The writer is an architect. WHENEVER Karachi floods, the government announces the widening of its nullahs that carry the floodwater to the sea. The decision of the extent of widening is taken in an ad hoc manner. As a result of recent decisions, 5,916 houses along Gujjar nullah, 1,049 along Mehmoodabad nullah, and 992 along Manzoor Colony nullah are to be demolished apart from commercial units. The affectees are not being allocated land or funds for rehabilitating themselves and are becoming homeless, having been declared encroachers by the judiciary in Pakistan. Affected communities argue that their encroachments are just one of the reasons why Karachi floods. Other reasons are that the nullahs are choked and as such cannot function to capacity, inevitably flooding the areas through which they pass. Communities also claim they have paid corrupt government officials for the land they sit on and in addition paid billions of rupees for legal electricity, gas and municipal connections and taxes over the last 50 years. Non-government planners are also of the view that another reason for flooding is that three of the major outfalls to the sea at Gizri Creek in Defence Society, Chinna Creek backwaters around Mai Kolachi, and the Kalri nullah at Machhar Colony are blocked and even if the nullahs are widened flooding will still take place.