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<br /> <br /> <br />)'1 <br />~I <br />'l.: : <br /> <br />l <br /> <br />"') " ~ \ ~'- <br />UlJ~J(JJ <br /> <br />HYDROLOGIC MODELS INVENTORY <br /> <br />EVALUATION FORM <br /> <br />NAME OF MODEL: PEAKWRN <br /> <br />FUNCTION: Estimates daily evapotranspiration data for project facility <br />sizing. <br /> <br />AGENCY & OFFICE: USBR - Denver Office - Water Resources Section <br /> <br />TECHNICAL CONTACT: Eldon Johns (D5752) 303-236-3810 <br />FTS 776-3810 <br /> <br />MACHINE COMPATIBILITY: CDC Cyber Computer System <br /> <br />DOCUMENTATION: Documentation available in draft form. Referenced in <br />"Estimating Irrigation Water Requirements," U.S. Bureau of Reclamation, <br />September 1970. <br /> <br />SPATIAL PRECISION: Point estimates based on weather station location. <br /> <br />TEMPORAL PRECISION: Daily or multiple day increments. <br /> <br />OVERVIEW OF CAPABILITIES, ASSUMPTIONS: <br />facilities (pumping plants, canals and <br />method accurately computes consumptive <br />precipitation. <br /> <br />Focuses strictly on sizing of project <br />pipelines). Assumes Jensen-Haise <br />use. Assumes no effective <br /> <br />STRENGTHS: Flexibility in providing estimates for varying time intervals <br />(1 day, 3 day,S day, etc.) and allows for different crop distributions. Well <br />tested and technically sound. <br /> <br />WEAKNESSES: Substantial data requirements. Specialized to sizing <br />applications. Assumptions related to effective precipitation are very <br />conservative. <br /> <br />INPUT REQUIREMENTS: Climate and related data including temperature and solar <br />radiation, crop phenology and soils data. <br /> <br />OUTPUT PRODUCED: Conveyance Sizing Curve and related support data. <br /> <br />1-7 <br />