A Text Book of Hydrology

air mass annual rainfall annual runoff atmospheric pressure baseflow called catchment channel cm/h computed confined aquifer correlation corresponding cumec-days cumulative cyclones denoted density depth of rainfall design flood determined direct runoff hydrograph distribution drainage basin effective rainfall equation estimated evaporation evapotranspiration Example factors frequency analysis gauge given graph groundwater hydraulic hydraulic conductivity hydrologic cycle hyetograph infiltration capacity infiltrometer inflow interval isohyets km² km³ known latitude m³/s mass curve maximum mean measured method mm/h moisture observed obtained ordinates outflow hydrograph parameters peak discharge plotted precipitation Q₁ radiation rain rainfall rainfall intensity raingauge random variable recorded regression reservoir return period river routing runoff volume S-curve sample saturation vapour pressure sediment shown in Fig slope soil Solution standard deviation station storage storm stream streamflow surface runoff temperature unit hydrograph velocity vertical water surface water table wind yield zone