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<br /> <br />=. <br />~ <br /> <br />001481 <br /> <br />framework of coope~ti~n to d~op jo.inr srudies of this problem. . <br />Under the .framework. the effect of B.aws on the riparian and estuar- <br />. , <br />ine ecology would he examined to define habitat needs of fish and <br />mcirine and wildl~fe species of con am to each cour~try. -; <br />The Rio Grande can also be expec::ted to co~tinue [0 experience <br />cc:ducafflows.. Downstream ofFon Quicrnan in Texas. fur instance, . <br />the Rio G;.Dde's natural processes have been alteic:d eXrensivdyfur <br />n';ly a century. In this 20a-miIe reaeh, a build-~p of sediment <br />from periodicsrottnS in the river's tributaries and the absence of any <br />significant ~"aiilStream fl~w to moVe this sediment ~Ownsi:ream, has <br />obliterated the river channel. A mo~o-culrure of exotic salt cedar <br />now lines the rip~fan zone for. hWldieds of miles, compet~g for <br />water wich species with greaceJ; wildlife _ habitat ~ue...: Water "mat <br />does make it past Fon.Quirman"is maiOly ~~orm runoff and munici- <br />pal and agriculture return flows. <br /> <br />~l <br />-'I <br /> <br />~1lQI\I <br /> <br />..::...\ <br />^J ;: <br />. -. , <br /> <br />... <br /> <br />,;:.u.~iI.t.~J <br />. '. :.-:-.-"". :.~ ,-,', ,~,=.. <br /> <br />This "Fotgut;"n. River" segment is rejuvenaled by the flaws <br />. from the Conehos Rivet from Mexico at Presidio/Ojinaga. Howevee, <br />the Conehos Rivet flows and othee cributaries from Mexioo, includ- <br />. ing those from whieh warm are allocated to .the United States, by <br />creaty, have been declining steadily fur the past decade, a period 01 <br />. , <br />drought in. this pan of the basin. Storage of United StaccS. and <br />. Mexican waters at _ the inremational Amistad and Falcon Dams has <br />declined. to reCord low levds, p;"mpring ecoecgency U.s.-MexicO <br />. water loan arrangements. <br />Discussions. are' under ~ to improve infoimarion exchange <br />chat paves the way for planning for river management during <br />drought periods. For the first time in recent memory, the mouth of <br />the Rio Grande hecune blocked wirh sediment during Pebtuaty <br />2001, completdy eliminating any outflO\"v"ofRio Grande Waters to <br />the Gulf of Mexi;"'. The sandbar was not cleared until July 200 1, <br /> <br />Jl <br /> <br />Fifth Report oflhe Good Ncighhor EnvirofilD!JJiaI Board <br />