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

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123˚22´30´´ 123˚15´ 123˚00´ 122˚45´45˚45´E FkDairy CreekWFkCreekDairy CrGalesDairy CreekCreekMcKayScoggins45˚30´TualatinRockCreek14203500TualatinButternutCrCreekFannoCreekRiverChristensen CrRiverMcFeeCreekTualatinRiver45˚22´30´´0 5 10 MILES0 5 10 KILOMETERSChickenCr14207500Base from U.S. Geological Survey digital data, 1:100,000, 1978-84Universal Transverse Mercator projection, Zone 1014207500RM 4.811EXPLANATIONTributary inflowDiversion (outflow)Stream-gaging station andU.S. Geological Surveyidentification numberRiver mile—measured fromthe mouth of Tualatin RiverModel junction numberModel branch number1Gales CreekDairy CreekRMRM RM RM RMRMRM RM RM14203500 56.744.8 38.1 38.1 35.7 30.99.3 6.7 6.6 14207500RM 58.8 RM 1.8Figure 19. Tualatin River Basin, Oregon, and schematic diagram of the stream network.1USA 1 inflowRock CreekButternut Creek2Unnamed drainagesRM31.9Christensen CreekTualatinRM28.2McFee/HeatonCreeks2RM15.2Chicken CreekRiverFanno CreekUSA 1 inflow1Oswego CanaldiversionUnnamed drainages3USA is UnifiedSewerage Agency42
100,000ObservedSimulated10,000DISCHARGE, IN CUBIC FEET PER SECOND1,00010010the basin was about 90 ft 3 /s for all water uses; therefore,the difference between observed and simulatedflows of about 100 ft 3 /s (fig. 20) for the summermonths is a reasonable departure. Flow departureshown for the winter of 1976–77 is for additionalwater diverted into Lake Oswego at a point justupstream from the gage.Molalla RiverO N D J F M A M J J A S O N D J F M A M J J A S1977 1978WATER YEARFigure 20. Observed and simulated discharge from combined Precipitation-Runoff Modeling System) and DiffusionAnalogy Flow model modeling for the Tualatin River at West Linn, Oregon (stream-gaging station 14207500), 1977–78water years. (See Glossary for program descriptions.)The mapped and schematized Molalla Riverstream network is shown on figure 21. The MolallaRiver is schematized as a five-branch network with 13tributary inflows. Discharge hydrographs fromobserved data at the USGS stream-gaging station onthe Molalla River above Pine Creek near Wilhoit(14198500) at RM 32.2, and the stream-gaging stationon Silver Creek at Silverton (14200300, discontinued)at RM 52.8 on the Pudding River, were used asupstream boundary inputs. Subbasin hydrographs forthe tributaries were simulated by PRMS modeling andinput to the Willamette WDM file. These hydrographswere then input to the appropriate grid locations forDAFLOW modeling. The input file for this networkcan be found in Appendix 7.Figure 22 shows the results of routing the inputflow 26.2 miles downstream, where it can be comparedto observed flow at the Molalla River at Canbystream-gaging station (14200000). PRMS was used to43
Page 1: Precipitation-Runoff and Streamflow
Page 4 and 5: U.S. DEPARTMENT OF THE INTERIORBRUC
Page 6 and 7: Determining Travel Time and Dilutio
Page 8 and 9: 2. Stream-gaging stations used to c
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Page 12 and 13: network-routing models where availa
Page 14 and 15: made on the main stem at base-flow
Page 16 and 17: Figure 1. Willamette River Basin, O
Page 18 and 19: EvapotranspirationINPUTSAirtemperat
Page 20 and 21: Table 1. Climate stations used to c
Page 22 and 23: Table 2. Stream-gaging stations use
Page 24 and 25: Figure 4. Mean annual precipitation
Page 26 and 27: Major Land Use MapHydrologic Soil G
Page 28 and 29: 0.5 mi 2 , created in the merge of
Page 30 and 31: Table 6. Geology and soils matrix o
Page 32 and 33: tion value of the HRU class by the
Page 34 and 35: Table 8. Selected monthly basinwide
Page 36 and 37: Figure 9. Location of Precipitation
Page 38 and 39: Table 11. Statistical analyses of P
Page 40 and 41: flow can become a significant compo
Page 42 and 43: diffusion at selected grid interval
Page 44 and 45: samples were collected at various d
Page 46 and 47: 3,0002,500June 21-30, 1993September
Page 48 and 49: stream network is shown on figure 1
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Page 56 and 57: YamhillRiver123˚45´ 30´ 15´123
Page 58 and 59: 123˚07´30´´ 123˚00´ 45´ 30´
Page 60 and 61: 123˚07´30´´ 123˚00´ 45´ 30´
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Page 64 and 65: 122˚15´ 122˚00´121˚52´30´´4
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Page 68 and 69: observed flow at the Willamette Riv
Page 70 and 71: 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
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APPENDIX 1. STREAM GEOMETRY FOR MAI
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APPENDIX 2. ARC MACRO LANGUAGE (AML
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APPENDIX 3. DEFINITIONS OF PARAMETE
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APPENDIX 3. DEFINITIONS OF PARAMETE
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APPENDIX 4. MEASUREMENTS USED TO DE
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APPENDIX 5. EXAMPLE PRECIPITATION-R
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APPENDIX 5. EXAMPLE PRECIPITATION-R
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APPENDIX 6. DIFFUSION ANALOGY FLOW
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APPENDIX 7. PROGRAMMING STEPS TO IN
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APPENDIX 8. PROGRAMMING STEPS TO DE
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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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