Factors Affecting Effective Rainfall
1. Rainfall characteristics:-
i) High intensity of rainfall – less effective rainfall
ii) More duration of rainfall – less effective rainfall
iii) Well distributed rainfall – more effective rainfall
iv) With light showers.
2. Land characteristics:-
i) Leveled land – more effective rainfall
ii) Sloppy land – less effective rainfall more runoff
iii) Ploughed land – More effective rainfall
iv) Vegetative cover – Less runoff, more effective rainfall.
3. Soil characteristics:-
i) Infiltration rate – high infiltration rate – more effective rainfall
ii) Storage capacity – More storage capacity – more effective rainfall
(Depth of soil)
iii) Initial water content – high initial water content then less will be the effective rainfall
4. Crop characteristics:-
More roof zone depth complete ground cover Active stage of growth – More uptake of water more will be effective rainfall.
More radition High temperature and Low temperature Relative humidity – High crop requirement and more effective rainfall
6. Vegetative cover:-
Surface condition of soil canopy soil cover natures of roots mulches etc. affects the effectiveness of rainfall.