What does that mean? In case of a Lake (at least natural) there is a flow channel to a river or a Nullah when the lake overflows. Similarly a river, unless dammed will freely flow and if dammed, there will be controlled water release from it.
Does it not surprise us that despite no rain in Kashmir valley for last few days post the downpour, water has not drained out (and thus receded) from the streets of Srinagar to rivers and lakes? The reason is simple. We take nature for granted; We construct houses, other buildings and structures indiscriminately without any regard to natural flow paths of water in case of rain. Since it rains heavily very rarely, we take it for granted that natural drainage of water is a need that will NEVER arise.
This phenomenon is further aided by the unchecked illegal construction not only in the flow / drainage path but even in the river / lake bed. We choke the natural gradients of water flows. After allowing the mankind enough time to reconcile and correct the situation the Mother Nature strikes back. Even in such times if natural water drainage is free of obstructions, the accumulate water will drain out very fast as soon as heavy rain stops.
But since we took Mother Nature granted for many years, when her fury lands on us, we are left with cities like Srinagar becoming lakes by themselves with a very poor drainage rate. Where will the rain water drain? It is us who has dammed the water in our cities by killing natural routes of drainage.
The story repeats itself from Mumbai (a few years back), Uttarakhand and now in Kashmir valley. It is unfortunate that the people suffering in such times are mostly non contributors to these causes, tourists etc.
The moot question is, will we ever learn? Our record so far shows that we are dim and duffer students.