At time, the time of excess precipitation in case of a unit hydrograph, keeping the unit precipitation the same, is required to be changed depending upon the storm period t. This time of excess precipitation may be increased or decreased. Suppose the unit hydrograph of 1 h-1 cm precipitation is available as follows: A 2 […]
Changing of Time of Unit Precipitation | Water | Irrigation | Agriculture
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Unit Hydrograph and S Hydrograph | Water | Irrigation | Agriculture
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In this article we will discuss about:- 1. Definition of Unit Hydrograph 2. Definitions involved in Unit Hydrograph Theory 3. Specifications of Unit Hydrograph 4. Assumptions made in the Unit Hydrograph Theory 5. Use of Unit Hydrograph to Derive Flood Hydrograph 6. S Hydrograph 7. Limitations of Unit Hydrograph Theory 8. Derivation of Unit Hydrograph […]
Estimation of Crop Evapotranspiration: 2 Methods | Irrigation | Agriculture
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The following points highlight the top two methods used for the estimation of crop evapotranspiration. The methods are: 1. Experimental Method 2. Theoretical Methods. 1. Experimental Methods: Estimation of ETo can be made using the formula: ETo = Kpan × Epan Where ETo is the reference crop evapotranspiration in mm/day, Kpan is a coefficient called […]