Establish an Adaptation Coordination Mechanism (ACM) — a nested governance architecture that coordinates climate adaptation decisions across water, agriculture, energy, and infrastructure sectors, and across subnational, national, and regional levels.

Core components: (1) River Basin Adaptation Plans: For 40 shared river basins, develop 20-year integrated water allocation plans that optimize jointly for upstream irrigation, downstream power generation, flood buffering, and navigation — using real-time hydrological modeling to allocate water dynamically as climate conditions shift.

(2) Sectoral Interdependency Mapping: Identify critical linkages (energy uses X% of irrigation water; agriculture accounts for Y% of groundwater depletion) and embed these into project appraisal — so adaptation in one sector triggers evaluation of impacts in others. , irrigation efficiency projects that reduce consumption vs. water transfer schemes that divert flows.

(4) Early Warning + Adjustment Protocol: Real-time satellite monitoring of hydrological, agricultural, and coastal conditions with binding protocols that trigger regional adjustment when one actor's adaptation threatens to create maladaptation elsewhere.