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<br />o INTRODUCfION <br />c.JI <br />00 The technique presented in this paper is offered as a simplified <br />-...J <br />means of studying a variety of possible regulation schemes on streams <br />subject to new consumptive uses. The oil shale industry's possible use <br />of the White River in Colorado and Utah is given as the example in this <br />paper. The output of this method is the distribution of flows expected <br />following the new consumptive uses and the seleeted regulation criteria, <br />Additionally, the lowest flows and the average flows are computed. <br /> <br />This technique is in two major parts. The first is the characteriza- <br />tion of the natural inflows over the period of record as discrete random <br />variables. Questions of seasonal and annual dependency and correlation <br /> <br />are addressed in this part of the method, The second part simply entails <br />operating on the natural inflow random variables relative to the possible <br />regulation schemes and consumptive uses nnder consideration. While the <br />first part can involve some fairly complex statistical methods, the second <br />part requires only additions and subtractions following the probability <br /> <br />laws. Computer programs can be prepared to implement each part of this <br /> <br />technique, <br />The alternative method to this type of analytic technique is simulation. <br />While this analytic technique has limitations, so does any simulation method. <br />In general, simulations cannot take advantage of the simplifying steps <br />used in this analytic approach, This makes the input clata more cumbersome. <br /> <br />Furthermore, the statistical analysis of simulation results is difficult. <br />However, the results from this technique can be compared against those from <br /> <br />any simulation of the same uses and regulation criteria. <br />