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<br />- <br />"I~ <br /> <br />, ' <br />". J" <br />, <br /> <br />, <br /> <br />I <br />\ <br />7\ <br /> <br />.!......--- <br /> <br />!!!!1 <br /> <br />1. <br /> <br />DESCRIPTION <br />UDdepIeced Flow Above take POwell <br /> <br />- -.- <br /> <br />,/ <br /> <br />(/ //' <br /> <br />DECEIlBER <br />1984 DIFFERENCB <br />~ (CRSS-CRSP) <br /> <br />15,056 <br /> <br />'227 <br /> <br />42 <br /> <br />29. <br /> <br />J <br /> <br />'Comparison of Results from S~1ation of Colorado River Operacions <br />eRSS va. eRSP <br /> <br />r ..~ <br />-" '~ <br />. .: . .-. <br />, ,it_I.,..... <br /> <br />o <br />o <br />i-A <br />-..] <br />... <br /> <br />" <br /> <br />7. Lake Mead EvaporatioD (Estimated) 726 803 7-7 <br />8. Lake Head-Annual Storas_ Change (142) (151) (9) <br />9. Net IDflow-Glea. Caa.yoa. to Roove'E' 25 (95) (120) <br /> (IS - 16 - 17 - 18) " <br />10. SoaveI' Rele..e. (Al.o 12 + '9) 9.448 9.879 431 <br /> I <br />11. Deplecion-Hoover to Parker D.. 224 207 (17) MWD auc:J. CAP depletions an itemized. separately. <br /> <br />2. <br /> <br />Clen Canyon bam Rele.s.a <br />Nec Upper B..1o DepletioD (11 - 12) <br /> <br />3. <br /> <br />4. <br /> <br />Scheduled Upper Bas10 D~p1etIoQ. <br /> <br />\ <br /> <br />5. <br /> <br />Tributary Inflow-Glea. Canyon to Hoover <br /> <br />-6. <br /> <br />Depletioo-Clen C.uyaa. to Hoover. <br /> <br />/ <br /> <br />,/ /. <br />'-~V'" '; <br /> <br />JANllARY <br />1981 <br />~ <br /> <br />14.829 <br /> <br />9,423 <br />'5.406 <br /> <br />5.434 <br /> <br />877 <br /> <br />268 <br /> <br />( <br /> <br />9.974 <br />5.082... <br /> <br />551 <br />(324) <br /> <br />5.476 <br /> <br />854 <br /> <br />(23) <br /> <br />297 <br /> <br />EXPLANATORY NOTES <br /> <br />eRSP model inflow data was depleted by the 1968 levels of d~plet1on. <br />Undepleted flo~ is estimated by adding 2.111 maf (est1~ted 1968 <br />depletion) to the average of the inflow data for years 1906 througb 1919. <br />CRSS data was the natural "flow data base for years 1906 through 1983. <br />(official versiou as of the study date) <br /> <br />This figure includes the effect of evaporation. surface and bank stQrage <br />ehanges 1n reservoirs. and consumptive use in the Upper Basin 8S <br />simulated by each model. <br /> <br />These figures are the average water depletions for the study period 1985 <br />through 2040 imposed respectively on the CRS? and CRSS models for this <br />comparison. They differ from the actual depletions in that they include <br />Ian average anticipated amount of evaporation. In CRSS~ the seheduled <br />depletions are usually reduced to some degree by water shortages. <br />particularly in the headwater reaches. <br /> <br />This figure 18 t.he apparent. average depletion over the period 1985 through <br />2040. It was computed by summing all other inflows. outflows, and storage <br />changes for the. Glen Canyon to Hoover reach. The f1gure thus dedved <br />agrees closely with the average scheduled demands used with both the CRSP <br />and cass studies. <br /> <br />r <br /> <br />