Silting and Desilting of ReservoirsThe creation of river dams and the storage of water have been a strategy for survival for many centuries. Reservoirs have diverse functions, providing irrigation, water supply, storage of water, flood control, navigation and power generation. The silting of a reservoir is an unavoidable process. Although it cannot be halted, silting can be slowed down and controlled by a variety of soil conservation practices and by modifying agricultural practices in the catchment area. Other methods of reducing silting include the placing of certain engineering structures in the river system and the introduction of adequate strategies of reservoir operation. Silting and Desilting of Reservoirs includes aspects such as hydraulics, sediment transport, silting, sediment distribution, calculation and prediction of silting and solutions to reservoir silting. |
Contents
GENERAL CONSIDERATIONS ABOUT RESERVOIRS | 11 |
Hydraulics of reservoirs | 20 |
SEDIMENT TRANSPORT IN RESERVOIRS 62 222 | 62 |
SILTING OF RESERVOIRS PROCESS CAUSES AND EFFECTS | 63 |
SEDIMENT DISTRIBUTION IN RESERVOIRS CALCULATION | 151 |
COPING AND DEALING WITH SILTING AND DESILTING | 209 |
CONTROL OF RESERVOIR SILTING PRACTICES MEASURES | 217 |
DESILTING OF RESERVOIRS SEDIMENT REMOVAL | 246 |
Silting of reservoirs in the world | 299 |
319 | |
335 | |
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Common terms and phrases
Arges River average Batuca bed-load calculated catchment coefficient continuity equation dam wall delta deposited sediment desilting developed diameter downstream drawdown dredging elevation entrainment equation erosion ervoir eutrophication field data flow velocity flushing operations HR Wallingford hydraulic hydraulic head incoming sediment initial capacity intakes kg/m³ km² km³ Lake Mead m³/s main river method million m³ Mures River number of reservoirs numerical model Olt River original river bed Palagnedra pipeline Prundu Qedusizi ratio regime reser reservoir basin Reservoir in China reservoir silting reservoir water reservoirs in South river system river-reservoir system Romania Rooseboom runoff sand Sanmenxia sedi sediment concentration sediment deposits sediment distribution sediment particles sediment transport sediment volume sediment yield shown in Figure silting process silting rate simulating slope sluicing South Africa specific weight storage capacity stream power surface syphoning tion topset trap efficiency turbidity currents upstream voir volume of sediment water level Welbedacht width дх