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2 City, Iowa, to t.he mouth," It. should alsl) be noteu t.hat. a. significant. Rmo~nt of reser\"oir storage cltpncity hns been constructed to meet the multIpurpose needs of the Missouri River: Basin. The Nu.rr?ws unit was jnc~uded in and D.lIthor:zed with the general ~oruprehen:ilve plan for tbe !vfiS5oUri River Bnsin project R.S presented In Senate Document 191 (78th Congres~). A.s explained in our pro- p<?sed report, reauthorization of the unit. is required in accordance "oth l.be Act of August 14, J 964, hs development as proposed in ollr report repreS~llt8 110 water use additional t.C) that plll.n. Therefore, recommendatIOns of the SLute of Iowa for pro'\isions in the authorizing document hnd legislation do not appear to be necessary or appropnfLte. . The S~8te of !,Tebrnska recognizes t.bat lJ1f~ Nnrrows unit would be :m compliance WIth the South PlaLte River COIllpnct beLween Colorado and Nebraska, and it accepts tbe validity of tbat compact, Tbe State expresses concern that, even though in compliance with the compact, development of the unit would result in a reduetjon in river f1o..... at the Colorado-Nebraskl\ State line which would deplete \I,..ater supplies olth~ Plat.le VaUey and Cenlral Nebraska Public Power and Irrigation Dlstncts and thereby impair tbe ability of the districts to repay their Federal loans, We will be mindful of these conditions during post- authonzahon studies und will, to the extent consistent \\ith the pur- poses of the unit, seek to minimize the adverse effect9. The Cbief of Engineers, Department of the Army, advises that the proposed p!lln does not conflict with existing or authorized projects or pl.ans of the .Corps of Engineers. He also advises that a subsequent detalled analySIS of the flood damage reduction wHich CQuld be realized rr ~ OperB.tlOll or Narrows Reservoir resulted ill u slightly l{)wer estImaCe ($940,000) t,han the pre,'iously furnished estimate ($901,000) used In onr proposed report find that substitution of the lower ti~urf': would huve no significant effect all t.he feusibility or the unit. . Comments received from the other States and Federa.l agencies eIther are {nvo~able or offer no objection to the proposed development.. After full cOllsHJeration of the views and recommendations re(~ehTed, we conclude that revision of (lllr pf()po~~d report, except for adoption or ~he basic plan of development., is not necessary as a result of the reVlews. Sub~equeJlt to f"ompletion of our proposed report the Federal Water PolllltlOn Control AdministratioTl gA.ve further considerh.tion to the water quality control effects of the unit. It advises us that no dfJwn- st.ream water quality effects are expected which may interrere with present or proposed be.nefidRlllses in the South Platte River. Because of potentinl \\"uter qUA-liLy problems, t.hat agency may recommend addition!ll studies after the unit is plllced in operation. _ I recC?mmelld that you approve and adopt this report, which adopts I :tJhe bn.SlC plan of de\'elopment, as your report 011 the Narro\\"s unit, ...........~1issouri ~iver Bu..c;in project, Colorado, find tlu!.t YOII transmit it, i. ..together WIth the A.ttnched documents, t.Q the PresH.lent und sllbse- (.'I~uently to the Congress, uS provided by tbe Reclamation Project. Act or J 939, Respectfully, FLOYD E. DOMINY, Oammi.ssioner. Approved and adopted February 8, J 968, STE\VART L. UDALL! Secretary oj the I ntenor, V.S DEPART.UENT OF TH.E L"lTERIOR, BUREAU OF RECLAMATION. Washington, D,C" September le,1967, THE SECRETAR:r OF THE INTEHIOR. SIR: This is my proposed report on tbe N f\rrows Unit, South Platte Division ,Mis90Uri River Huslll project, Colorado. It is based upon and includes the attacbed report prepared by tbe Region.u Director, dated Auglls~ 1906, as r,,'ised January 1967, l1'bicb sets ford, tbe proposed plun of development and its engineering feasibility and eco- nomic justification. That plan is sumnuuized herein us well as an olternative plan based upon our subsequent. c:onsideration oC stream- flows proposed for water quality conl.rol. Appended to the Region.al Director's. report are report,s by the Corpg of Engineers, N h.tlonal Park SerVIce, Blirea" of Sport Fisberies and Wildlife, and the Public Healib Service, The proposed Narrows unit. would be a multiple-rurpose develop- ment, serVing the functions or irrigation, flood contro , recreation, and fisb and wildlife enhancement, The unit was authorized for develop- ment by the Flood Control Acts 01 1944 (58 Stat. 887), 1946 (60 S~at, 641), and ]950 (64 St,at. 170), The gelleral comprebensive plRn ror the Missouri River BBEi.n project "'as presented in Senate Docu- ment 191 and House Document 475, as revised and coordinated by Senate Document 247 (78th Congreso), Tbe att.ched report has been prepared under tLe general But.honty or tbe Federal ReclamatIOn L~ws (act 01 June 17, 1902,32 Siat. 388, .nd acts .mendatory tbereof or supplementary thereto) and pursllant to the I?rovisions of Public LfLW 442, 88th Congress, which requires reil.lIthO!1zntioll by the Con- gress or any units of tue .J\1issouri River Basin project on which con- struction was not underway us or August 14, 1964. Authority to engll.ge in the feasibility investigation of the unit was provided by t,he act of September 7, 1966 (80 Stat, 707), During tl1e severe drought oC tbe 1930's, water sborLnges became widespread and ground water development ill the South Platte River Basin expanded rapidly, IL became apparent tbat additional surface wltte.r for inigation would be required. The only practica.ble means of resolving the situatioll \\'as by t-rafiSlllouutain uuportution or wat.er from ~ources on tbe \\'estern ~Iope of the Continental Divide. Studies of ways to alle....iate tbe situation were ma.de which led to the subse- quent. a.uthorization oC the Colorado-Big Thompson project by the Interior Department Appropriation Act of 1938 (50 StRt. 595) lor construct.lOn or tbe project in accordance with the plEl.n described in Senate Docmuent 80 of tbe 75tb Congress, The Northern Colorado Water Conservancy District was rormally orgrmized in 1937 and entered into 8 contract with the United States on July 5, 1938, for the repo.yment of project construction costs. The proposed Narrows unit is superimposed on lands included in the Nortbem Colorado Water ConservaTlcy Distric~ in the cenLral and lower Soutb Platte Basill, Colorado-Big Thompson project im- (3)