Precipitation-Runoff and Streamflow-Routing Models for the ...

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APPENDIX 3. DEFINITIONS OF PARAMETERS USED IN THE PRECIPITATION-RUNOFF MODELING SYSTEM(PRMS)—CONTINUEDParameterDescriptionISUNITNDITSTITSWKDCKDSKGWKRESKRSPKSATKTSLBCNCRSEGNDSNDXNGWNIRUNOFSEGNRESNRUNSNSPPARM1PARSPARWPATPCRIDPERVPSPRBAStorm subsurface and ground-water routing switch (0=not done,1=subsurface and ground-water included in storm mode computation)Month that transpiration ends for each hydrologic-response unitMonth to begin checking for start of transpiration for each hydrologic-response unitTranspiration switch for each hydrologic-response unit (0=vegetation dormant,1=vegetation transpiring)Index of snow covered area depletion curve for HRUIndex of rain gage associated with each hydrologic-response unitIndex of ground-water reservoir receiving seepage from each hydrologic-response unitIndex of subsurface reservoir receiving seepage from each hydrologic-response unitIndex of ground-water reservoir receiving seepage from eachsubsurface reservoirHydraulic conductivity of transmission zone—storm modeIndex of temperature gage associated with each HRUI.D. of overland flow plane providing lateral inflow to channelsegment—storm modeNumber of channel routing segments—storm modeNumber of rain gage data setsNumber of intervals to subdivide overland flow planesNumber of ground-water storage reservoirsHydrologic-response unit associated with overland flow plane—storm modeNumber of overland flow planes—storm modeNumber of subsurface storage reservoirsNumber of hydrologic response unitsNumber of hydrograph segments in storm period—storm modeNumber of storm periods—storm modeKinematic parameter alpha for plane or channel type = 4; or width of channel forchannel type = 1 or 3—storm modeCorrection factor for computed solar radiation on summer day with precipitation(decimal fraction)Correction factor for computed solar radiation on winter day with precipitation(decimal fraction)Maximum air temperature, which when exceeded forces precipitation to be rainregardless of minimum air temperature, for months I = 1, 12Identification characters for overland flow planes, channel and reservoir segmentsand junctions—storm modePercent of pervious area on each hydrologic-response unit (decimal)Combined effect of moisture deficit and capillary potential (inches)—storm modeIndex of overland flow segment to be used as input to channelsegment—storm mode112
APPENDIX 3. DEFINITIONS OF PARAMETERS USED IN THE PRECIPITATION-RUNOFF MODELING SYSTEM(PRMS)—CONTINUEDParameterDescriptionRBCRCBRCFRCPRDBRDCRDMRDMXRDPRECHRREMXRESRESMXRETIPREXPRGFRMXARMXMRNSTSRNSTWRSEPRSTORRTBRTCSCNIdentification of overland flow plane providing lateral inflow to channel segment—storm moderouting coefficient for each ground-water reservoirLinear routing coefficient for each subsurface reservoirNonlinear routing coefficient for each subsurface reservoirCoefficient used in sky cover - solar radiation relationY - intercept for relation between temperature (X) and 1) degree day (Y) or 2) skycover (Y) when MRDC = 1 or 2Slope for relation between temperature (X) and 1) degree day (Y) or 2) sky cover(Y) when MRDC = 1 or 2Maximum percent of potential solar radiation (decimal fraction)Coefficient used in sky cover—solar radiation relationStorage in upper part of soil profile where losses occur as evaporationand transpiration (inches)Maximum value of RECHR for each hydrologic-response unit (inches)Storage in each subsurface reservoir (acre - inches)Coefficient for routing water from each subsurface reservoir to ground-water reservoirMaximum retention storage on impervious area for each hydrologic-responseunit (inches)Coefficient for routing water from each subsurface reservoir toground-water reservoirRatio of combined effects of moisture deficit and capillary potentialat wetting front from wilting point to field capacity—storm modeProportion of rain in rain/snow event above which snow albedo is not reset forsnowpack accumulation stageProportion of rain in rain/snow event above which snow albedo is not reset forsnowpack melt stageInterception storage capacity of unit area of vegetation for rainduring summer period, for each hydrologic-response unit (inches)Interception storage capacity of unit area of vegetation for rain (inches)during winter period, for each hydrologic-response unitSeepage rate from each subsurface reservoir to ground-water reservoir(inches per day)Retention storage on impervious area for each hydrologic-response unitY - intercept of temperature range (TMAX(HRU) - TSOLX(MO)) - estimatedsolar radiation adjusted factor (PA) relationSlope of temperature range (TMAX(HRU) - TSOLX(MO)) - estimatedsolar radiation adjusted factor (PA) relationMinimum contributing area for surface runoff when ISSR1=0;coefficient in contributing area—soil moisture index relation when ISSR1=1113
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Precipitation-Runoff and Streamflow
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U.S. DEPARTMENT OF THE INTERIORBRUC
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Determining Travel Time and Dilutio
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2. Stream-gaging stations used to c
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network-routing models where availa
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made on the main stem at base-flow
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Figure 1. Willamette River Basin, O
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EvapotranspirationINPUTSAirtemperat
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Table 1. Climate stations used to c
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Table 2. Stream-gaging stations use
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Figure 4. Mean annual precipitation
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Major Land Use MapHydrologic Soil G
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0.5 mi 2 , created in the merge of
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Table 6. Geology and soils matrix o
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tion value of the HRU class by the
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Table 8. Selected monthly basinwide
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Figure 9. Location of Precipitation
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Table 11. Statistical analyses of P
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flow can become a significant compo
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diffusion at selected grid interval
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samples were collected at various d
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3,0002,500June 21-30, 1993September
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stream network is shown on figure 1
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122˚30´ 15´122˚00´121˚45´Roc
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123˚22´30´´ 123˚15´ 123˚00´
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123˚00´´ 45´30´122˚15´45˚15
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YamhillRiver123˚45´ 30´ 15´123
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123˚07´30´´ 123˚00´ 45´ 30´
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123˚07´30´´ 123˚00´ 45´ 30´
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44˚15´14166000122˚07´30´´Will
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122˚15´ 122˚00´121˚52´30´´4
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44˚52´30´´45´122˚15´ 122˚00
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observed flow at the Willamette Riv
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DAFLOW model, and peak amplitude is
Page 72 and 73: 20DYE CONCENTRATION, IN MICROGRAMS
Page 74 and 75: ARC-INFO and Geographic Information
Page 76 and 77: WILL.WDMData-base file(Observed pre
Page 78 and 79: WILL.WDMData-base fileSWSTATSFreque
Page 80 and 81: Jobson, H.E., 1980, Comment on A ne
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Page 84 and 85: APPENDIX 1. STREAM GEOMETRY FOR MAI
Page 110 and 111: APPENDIX 2. ARC MACRO LANGUAGE (AML
Page 124 and 125: APPENDIX 3. DEFINITIONS OF PARAMETE
Page 126 and 127: APPENDIX 4. MEASUREMENTS USED TO DE
Page 134 and 135: APPENDIX 5. EXAMPLE PRECIPITATION-R
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Page 138 and 139: APPENDIX 6. DIFFUSION ANALOGY FLOW
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Page 160 and 161: 150Climatemaxtempmintempprecipitati
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APPENDIX 10. DIRECTORY TREE AND DES
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APPENDIX 11. DIRECTORY TREES AND DE
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APPENDIX 11. DIRECTORY TREES AND DE
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APPENDIX 12. DIRECTORY FOR will.wdm
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APPENDIX 13. PROGRAMMING STEPS FOR
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APPENDIX 14. INPUT FILES FOR BRANCH
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