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<br />workshops with clients using a range of wat~r <br />resources tools including hydrology, water r~- <br />sources engmeenng, multi,criteria decision <br />making, operations research methods, multivari- <br />ate statistical analyses and regression, stream- <br />flow synthesis, systems analysis, time seri~s <br />modeling, computer models of rivers and reser- <br />voirs, reservoir operation models, models of <br />rainfall and snowmelt processes, statistical <br />analyses, ground-surface water interaction mod- <br />els, groundwater flow models, and models of <br />water rights operations and administration, <br /> <br />. Developed work plan for 14 cooperating gov- <br />ernmental agencies in the State of Nebraska in <br />developing their decision support system for sur- <br />face and groundwater interactions in the Platte <br />River Basin <br /> <br />. Developed inventory and summary of available <br />surface water allocation models for the Platte <br />River in Nebraska that has been distributed to <br />over 100 individuals. <br /> <br />. Participated as an invited speaker at several <br />stormwater, hydropower and irrigation associa- <br />tion conferences, addressing urban stormwater, <br />stormwater utilities, floodplain impacts, iI)_ <br />stream flow needs, impacts of projects on habi- <br />tat, myths regarding the use of hydrology and <br />fluvial hydraulics in case studies, and opport!]- <br />nities for coordinated, scientific investigation {)f <br />project impacts, <br /> <br />, Authored the leading textbook chapters de- <br />scribing state-of-the-art computer simulation <br />models for surface water systems analysis, <br /> <br />Development and Application of Surface Water <br />Models <br /> <br />. Participated with the Kansas City District of the <br />Corps of Engineers in developing a flood event <br />computer program, HEP, and training hydrolo- <br />gists from state, private, and university sectors in <br />using the program. <br /> <br />. Managed developments of models and hydro- <br />logic evaluations needed by the Nebraska AttOr- <br />ney General's office in evaluating the claims by <br /> <br />~ <br />~::J PARSONS <br /> <br />Gary L,. Lewis, Ph.D., P.E. <br />Senior Watt~r Resources Engineer <br />Page 7 <br /> <br />Nebraska that Wyoming is violating terms of a <br />Supreme Court Decree, <br /> <br />, Managed the development of a daily simulation <br />model of the complex flow, storage, and water <br />rights decision processes involved in designing <br />and operating the proposed Deer Creek Reser- <br />voir near Casper, Wyoming, <br /> <br />. Developed an inventory and published a sum, <br />mary of available surface water allocation mod- <br />els for the Platte River in Nebraska, <br /> <br />. Managed the development 0 f a river basin reser- <br />voir screening model, utilizing integer and sepa- <br />rable nonlinear mathematical programmmg <br />teclmiques, to study integrated surface and <br />groundwater development and management op- <br />tions available to the Upper Big Blue Natural <br />Resource District of Nebraska, <br /> <br />. Participated in the development of synthetic <br />streamflow and flood hydrology for analyzing <br />the feasibility of the Horse Creek re-regulating <br />reservoir in eastern Wyoming, <br /> <br />. As part of the U,S, Water Resources Council's <br />Platte River Level B study, developed a mathe- <br />matical optimization model and applied it to <br />screening among a wide range of federal, state, <br />and local multipurpose projects in the Elkhorn <br />River sub,basin, Separable nonlinear and para- <br />metric programming were used to sort among <br />over 250 proposed SCS flood retarding struc, <br />tures, 18 Corps of Engineers multi-purpose <br />structures, and 3 fulI-scale U,S, Bureau of Rec' <br />lamation irrigation projects, using a variety of <br />objective functlOns, <br /> <br />. Participated in formulating a surface watcr <br />mathematical optimization model and conduct- <br />ing preliminary screening on a fuII range of <br />structural and nonstructural options for dealing <br />with continuing flood problems in the Weepmg <br />Water Watershed of southeastern Nebraska; <br />utilized regional objectives to search for a feaSI- <br />ble project in an area where natIOnal economic <br />development cliteria were previously unable to <br />provide relief. <br /> <br />0221ewigl17.doc/Q400# <br />