Laserfiche WebLink
<br /> <br />C) <br />('~) <br />f'-' <br />~.... <br />-.l <br />OJ 144 <br /> <br />5.4. Section 5.5 contains the values and sources of all control <br /> <br />variables used in subsequent simulations. <br /> <br />5.2 Simulation Program Structure and Operation <br /> <br />Figure 5.1 displays a flow diagram of the Colorado River Basin <br /> <br />computer model. The model performs synthetic streamflow generation, <br /> <br />stream salinity generation, routing of water and total dissolved <br /> <br />solids through Lakes Powell and Mead, and other tasks in a downstream <br /> <br />direction. The subroutines corresponding to submodels of these <br /> <br />various basin processes are indicated in the margin of the figure. <br /> <br />The simulation program, which initializes and operates the river <br /> <br />basin model, is displayed in Figure 5.2. The structure of the program <br /> <br />allows simulation studies to be carried out in the manner indicated <br /> <br />previously in Figure 1.4. <br /> <br />Program operation proceeds twelve months at a time in a down- <br /> <br />stream fashion. On the first year of simulation each subroutine reads <br /> <br />from disk storage or data cards all of the parameters, initial con- <br /> <br />ditions, or other information necessary for its specific task. <br /> <br />Statistical information on the first and second moments of each <br /> <br />variable on a monthly and annual basis is accumulated in each sub- <br /> <br />routine and printed out at the conclusion of the simulation run. The <br /> <br />simulation program includes a capability for rejecting the first M <br /> <br />years of simulation as a transient time. If M is non-zero, statistics <br /> <br />are reinitialized and accumulated on the next N years of simulation. <br /> <br />Initial and final conditions corresponding to reservoir storage of <br /> <br />water and dissolved solids are also printed out. <br />