Classification of reservoirs
RESERVOIRS

Classification of reservoirs

CLASSIFICATION OF RESERVOIRS Depending upon the purposes served, the reservoirs may be classified into following categories. Storage or conservation reservoirs Flood control reservoirs Distribution reservoirs Multipurpose reservoirs. 1. Storage or Conservation Reservoirs. These reservoirs are primarily used to maintain minimum supplies of water for irrigation, hydroelectric generation, domestic and industrial water supply schemes, etc. during lean months of discharge in the rivers. We know that discharge in the rivers remains changing day to day, and season to season. During high floods the excess water in the river goes waste while in dry months it may not be sufficient to meet the minimum needs. The storage reservoir is constructed to store the excess water of floods and released gradually as and when required. 2. Flood Control Reservoirs. This reservoir is also called flood mitigation reservoir. The main purpose of this reservoir is to temporarily store the flood water and release slowly…

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Harmful salts in soils
Harmful Salts In Soils

Harmful salts in soils

Learn: Harmful Salts In Soils,effect of pH Value HARMFUL SALTS IN SOILS If the amount of harmful salts becomes excessive in the soil no crop can be grown over it. Sodium carbonate, sodium chloride, sodium sulfate, etc. are some of the harmful salts. But of these, sodium carbonate which is also known as white salt is considered to be the most harmful. If the percentage of harmful salts reaches 0.15 percent it affects the production and if this percentage reaches 0.25 percent it renders the land completely barren. Other salts are also present in the soil but unless their percentage crosses the limit they do not affect the growth of the crops. EFFECT OF pH VALUE The pH value of the soil suitable for crops should lie between 6.0 and 8.5. If pH value exceeds 10.5 the land becomes completely unsuitable for crops.  

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