trajectorytranqual flowtransaction flowtransienttransient conditionstransient periodtransient statetransistiontransitional flowtransitional watertranslatory flowtranslatory wavetransmissivitytransmissivity coefficienttranspirationtranspiration ratiotransplantingtransport capacitytransport competencetransport concentrationtransportabilitytransportation velocitytransporting erosive velocitytransversetransverse ridgetrapezoidtrapezoidal measuring weirtrashtrash gatetrash racktrash screentravel timetraveling screentraveling wavetraventinetravertintree grointree retardtrellis drainage paeerntremie pipetrenchtrench mucktrendtrend testtriangular measuring weirtriangulated irregular networktributarytrichloroethylenetrickle irrigation = drip irrigationtridiagonal