THE SILT CARRIED BY A RIVER IS THE RESULT OF EROSION BY WATER ON THE SOIL IN THE CATCHMENT AREA OF THE RIVER

The silt carried by a river is definitely a result of erosion by water on the soil in the catchment area of the river The proportion of silt to water and the size of the silt particles carried depends upon the nature of the surface soil, its slope and too the rainfall in the catchment area. Silt carrying capacity of the water in the river too depends on its discharge, surface slope, grade of silt and the silt charge. As for as case of the water in the main canal carries silt with a high silt factor which is gradually reduced in branch canals and minors, however in the case of rivers it totally depends upon the natural flow and based on the natural slopes. There are two classes of silts, as such considerable variations are noticed in the silt charge and silt grade which are carried daily by the water and the silt during summer is muddy and it becomes fine and course sand in winter. The silt charge by weight is maximum in rainy season when the parent river is in floods. As for as the  silt in the lakes is concerned it is placed by the floods in the beds, depending upon the nature of slopes and sides, affecting the storage capacity, where it is necessary to follow the silt problem, and the exact quantity and grade of silt that a particular channel should carry, and depends upon various factors, is a vexing problem for the engineer . It is therefore necessary to follow basic concepts of the required remedies for this problem and improve the storage capacity of lakes like GovindSagar, where maximum silt entering through floods during heavy rains is a fact and could be verified on the outlets growth of the necessitated frequent cuttings of the sides making slopes and the silt-up :-- Er Fateh Chand Guleria, Director RTI welfare Association registered number, HPCD, 3552 , Bilaspur Himachal Pradesh phone number 9459334377