Designation:D4410−16TerminologyforFluvialSediment1ThisstandardisissuedunderthefixeddesignationD4410;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetermsaretobeusedbypersonsinvolvedincollecting,reporting,andinterpretinginformationpertainingtosedimentationandhydrologicprocessesastheyapplyinthedevelopment,use,control,andconservationofwaterandlandresources.1.2SomelistedtermsanddefinitionsarefromotherASTMstandardsandthesourcedocumentisgiveninboldtypeattheendofthedefinition.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.2.ReferencedDocuments2.1ASTMStandards:2D5614TestMethodforOpenChannelFlowMeasurementofWaterwithBroad-CrestedWeirsD5640GuideforSelectionofWeirsandFlumesforOpen-ChannelFlowMeasurementofWaterD5674GuideforOperationofaGagingStationD6855TestMethodforDeterminationofTurbidityBelow5NTUinStaticModeD6698TestMethodforOn-LineMeasurementofTurbidityBelow5NTUinWaterD7937TestMethodforIn-situDeterminationofTurbidityAbove1TurbidityUnit(TU)inSurfaceWater3.Terminology3.1TermsandDefinitions:acceleratederosion,n—erosionatarategreaterthangeologicornaturalerosion.DISCUSSION—Acceleratederosionisusuallyassociatedwithanthro-pogenicactivitiesandusuallyreducesplantcoverandincreasesrunoff.accretion,n—aprocessofsedimentaccumulation.agglomerationorflocculation,n—thecoalescenceofdis-persedsuspendedmatterintolargeflocsorparticleswhichsettlerapidly.aggradation,n—thegeologicprocessbywhichstreambeds,floodplains,andthebottomsofotherwaterbodiesareraisedinelevationbythedepositionofmaterialerodedandtransportedbywaterfromotherareas.alluvialchannel,n—seealluvialstream.alluvialdeposit,n—sedimentdepositedbytheactionofmovingwater.alluvialfans,n—sedimentdepositedintheshapeofasegmentofaconeformedbecauseofasuddenflatt...
