Surface Drainage
Surface drainage is the shaping, grading, or management of the land surface to provide gradual removal or diversion of water off of the land surface. Surface drainage is accomplished by smoothing…
Impact Of Irrigation
Irrigation schemes alter the natural hydrological features of a location and lead to changes in the natural quality of soil and water in the region where it is applied. What…
Flood Management
Definition of Flood According to the India National Commission on Irrigation and Drainage (INCID), ‘Flood’ is defined as a relatively high flow or stage in a river, marked by higher…
Drought Management
Definition of Drought In simple terms, a drought is a period of unusually dry weather that persists long enough to cause environmental or economic problems, such as crop damage and…
Hydrologic Channel Routing
Introduction In channel routing the storage is a function of both outflow and inflow discharges and hence a different routing method is needed. The flow in a river during a…
Hydrologic Reservoir Routing
Definition and Types of Flood Routing Flood routing is the technique of determining the flood hydro graph at a section of a river by utilizing the data of flood flow…
Other Unit Hydrographs
Distribution Graph The distribution graph introduced by Bernard (1935) is a variation of the unit hydrograph. It is basically D-h unit hydro graph with ordinates showing the percentage of the…
Synthetic Unit Hydrograph
Definition and Uses of Synthetic Unit Hydrograph To develop unit hydro graphs to a catchment, detailed information about the rainfall and the resulting flood hydrograph are needed. However, such information…
Unit Hydrographs of Different Durations
Lack ofadequate data normally precludes development ofunit hydrographscovering a wide range ofdurations for a given catchment. Undersuch conditions aD hour unit hydrograph is used to develop unit hydrographs of differing…
