incised rillsincised riverincision rillincreasig channel dimensionincreasig equalization timeindex hydrographindex of aridityindices of soil productivityindirect discharge measurementindoor climateindriect bank protectioninduced rechargeindurated soilindustrial meteorologyinequalityinertiainertial forceinferaredinferiour oolitinfilteration coefficientinfiltrateinfiltrationinfiltration capacityinfiltration excess overland flowinfiltration fluxinfiltration overland flowinfiltration rateinfiltration volumeinfiltration waterinfiltrometerinfiniteinfinite time captureinflowinflow hydrographinfluent streaminflunent weiringrown meanderinitial abstractioninitial conditionsinitial depthinitial detentioninitial raininitial stageinitial velocityinlandinletinlet drop spillwayinlet lossinlet loss coefficientinlet transition