Laserfiche WebLink
<br />refL-rreu to in the above pn1Visluns l'f the Compact. The Corp:.- <br />of Engineers has continued to oper;uc John Martin Reservo][ <br />in accordance with the provlsion..- of the Compact. The UniteJ <br />St<1.tl: Geological Survey has also continued with the operatirJ!~ <br />nt tht.: Comr;lct gaging stations and the compilation of hydro <br />logIC data presented in this report and utilized in the admini::,' <br />tration of the CompC1.ct. To ilssist that agency in ddraying th:: <br />costs uf operating thl: rC1.clio stage reporting gages and perform' <br />ing other nnn-routmc work required for the administration of <br />the Comr;\ct, the Administration enkrcd into cooperative agree- <br />ments \'vith the Geological Survey for the fiscal years cndinl! <br />June ~O, 1955, and June 30, 1956. Under the terms of these <br />agreements, $500 W;lS provided hy the Administration and a <br />substantially equal ;\mount by th(' Geological Survey fnr th,~ <br />ahove dcscnhed purposes, in each of these fiscal years. <br /> <br />7. "Vate,- Supply, Reservoi,- Ope,-atio1l and Hydrologic Data <br />Continuing for the third year in su::cession, John M;\rtin Reservoil <br />again was empty at the beginning of the Compact year on November 1. <br />1954. Passage of river nO\\' up tn 100 cfs. continued untIl the storagr <br />l)f winter flows \ViiS starteu at 9:20 A.M nn December 29,1954; winter <br />storage continued tu the opening of the irrigation SCilson on April 1. <br />1955, at whlCh time the reservoir contained 6,03~ acre-feet uf water. <br />The sharp dO\l,mw:lrJ trend in winter water inflow of the past few year.:. <br />prevailed during this penud, receding to 40~{, of the extreme low which <br />had been experienced in the Slime ~cason last year. The accumuliltion (If <br />water in storage continued thwugh April 1 n, 195.:;' re;"\ching a total <br />volume of 6,178 acre-feet before releascs were commenced. Based upon <br />the concurrent demands of both States, rdeClses of water from the Reser' <br />voir were made beginning:lt R:OO A.M. on April 11. lQ55. and (OW <br />tinued until the Reservoir was empty at noon on April I? 1955. <br />During the week at M;lY 17 to 2~. 1955, heavy precipitatirm oc. <br />curred over the pLtins and 10\lh~r mountains ot eastern Colorado <1.nd <br />northeastern New MeXICO and nw'r the plains of western Kansas. In <br />the Arkansas River n.lsin ;lbove John Martin Reservoir total rainfall <br />during the storm period ranged from '2 inches at the dam to 13.59 inche:: <br />near the headwaters of the Purgatoire River. A large part of the area <br />west of .1. meridian through Pueblo receIved in excess of 5 inches of r,lin. <br />The resulting runoff produced peak discharges at Las Animas of 45,000 <br />cubic feet p('r second on the Arbnsas River ;md 70,000 cuhic feet per <br />second on the Purgatoire River. The gates <It John Mutin Reservoir <br />\,,-,ere closed ;It 7;00 A.M. on ~1ay 19, 1955, and the total volume of <br />the upstream nood, amounting to 260.000 :lcre-fect, was collected in <br />storage. <br />The sturm rainfall in that p;trt of the basin between John Martin <br />Dilnl <Iod the StJ.tcJine was generally less them 2 inches north of the river <br />;tnd rangcd from 3 to 5 inches un tnbutaries south of the river. Alon~ <br />the valley from the Statcline to Garden City there was generally <lbou"t <br />3Y2. inches of rain. <br /> <br />8 <br /> <br />U_I <br />