hydrodynamichydrodynamic dispersionhydrodynamic forcehydrodynamic instabilityhydrogenhydrogenic soilshydrogeologic maphydrogeologyhydrographhydrographichydrographyhydrologic budgethydrologic cyclehydrologic distancehydrologic methodhydrologic stormhydrological cyclehydrological modeling extensionhydrological responsehydrological soil groupshydrologyhydromechanichydrometerhydrometryhydromodellinghydrophobic soilhydrophytehydrospherehydrostatic headhydrostatic law pressure distributionhydrostatic levelhydrostatic pressurehydrotasimeterhydrotaxishydrothermalhydrotropichydrotropismhydroushyetal regionshyetographhyetologyhygrographhygrometerhygrometryhygrophytehygroscopehygroscophic coefficienthygroscopichygroscopic nucleihygroscopicity