Studies on runoff coefficient of rational formula. Indian Journal of Soil Conservation 30 (1), 106e108.Adhikary R N; Rao M S Rama Mohan; Selvi V; Math SK; Husenappa V; Chandrappa M; Reddy K K. 2002. Studies on runoff coefficient of rational formula. Indian Journal of Soil Conservation...
3.4.1. Elasticity coefficient method based on Budyko hypothesis Calculate the influencing factors of runoff change on an annual scale by the Choudhury-Yang formula (Formula 10). The idea is to calculate the elasticity coefficients of the corresponding influencing factors and then use them to calculat...
where Qp is the peak discharge (m3/s for 1 cm of rainfall excess); A is the catchment area (km2); and Cp is the coefficient varying from 0.3 to 0.93, depending upon the retention and storage characteristics of the catchment. The peak discharge per unit area is given by (4.120)qp=QpA...
This study deals with the examination of the accuracy of runoff and the rationality of hydrological phenomena in cases where the coefficient of evapotranspiration was made constant throughout the year and where it was changed every month. The HAMON formula were used for the potential evapotranspiration...
The goodness of fit is estimated using the coefficient of determination R2. In particular, the explanatory power of ASM across all the classes of TIA R2 (RR, ASM) is computed as (2)where MRRi,j is the element (i, j) of matrix MRR (Equation 1), are estimations from the regression...
50 sigma layers were distributed to represent both the bottom and the surface boundary layers. The atmospheric forcings were computed thanks to the bulk formulae following Luyten and De Mulder [94], and the wind drag coefficient was computed following Charnock's relation [95]. These formulae ...
Overland flow is described using Manning’s Formula, which, for the case of overland flow in a catchment, can be written as:(1)Q=1nS12d53Wwhere n is Manning’s coefficient (which depends on the roughness of the surface, including vegetation), S is the slope of the surface, d is ...
After the 1970s, runoff and sediment sharply decreased, mainly due to the impacts of the underlying surface, while precipitation and evapotranspiration had little influence [17]. By using elasticity coefficient method, Jin and Li calculated the contribution of underlying surfaces, such as check dams...
Calibration was conducted based on the Nash–Sutcliffe coefficient, but peak and volume performances were also studied. The results show that it is possible to link runoff hydrographs computed with the PP model to those created with the CN method, although that relation is not useful for the ...
In addition, the multi-year average runoff sensitivity coefficient to potential evaporation was −0.069 and the range of the sensitivity coefficient was −0.100 to −0.049. The result conveyed that the runoff depth decreased by an average of 0.069 mm when the potential evaporation increased by...