In the early hours of 10 August, after days of rapid filling, Tarbela touched its maximum conservation level of 5.58 million acre-feet. Mangla, on the Jhelum, sits marginally above last year and close to its five-year average, though still below its ten-year norm. Even Chashma is near-full, just half a foot below its maximum level. Taken together, Tarbela and Chashma compensate for Mangla's relative shortfall to keep the combined total broadly in line with the ten-year norm. For water managers, this is the desired state heading into late monsoon. For everyone else, full dams change the nature of the game. When a reservoir is filling, the risk is shortage. When it is full, the risk shifts. Every additional drop from the mountains must now be handled in real time, released through power tunnels, passed through spillways, or pushed into canals. The storage cushion is gone. What remains is operational nerve. The monsoon that cannot decide

Pakistan's 2026 monsoon has been a study in contradictions. Kashmir has delivered. The Jhelum at Mangla is running 24 per cent above its five-year average. But the Indus mainstem at Tarbela has trailed its recent norm by 6 per cent, and the Kabul at Nowshera has fallen 22 per cent below. The mountains are not speaking with one voice, and the plains have stayed largely dry. The Pakistan Meteorological Department's August outlook projects below-normal rainfall over most of the country, with above-normal temperatures. Yet it warns of intense monsoon spells in the north that could send sudden surges down the Indus, alongside elevated risks of glacial lake outburst floods and landslides. An earlier National Disaster Management Authority seasonal outlook projected 22 to 26 per cent more rain than last year, a gain against a deficit season, but still below the PMD's long-term baseline. If that additional rain materialises mainly in the upper catchments, it will arrive at Tarbela and Mangla with little warning and little room.

The numbers reflect the divide. The Jhelum's inflows at Mangla have run well above the five-year average, allowing managers to hold water. The Indus at Tarbela and the Kabul at Nowshera have trailed their recent norms. Total inflows are better than last year, but last year was itself a deficit season, so clearing that bar is no comfort. Inflows remain short of the five-year average. This is not a robust, system-wide monsoon. It is a selective one. The response is telling. They have cut Mangla outflows to a trickle, just 7,000 cusecs. They have throttled the........

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