Urban Flooding, Encroachments, and Floodplain Development
You are the director of the Provincial Disaster Management Authority (PDMA) in a city of 3.5 million people. The monsoon forecast is 30% above normal, and the city's stormwater drainage system is already overwhelmed. Satellite imagery shows that 40% of the main stormwater drains are encroached upon by informal settlements and commercial buildings. About 12,000 households live on these encroachments. A new private housing scheme has been approved on a floodplain that historically absorbed 25% of the city's runoff. The provincial cabinet wants a plan within 10 days. Options include: (a) immediate eviction of all encroachments before the monsoon; (b) selective removal of structures blocking the most critical drains, with compensation and relocation; (c) no eviction but emergency pumping and early warning. The city has PKR 800 million for emergency works and a limited relocation budget of PKR 200 million. Community leaders warn of resistance; developers have political connections.
1. Evaluate the three options using geographic and disaster-risk reasoning.
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Option (a) is logistically impossible before the monsoon and socially explosive. Evicting 12,000 households in weeks would require shelter, compensation, and security that the PKR 200 million relocation budget cannot cover. It would also punish many households while leaving politically connected commercial encroachments untouched. Option (c) is necessary but insufficient: emergency pumping and early warning can save lives, but they do not remove the bottleneck in the drainage system and may simply shift floodwater to poorer neighbourhoods. Option (b) is the strongest because it targets the drains that cause the greatest flood impact. Use GIS overlay analysis to rank drains by catchment area, population exposed, and historical flood depth. Remove only structures blocking the highest-priority drains, starting with those where a small removal yields a large reduction in flood risk. Pair removal with relocation and compensation for affected households. Also impose an immediate stop-work order on the floodplain housing scheme, because losing 25% of natural runoff absorption will worsen flooding for the entire city. The recommendation should be selective removal plus emergency works plus enforcement against the floodplain development.
2. Recommend a phased plan with clear prioritization criteria and a budget outline.
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Phase one, before the monsoon: use PKR 300 million for emergency desilting and pumping at the 10 most critical drain junctions, identified by GIS risk mapping. Use PKR 150 million for selective removal of structures blocking those drains, with compensation at verified market rates. Phase two, during the monsoon: activate early-warning SMS to flood-prone union councils, open 20 relief camps, and pre-position boats and pumps. Phase three, after the monsoon: relocate affected households with a transparent lottery and compensation package, and complete an ecological review of the floodplain scheme. Prioritization criteria: number of people protected per rupee spent, depth of historical flooding, presence of vulnerable populations, and feasibility of removal within the timeline. Do not spread the budget evenly across all drains; concentrate on bottleneck sites. Keep a PKR 100 million contingency reserve. The relocation budget of PKR 200 million is insufficient for all 12,000 households, so phase relocation and prioritize households on the most critical drains. This plan is honest about limits while reducing the highest risks.
3. How would you address equity, compensation, and political pressure from developers?
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Equity requires that the poor are not the only ones moved while commercial and politically connected encroachments remain. Publish the GIS priority list and apply the same removal criteria to informal settlements and commercial buildings. Compensation should be based on verified structures and household size, not political connections. Use a public grievance redress mechanism with union council representatives and a published appeals timeline. For the floodplain housing scheme, issue a stop-work notice and refer the approval to the provincial ombudsman or planning tribunal. Document the developer's political connections in the file but do not make personal allegations; focus on the hydrological evidence that the floodplain absorbed 25% of runoff. Brief the cabinet with a map showing who benefits and who bears the risk. Engage community leaders early and offer relocation sites with basic services. If developers resist, use the media to explain that floodplain construction shifts flood risk to low-income neighbourhoods. The political pressure is real, but a transparent, map-based process makes it harder to reverse the decision without public scrutiny.