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.,. . . - 4 - state li1fJ !;hOsed, i t ~s believed that, even t hough all such known upstream sites were utilized, it ~ould make little difference in the water available to the Narrows Reservoir. The unused flood water crossing the state line is very erratic in time of occur~ence; large quantities ~ill be in the stream for one year or even for a two-or-three-year period, and then there will intervene a long period of years such as 1931-1940 '.'!hen very lit-cle unused flood water will cross the state line. The floods are also err~tic in place of occurrence. SometL~es they are general throuGhout the.basin, but more often they oCclrr at times on one tributary and at other times Qn other tributaries. Therefore a la~ge capacity reservoir located on the main stem below the places of origin of the flQods is re- quired to equate the nO\'r unused fl.Jod flows over a period of year:. It is doubtful 1'rhether t:le total capacity of knCl";m upstream reser70irs ,.;auld res'llt in any sicnificant e,!u&tion 0i' such flood flO1'Ts. The following is a d~scuss~on of the benefit3 clai;.18d f:;c' the operation of the lIarrows Reservoir. Its o]:eration will have no npDreciable effect in re<iuc::~C; the staGes Qf the Platte a:1d the Uissouri Rivers during flood periods. Its operation wiE hc.ve a m~t.2ri3.l flood control benefit fQr the improve- ments lying in the flood pl'lin of Colorado in the South Platte Valley below the reservoir. HO','rever, if its beneficiaries living below the NarroVTs Reservoir had to p~y for tta flood control benefits that would accrue to them from the operation of the reoervoir, they probably would not consider such a development. The reservoir Hill m"ke useable at least enough y'ater to irrigate 30,000 acres of new land and it mll provide a supplement'll suppl;;- for a substantial area of land lying belovr it in Colorado. Some of the lands above the reservoir could receive a small benefit by exchange. It is not believed that this reservQir or any other reservoir is essential to enable ColQrado to cow,'}y ','ri th the terms of the Colorado River Compact by preventing Colorado River water 1rom flmving out of Colorado into a state which is not a Colorado River Basin State. I have heretoforE said that there is no imnediate necessity for a reservoir for that purpose because so long as several million acre-feet of regulated water is passing throur,ll porrer l;heels in the LOl:er Colorado River Basin to generat.e Jdlo'!Tatt hours Clnd flO1'Qng 00 l.iexico, some of vrhich is used by Llexico and mClc,l of which flQWS to the Gulf of Lorrer California ur.used, there can be no complaint on the part of the I.ower Basin if any of the Upper Basin state3 exports ',"ater from the basin ar::d I'ermits it to flO\~ into another state e'len though the water is utilized only ~'or tje Generation of hydro-electic energy. This is because of the provision of subparagraph (e) of Article :LII of the Colorado River Compact which reads: