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<br />.. <br /> <br />~ <br />~ <br /> <br />.' <br /> <br />avera~e .ann~al operation and maintenance costs, calculated on the <br />basis of September 1954 prices, are presented below: <br /> <br />Depreciation of eeneral property ..,..' ~17;448 <br />Persomlsl req~irements ...,. ,.".. ?O, 945 <br />Services and contract maintenance, .... 29,200 <br />f~terials t ~ ~ u , . 0 . . . ~ " ~ ~ . e ,~ L;800 <br />Contingencies, 10 percent . . . . . . . , o. ~39 <br />TOTAL ... 0 . . 0 coo . ft e' . 0 ~. ~79.~ <br /> <br />The total estimated average annual operation and n~inten- <br />ance cost converted to projected long-term pric~s is about ~52,800, <br /> <br />Summary of A~n~al C0Sts <br /> <br />The annual costs comprise the cost of amortizing the capital <br />investrr.ent, includi.ng i.nterest during conGt:~uction, over a 50-year <br />period with interest at 2,~} percent.. together with the annual oper- <br />ation and maintenance charges, These costs are as follows: <br /> <br />Amortization of capital costs. , . . . . . , ,$ 78,100 <br />Operatio~ and maintenance ~ $ 0 0 . ~ 0 = 0 ~ e 52,800 <br />TOTAL. 1/ . 0 .. . 0 tr . . f) " ~ . {J . ,~ . ~ ~ 0$130,900 <br /> <br />EFFECT OF PROPOSED PLAN <br /> <br />COITIE..~~~9.11~~er .~~ <br /> <br />Detailed studies were made of the river reach between <br />Artesia and the ~!GNi.llan j{e.,9r\' o).r in o:'der to evaluate the water <br />salvage effects of the plan" The studies included considerat:.on of <br />histo:>cic, pres~nt) and assumed future conditions in the reach and <br />involved the actions discussed below, <br /> <br />The relationships of inflows to outflows were used to <br />establish the regimen cf flows through the delta, Inflow~outflow <br />relationships ,rere developed by multiple and simple correlations <br />between the flow of the Pecos River near Artesia a~ the Pecos <br />River effective flow at Dam Site Noo 3, the latter being the recorded <br />flow at that site corrected for the change in storage in HcNi.llan <br />Reservoir, Dam Site No, 3, located between Mc~dllan Dam and the head- <br />wateru of Avalon Reservoir, was selected as the outflow station <br />becau3e it records all flows passing through McMillan ReserVOir, both <br />as releases and as leakage from the reservcir, the latter returning <br />to the river through ~ajor Johnson Springs, <br /> <br />In developing the relationships of the flows under historic <br />conditions at these two stations, the calendar years 1941 and 1942 had <br />to be omitted because of lack of records at Dam Site No, 3. Two <br />multiple correlations, adequate for the studies, were established for <br />the period 1938 through 1953, excluding 1941 and 1942, These took <br />into consideration the flow at Artesia9 the antecedent flow at Artesia <br />the maiwitude and volume of the rise and fall of the flo~l at Artesia, <br /> <br />'( <br />