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<br />1I ~j _ J U II <br /> <br /> <br />_. <br />_ ':,,-;':':r :;os.-.-, , _,-," <br />. I:' -'"~~.""~ _.... ~.,~. ~ ~. <br />WATERSHED ODELlNG . <br />..-.;:. Y"~~rSYSTEMSINITIATIVE ~.. ~ "" <br />U.S. GEOLOGICALTSURYEY1AND BUREAU OF RECLAMATION NEWSLETTER <br />~i f WINTER 1995 ~::; <br /> <br />Project Backg!:2.U~ I <br />In Oclober 1994. technical specialists from the Bureau <br />of Reclamation (Reclamalion) and the U.S. Geological <br />Survey (USGS) began a cooperalive effort to develop <br />and implemenl WOller-resources models and integrated <br />dala-base managemenl systems in Ihe western United <br />Slates. This cooperative effort is known as the <br />Watershed ~1odeling Systems Initiative (\VMSI). <br />WMSI, ......hich was conceived in 1992. focuses on giv- <br />ing waler resources managers better modeling tools <br />and data with which to make complex operational <br />decisions on multipurpose reservoir systems and <br />watersheds. The San Juan and Lower Colorado River <br />Basin.s were selected as the first locations for imple- <br />mentation of these products. Key issues to be <br />addressed include (but are not limited to) efficiency of <br />water-resources management. environ menial con- <br />cerns such as meeling the flow needs for endangered <br />fish species. and optimiZ<.ltion of operations within <br />constraints for muhiple objectives such as conserva- <br />lion of water. <br /> <br />Two modeling frameworks or system~-the l\-lodular <br />Modeling System tMMS) and the Power and <br />Reservoir System Model (PRSYM)--and the develop- <br />ment of a relational data base 10 provide dala for Ihese <br />systems are the focal point of the present rese:nch. <br />development. and implementation effort. The model. <br />ing systems and data base operale in a Unix-Work <br />Stalion environment and can be execOled from a DOS <br />environment with the purchase of inexpensive emula- <br />tion software. <br /> <br />MMS I <br /> <br />MMS is a modeling framework which supports the <br />application of a variety of precipitation-TUnolT process <br />models. It has been developed by USGS researchers <br />with financial and lechnical support from other agen. <br />cies and has been used extensively in global c1imale <br />change research. It will be the focal point of the <br />hydrologic process modeling. <br /> <br />PRS"y:M_ I <br /> <br />PRSYM is a general purpose reservoir simulation and <br />optimization model developed jointly by Reclamalion. <br />the Eleclric Power Research Institute (EPR!). <br />Tennessee Valley Authorily (TVA). and the Cenler for <br />Advanced Decision Support for Water and <br /> <br />Em'ironmental Systems (CADSWES). PRSYM will <br />provide key information for the operational <br />decisions which WOller resource managers need <br />to make-initially for monthly and daily operalions on <br />the Colorado River. San Juan River. and Pecos River <br />Basins. Presemly. these capabilities are being imple- <br />mented at Hoover Dam for lower Colorado River oper. <br />alions. <br /> <br />~erarional Data Base " ~ <br />The focus of the relational data.base development will <br />be on developing the data base and procedures Ihat will <br />make transferring dala bel ween PRSYM. MMS. and <br />other modules as transparent as possible to the user. <br />For the San Juan Basin. the relalional data base is being <br />developed by Reclamation personnel from the Upper <br />Colorado Regional Office and the Durango Field <br />Office. The process and procedures for accessing the <br />data base will be developed jointly by USGS and <br />Reclam:llion. <br />S.talus - ~#;;;~.c:+~~ <br />Technical work groups of Reclamation and USGS per. <br />sonnel have been sel up to focus on water quantity. <br />water quality and system integration issues. The latest <br />release of PRSY~I is capable of making basic simula- <br />lions and applying linear programming optimization. <br />Inilial calibralion of the MMS system using data from <br />Ihe San Juan Basin is expected by April 1995. and the <br />inilial interfacing of MMS and PRSYM through the <br />relational data base is c:~pccted to be completed by <br />September 1995. <br /> <br />~o,ntacts <br /> <br />Further infonnalion on the initialive can <br />from the following individuals: <br /> <br />Bureau of Reclamation: <br />Terry Fulp. (303) 492-8570 <br />c.mail: tfulp@cadswes.colorado.edu <br />Brad Vickers. (SOl) 5.2+-5576 <br />e-mail: wvickers@ucsun3.uc.usbr.gov <br />Don Frevert. (303) 236-01.23. ex!. 225 <br />e.rnail: 8d05QOO..l.,dfrevert%ibr8smlp@po.usbr.gov <br /> <br />U.S. Geological Survcy: <br />Randy Parker. (303) 236----4882, ex!. 295 <br />e.mail: rsparker@rspdcolka.cr.usgs.gov <br />George Leavesley. (303) 236---5026 <br />e-mail: george@snow.cr.usgs.gov <br /> <br />';.\t'~1 <br />be obtained <br />