomes scarce because it is never treated as worthy as gold, oil, gas, or other natural resources of industrial importance.