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

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stream network is shown on figure 15. JohnsonCreek is schematized as a one-branch network withthree tributary inflows. A discharge hydrographfrom observed data at the USGS stream-gaging stationon Johnson Creek at Sycamore (14211500) atRM 10.2 was used as the upstream boundary input.Subbasin hydrographs for Deerdorf Creek, Begger’sTick Marsh, and Crystal Springs drainage were simulatedby PRMS modeling and input to the WillametteWDM file. Crystal Springs inflow also wasestimated, merged with the Crystal Springs drainagehydrograph, and input to the WDM file.Figure 16 shows results of routing the inputflow 9.5 miles downstream, where it can be comparedto observed flow at the Johnson Creek at Milwaukiestream-gaging station (14211550). PRMSwas used to simulate 25.3 mi 2 (square miles) ofintervening drainage area (49 percent of the basin).The period of record used for calibration was 1989–90, because the lower Johnson Creek stream-gagingstation was not installed until 1989. Statistical resultsfor the calibration period (table 12) show an absoluteerror of 9.4 percent between simulated and observeddata, with virtually no bias.Clackamas RiverThe mapped and schematized Clackamas Riverstream network is shown on figure 17. The ClackamasRiver is schematized as a one-branch networkwith four tributary inflows. A discharge hydrographfrom observed data at the USGS stream-gaging stationon the Clackamas River at Estacada (14210000)at RM 23.1 was used as the upstream boundary122˚30´ 22´30´´122˚15´45˚30´Johnson14211500CreekWillamette14211550River0 5 MILES0 5 KILOMETERS45˚22´30´´Base from U.S. Geological Survey digital data, 1:100,000, 1978-84Universal Transverse Mercator projection, Zone 1014211550RM 0.711EXPLANATIONTributary inflowStream-gaging station andU.S. Geological Surveyidentification numberRiver mile—measured fromthe mouth of Johnson CreekModel junction numberModel branch numberCrystal SpringsJohnson RM 5.5 Creek RM 9.221RM 1.3114211550 14211500RM 0.7 RM 10.2Beggar’s TickMarsh (Hwy 213)Deardorf CreekFigure 15. Johnson Creek Basin, Oregon, and schematic diagram of the stream network.38
1,000ObservedSimulatedDISCHARGE, IN CUBIC FEET PER SECOND10010O N D J F M A M J J A S O N D J F M A M J J A S1990 1991WATER YEARFigure 16. Observed and simulated discharge from combined Precipitation-Runoff Modeling System and Diffusion AnalogyFlow modeling for Johnson Creek at Milwaukie, Oregon (stream-gaging station 14211550), 1990–91 water years. (SeeGlossary for program descriptions.)input. Subbasin hydrographs for Eagle, Deep, Clear,and Rock Creeks were simulated by PRMS modelingand input to the Willamette WDM file.Figure 18 shows the results of routing the inputflow 18.3 miles downstream, where it can be comparedto observed flow at the Clackamas River atClackamas stream-gaging station (14211000). PRMSwas used to simulate 265 mi 2 of intervening drainagearea (28 percent of the basin). Statistical results indicatean absolute error of 7.2 percent for the calibrationperiod and an absolute error of 7.1 percent for the verificationperiod, with a bias error of +2.5 percent forboth periods (table 12). Water-use information fromBroad and Collins (1996) indicate that the annual consumptionin the basin for 1990 was about 60 ft 3 /s for allwater uses, which is about 6 percent of the summertimeflow of the Clackamas River at its mouth. Althoughwater consumption is small for this basin compared toother Willamette River basins, it still may account forthe positive bias of the simulation.39
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
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Page 52 and 53: 123˚22´30´´ 123˚15´ 123˚00´
Page 54 and 55: 123˚00´´ 45´30´122˚15´45˚15
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´
Page 62 and 63: 44˚15´14166000122˚07´30´´Will
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
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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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