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The Pakistani rains vary considerably in terms of size, time of occurrence and air distribution. Almost two-thirds of the rains are concentrated in the three summer months of July and September. The average annual precipitation in the lower Indus plain falls below 100 mm below 750 mm near the Indo Superiore ski area.There are two main precipitations in Pakistan: monsoons and western unrest. In most channel managers, the relative contribution of the precipitate is low compared to the other two irrigation waters, ie sewage water and groundwater. More than 60% of Kharif’s seasonal precipitation is concentrated at almost all channel controls by mid-July.The monsoons come from the Bay of Bengal and usually reach Pakistan at the beginning of July, after having crossed India. Continue until September. The Indus plains receive most of the monsoon rainfall. Two storms in Pakistan: (1) from April to June (2) from October to November. These periods are the driest parts of the year, especially in October and November. During this period, thunderstorms caused by convection cause sporadic and localized precipitations.Pakistan is located in a dry and semi-dry climate zone. The entire Indus plain (sewage command areas) receive a 212 mm (95 ± 28% confidence interval) and 53 mm (95% confidence interval ± 8) in seasonal average of the precipitated kharif and Rabi season.Rain is changing as we move north and northeast to the south of the country. Only the North West Frontier Province (NWFP) and the Channel Headquarters province of Punjab to the north csatornaparancsai accept a significant amount of precipitate during the summer and winter season. The ditches of the canal above the bicycle stations (for example in the NWFP) receive almost 55% of the annual rainfall during the Kharif season. The channels of the upper and lower Indian plains during the Kharif season receive 75% and 85-90% of annual rainfall. The annual rain volatility increases as it moves south. The dominant area of ??the Guddu and Sukkur Barrages falls into an area with the highest variability.Based on the ten-year average (1990-1999), the annual precipitation of the Department of Meteorology in Pakistan in some large cities are as follows:

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