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<br />, <br />. .j <br /> <br />3 <br /> <br />90 percent of 1ts sed1ment load. In _ river segment that has had <br />three ot its four listed endangered fish species extirpated in <br />just 20 years, finding waye to assure the survival of the on. <br />remaining species, the humpbacked chub. will not b. ea.y. tn <br />fact, in a sy_tea that has been so drastically changed and is <br />~urrently in a state of real disequilibrium. giving assurances <br />about the' future at any river- atrected resource 1. a _jor' <br />challenge. <br /> <br />The tact that w.'are going to try represents a poeit1ve' atep. <br />Batteryat, we have recognized our respocl_ibillty to do 80. at <br />least many ot ue hav.... That includes sOlie 1n pubUc policy <br />making po81t10ftS. Senat~r John McCain of Al:'1zon& \If&8, <br />instruaental In urging the Secretary to undertake the 2IS, and <br />he was joined by Senator DeConcini in a written reque.t tor that <br />action. All five Arizona representatives signed a joint letter <br />to tbe Secretary calling tor th.. 8IS, and . sound managellent <br />deciaion tor Glen canyon Oa.. The next few aonths will .ake 1~ <br />clear just how wide.pread that COMmitment is. <br /> <br />In accordanc. with the 1922 Colorado R1v.r Co.pact. the "aters <br />at the river are apportioned between tha upper b..in and lower <br />baein atate.. Under that coapact at leaat 8.23 ailllon acre <br />teet ot water a year must be releaaea troa the daa. M..tiD~ <br />compact water require.ents i8 not the proble.'. Ho one i. <br />seeking to change- the... Th. crit1cal iS8ue to be decided' 4e.ls <br />with how that water i_ released on a daily ba.i., and'wbeth.r <br />aaximizing electrical power production should d1ctate reI..... <br />regardless ot the coneequence. to all other down.trea.- re.ol11'ce. <br />and the i.pacts to Grand Canyon National Park. <br /> <br />Aa Glen Canyon Daa is presently operated, water levels in the, <br />riv.r aay fluctuate from tlows... low as 1,000 cubic teet per <br />second (cte) to as bigh ae 31.000 cte, wbich can create a <br />vertical riaea~ faU, in the, river ot nearly 1,3 taet" ,in a <br />8ingle'dav. "This "load tollowing,' peaking po_r" operation <br />produces lots at power when the' deaand is h1gh, and abuts' power <br />productIon and water Uows down when the cSelMD4 1. low, late .t <br />night or on _eleends. Unfortunately both the extra.e. of tlowe <br />and the rapid up and down yo-yoing rate are responaible tor MUch <br />of the 10... degradation and destruction at natural, Park. and <br />recr.ational valuea. <br /> <br />It 1s all too easy to describe what 1s go1ng on at Glen Canyon <br />Dam ae an i.aue of "Power or the Environment". Tnls is hardly <br />the case. In fact, It the water delivery now. are aanaged <br />correctly. except 1n time. of .ajor flooda. every drop ot water <br />. that flows through the d... goes through turbinea an4 producee <br />energy. Thls would be true it there were no daily tluctuations' <br /> <br />. <br /> <br />I <br /> <br />. f <br />. , <br /> <br />; <br /> <br />. i' <br /> <br />., <br />. <br /> <br />, <br />, <br /> <br /><, <br />.{ <br /> <br />t~ <br />;;1 <br /> <br />.- <br /> <br />-' <br /> <br />" <br /> <br />\: <br /> <br />" <br /> <br />r', <br />I,; <br />,;1 <br />" <br />~ <br />>, <br />1-'- <br />,~ <br />it <br />~', : <br />~: <br /> <br />.-;, <br />" <br />( <br /> <br />>, <br />,{ <br />~ <br /> <br />:;". <br />~\ <br />,co' <br />;, <br />~;~ <br />.\' <br /> <br />;;;; <br />~}. <br />l.-i; <br />'. <br />;.~;, <br /> <br />t'; <br />rJ <br />If <br /> <br />~. -~ <br />r' <br />?;~ <br />:~ <br />t~~ <br />,-- <br />". <br />~ <br />~I <br />~:, <br />.~~. <br />~?. <br />. ;:? <br /> <br />.', <br /> <br />.~ <br />. :~.~ <br />f' <br /> <br />.' <br /> <br /> <br />~ : <br />-' Cf, <br />